General Science and Ability MCQs

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CSS Practice MCQs

General Science & Ability MCQs

1 / 313

The two planets between the Earth and the Sun are :

a) Mars and Jupiter

b) Mercury and Venus

c) Mercury and Saturn

d) Venus and Jupiter

2 / 313

The nuclei of most of the atoms contain nearly _____ % of the mass of atoms.

a) 50

b) 80

c) 90

d) 99.9

3 / 313

Who suggested most of the mass of atom is located in nucleus ?

a) Bohr

b) Thomson

c) Rutherford

d) Avogadro

4 / 313

The most abundant element in the earth's crust is :

a) Oxygen

b) Aluminum

c) Iron

d) Silicon

5 / 313

Which of the following is an unsaturated fat ?

a) Cheese

b) Butter

c) Vegetable Oil

d) None of these

6 / 313

Constellations referred to as zodiac, are :

a) Imaginary regions that encompass the path of the planets

b) Signs of Roman gods

c) A group of stars

d) None of these

7 / 313

Which of the following is a disaccharide composed of two glucose molecules ?

a) Sucrose

b) Galactose

c) Maltose

d) Lactose

8 / 313

Hailey's comet is visible after every ______ years :

a) 84

b) 76

c) 1000

d) 365

9 / 313

Lines joining places of equal temperature are called :

a) Isotherms

b) Isohyets

c) Isomers

d) Isobars

10 / 313

_______ is the primary consideration in designing knowledge-based AI systems.

a) Analogy

b) Efficacy

c) Efficiency

d) None of these

11 / 313

Chadwick got the Noble Prize for the discovery of :

a) Protons

b) Electrons

c) Neutrons

d) Mesons

12 / 313

Collection of water droplets which are suspended in the air are called :

a) Clouds

b) Wind

c) Gases

d) Sleet

13 / 313

Which of the following is applicable to the planet Venus ?

a) Smallest

b) Brightest

c) Most dense

d) Largest

14 / 313

Which of the following is used for measuring distance:

a) Coulomb

b) Light Year

c) Farad

d) Curie

15 / 313

Bronze medal is made up of metals :

a) Copper, Nickel

b) Copper, Tin

c) Copper, Silver

d) Copper, Zinc

16 / 313

Enzymes in human bodies are :

a) Protein

b) Virus

c) Bacteria

d) None of these

17 / 313

What are the total number of combinations of 9 things taken 3 at a time?

a) 18

b) 27

c) 48

d) 84

18 / 313

Impurities like boron, aluminum, gallium or indium are added to intrinsic semiconductor to form :

a) N-type doped semiconductor

b) P-type doped semiconductor

c) A junction diode

d) All of these

19 / 313

The phases of the moon are partially the result of the :

a) Changes in the shape of the moon

b) Revolution of the moon around earth

c) Variation in the moon's gravitation

d) Variation in the speed of rotation of the moon

20 / 313

Proteins are made up of :

a) Polynucleotide

b) Polypeptide

c) Oxyacetylene

d) None of these

21 / 313

A pencil dipped in water appears bent due to:

a) Reflection

b) Diffraction

c) Refraction

d) None of these

22 / 313

Which of the following does not belong to halogen family ?

a) Chlorine

b) Florine

c) Bromine

d) Morphine

23 / 313

Isotopes of an element have the same number of :

a) Neutrons

b) Protons

c) Protons + Neutrons

d) Electrons

24 / 313

What is the size of MAC Address ?

a) 16 bits

b) 32 bits

c) 48 bits

d) 64 bits

25 / 313

Which of the following is a major source of thermal pollution in water bodies ?

a) Sewage Treatment Plant

b) Solid waste disposal sites

c) Thermal power plant

d) All of these

26 / 313

The international Date Line passes through :

a) 180 degree longitude

b) 180 degree to equator

c) 180 degree east or west meridian

d) Exactly 0 degree meridian

27 / 313

The polluting strength of sewage is usually characterized by its :

a) BOD

b) Nitrogen content

c) Ozone content

d) Eutrophication

28 / 313

H+ is yielded by :

a) Acids

b) Alkalis

c) Both of these

d) None of these

29 / 313

Carbohydrate content in potato per 100g is :

a) 18g

b) 20.13g

c) 25g

d) 31g

30 / 313

The top atmosphere of Earth directly reflects back into space nearly what part of the total amount of sun's energy coming to it ?

a) 10 %

b) 20 %

c) 30 %

d) 50 %

31 / 313

Fish die outside the water due to:

a) Carbon monooxide

b) Oxygen

c) Sunlight

d) Non-absorption of oxygen

32 / 313

Atomic weight of uranium 92U238 is :

a) 337

b) 238

c) 226

d) 92

33 / 313

Which can be considered as the unit of distance ?

a) Foot Path

b) Heavy Year

c) Light Year

d) None of these

34 / 313

The protein molecule is made of:

a) Alkaloids

b) Nucleosides

c) Short range chain of amino acids

d) Long range chain of amino acids

35 / 313

The supersonic jets cause pollution by the thinning of :

a) Carbon dioxide layer

b) Sulfur dioxide layer

c) Ozone layer

d) Oxygen layer

36 / 313

Slate, diamond and marble are _______ rocks.

a) Igneous

b) Sedimentary

c) Metamorphic

d) None of these

37 / 313

A day is added when a man crosses the International Date Line from :

a) North to South

b) East to West

c) West to East

d) South to West

38 / 313

A cyclone is formed when:

a) The warm air rises upward over the ocean

b) The moist air rises upward over the ocean

c) The moist air pressed downward over the ocean

d) The warm, moist air rises upward over the ocean

39 / 313

Stone used in whitewash :

a) Claystone

b) Stonelime

c) Sandstone

d) None of these

40 / 313

Which of the following contains a greater number of carbon atoms in one mole of each compound?

a) Chloroform

b) Methanol

c) Water

d) Ethanol

41 / 313

The mass of heaviest Neutron star as compared to Sun is :

a) Equal

b) 2.35 times greater

c) 2.35 times smaller

d) Varies depending upon age of neutron star

42 / 313

Savannah Grasslands with tall trees are mainly found in :

a) South America

b) Africa

c) Central America

d) Australia

43 / 313

How many electrons are required in the outermost shell of an element for it to be stable ?

a) 4

b) 6

c) 8

d) 2

44 / 313

Atmospheric pollution may be caused by :

a) Forest Fire

b) Organic Decay

c) Automobile exhausts

d) All of these

45 / 313

Complex carbohydrates :

a) Include glycogen, cellulose and starch

b) Consist of many glucose molecules bound together in long chains

c) Are polysaccharides

d) All of these

46 / 313

One of the main function of the earth's ozone layer is to :

a) Prevent global warming

b) Filter out ultraviolet rays

c) Absorb pollution

d) All of above

47 / 313

Which part of a body will be affected mainly by Fluoride Pollution ?

a) Brain

b) Liver

c) Teeth

d) None of these

48 / 313

The sun arises on the north pole on the 21st March and this pole remains in light till :

a) 23rd Sep

b) 21st Oct

c) 22nd June

d) 22nd Dec

49 / 313

If the radius of a circle is increased three times, then its area is increased:

a) Three times

b) Six times

c) Nine times

d) None of these

50 / 313

Which of the following is a secondary pollutant ?

a) Carbon dioxide

b) Carbon monoxide

c) Ozone

d) Sulphur Dioxide

51 / 313

Which of the following is not a part of quantities used to discuss computer memory ?

a) Bite

b) Bit

c) Byte

d) None of these

52 / 313

Control rods used in nuclear reactor are made of :

a) Cadmium

b) Copper

c) Graphite

d) None of these

53 / 313

The chemical formula for Alum is:

a) KAl(SO₄)₂·12H₂O

b) KSi(SO₄)₂·12H₂O

c) KAl(SO₄)₂·8H₂O

d) None of these

54 / 313

Mango variety having strong flavor is :

a) Sindhri

b) Chaunsa

c) Langra

d) Fazli

55 / 313

How many bones are there in human body ?

a) 204

b) 205

c) 206

d) 208

56 / 313

All of these carbohydrates come from plants EXCEPT :

a) Cellulose

b) Fructose

c) Lactose

d) Maltose

57 / 313

How many calories should you eat per day to lose weight ?

a) 1000

b) 1500

c) 2000

d) 2500

58 / 313

Astronomical unit "Light Year" is used for measuring :

a) Distance

b) Time

c) Time period

d) Light intensity

59 / 313

Which of the following is not a marine pollutant ?

a) Oil

b) Plastics

c) Dissolved oxygen

d) All of these

60 / 313

The shape of earth is :

a) Elliptical

b) Oval

c) Spherical

d) Oblate Spheroid

61 / 313

Earthquakes are caused by :

a) Tectonism

b) Denudation

c) Earth's revolution

d) Earth's rotation

62 / 313

Atmospheric pressure exerted on earth is due to :

a) Rotation of earth

b) Revolution of earth

c) Gravitational pull

d) Uneven heating of earth

63 / 313

One degree of longitude on equator is equal to a distance of:

a) 49 miles

b) 69 miles

c) 39 miles

d) 60 miles

64 / 313

In which part of the atmosphere commercial aircrafts usually fly ?

a) Thermosphere

b) Stratosphere

c) Troposphere

d) Mesosphere

65 / 313

The loudness of sound depends on its :

a) Wavelength

b) Frequency

c) Amplitude

d) All of these

66 / 313

Sonar is used to measure :

a) The speed of sound

b) Air pressure

c) Temperature

d) Ocean depth

67 / 313

The vitamin essential for blood clotting is :

a) A

b) B

c) C

d) K

68 / 313

Which of the following does not cause soil erosion ?

a) Wind

b) Overgrazing

c) Sun

d) Water

69 / 313

Among the following, the secondary pollutant is :

a) Sulphur peroxide

b) Sulphur dioxide

c) Carbon monoxide

d) Ozone

70 / 313

Deficiency of vitamin C causes :

a) Night-blindness

b) Beri-Beri

c) Scurvy

d) Rickets

71 / 313

Which of the following devices is suitable for removing finest dust from the air ?

a) Cyclone Separator

b) Electrostatic precipitator

c) Baghouse filter

d) Wet scrubber

72 / 313

Which of the following cannot be considered as renewable source of energy ?

a) Petroleum

b) Wind

c) Solar

d) None of these

73 / 313

The largest moon in our solar system is :

a) Ganymede

b) Titan

c) Callisto

d) Miranda

74 / 313

Plotting of the vibrations caused by an earthquake on paper is called :

a) Photograph

b) Earthograph

c) Seismograph

d) None of these

75 / 313

It takes Ali 30 minutes to mark a paper. Aslam only needs 25 minutes to mark a paper. If they both start marking paper at 11:00 AM, at what time they will finish marking at the same time ?

a) 12:30 PM

b) 12:45 PM

c) 1:30 PM

d) 12:25 PM

76 / 313

In water pollution, industries are said to be the :

a) Line sources

b) Point sources

c) Area sources

d) None of these

77 / 313

Gas used for artificial ripening of fruits is :

a) Ethylene

b) Ethane

c) Carbon dioxide

d) Acetylene

78 / 313

Which of the following is not an electromagnetic wave ?

a) Sound waves

b) Radio waves

c) Light waves

d) None of these

79 / 313

The layer of atmosphere close to Earth's surface is called :

a) Exosphere

b) Ionosphere

c) Stratosphere

d) Troposphere

80 / 313

Electromagnetic waves, which are used for satellite communication, are:

a) Infrared Waves

b) Radio Waves and Microwaves

c) Ultraviolet

d) Gamma Rays

81 / 313

Which of the following is not a sedimentary rock ?

a) Limestone

b) Sandstone

c) Granite

d) None of these

82 / 313

Which of the following is the fastest rotating planet ?

a) Mercury

b) Mars

c) Jupiter

d) Venus

83 / 313

Which of the following are likely to be present in photochemical smog ?

a) Sulphur dioxide

b) Photochemical oxidants

c) Volatile organic compounds

d) All of these

84 / 313

Which of the following is not a type of hepatitis?

a) Hepatitis A

b) Hepatitis B

c) Hepatitis C

d) Hepatitis F

85 / 313

The ozone layer protects the earth from _______ sent by the Sun.

a) Ultraviolet rays

b) Infrared rays

c) Gamma rays

d) Radioactive rays

86 / 313

The use of antibiotic is a very effective way of killing disease causing bacteria. Sometimes people don't finish all of their pills. This can result in :

a) Some bacteria left unkilled

b) Production of more bacteria

c) Bacteria becoming sensitive to antibiotics

d) Bacteria becoming resistant to antibiotics

87 / 313

Human cannot survive without taking minimum amount of :

a) Proteins

b) Carbohydrates

c) Fats

d) Minerals

88 / 313

Layer of atmosphere in which Ozone layer lies is :

a) Exosphere

b) Mesosphere

c) Troposphere

d) Stratosphere

89 / 313

Which of the following vitamins is water soluble ?

a) A

b) B

c) E

d) K

90 / 313

Newspaper can be recycled how many times ?

a) 1 to 2

b) 5 to 7

c) 10 to 12

d) None of these

91 / 313

Which of the following is not associated with earth's environment ?

a) Lithosphere

b) Thermosphere

c) Stratosphere

d) Troposphere

92 / 313

For long-term storage, glucose is converted into _____ , while for short-term storage, glucose is converted into ______ :

a) Fat, Glycogen

b) Glycogen, Ketone bodies

c) Glycogen, Protein

d) Pyruvic acid, Fat

93 / 313

The formula for the total surface area of cone is:

a) 2πr² + πr

b) 2πr² + πrh

c) πr² + πrh

d) 1/3πr²h

94 / 313

If Z represents the atomic number and A represents the mass number, then the number of electrons is equal to :

a) A + Z

b) A / Z

c) Z - A

d) Z

95 / 313

Which of the following African country located on the Equator ?

a) Egypt

b) Mali

c) Kenya

d) South Africa

96 / 313

Rainbow formation is due to :

a) Absorption of sunlight by the water droplets

b) Diffusion of sunlight through the water droplets

c) Ionization of water droplets

d) Refraction and reflection of sunlight by water droplets

97 / 313

Radio waves by 'Radio Broadcasting' is reflected by :

a) Ionosphere

b) Stratosphere

c) Mesosphere

d) None of these

98 / 313

Which vitamin is known as Ascorbic Acid ?

a) A

b) B

c) K

d) C

99 / 313

The chemical name of laughing gas is :

a) Nitrous Oxide

b) Nitric Oxide

c) Nitrogen Dioxide

d) Nitrogen Peroxide

100 / 313

Which of the following is an igneous rock ?

a) Shale

b) Quartzite

c) Marble

d) Granite

101 / 313

Pollutants resulting from human activities are mainly discharged in :

a) Overpopulated cities

b) Industrial centers

c) Rural areas

d) Both a). and b).

102 / 313

Antibiotics are used to fight against :

a) Pathogens

b) Virus

c) Bacteria

d) Proteins

103 / 313

The gravitational pull at lunar surface is _____ of Earth.

a) One-third

b) One-forth

c) One-fifth

d) One-sixth

104 / 313

All of these foods contain cholesterol EXCEPT :

a) Coconut Oil

b) Butter

c) Cheese

d) Eggs

105 / 313

How can we symbolically write the Ozone Gas ?

a) O2

b) O3

c) CO2

d) None of these

106 / 313

Which of the planet is popularly known as Morning Star ?

a) Saturn

b) Jupiter

c) Mars

d) Venus

107 / 313

The nucleus of a hydrogen atom consists of :

a) one proton + one neutron

b) one proton + two neutrons

c) one proton only

d) All of these

108 / 313

Which metal is most abundantly found in the earth's crust ?

a) Aluminum

b) Zinc

c) Iron

d) Copper

109 / 313

The material that is used to make LEDs is:

a) Silicon

b) Aluminum

c) Gallium arsenide

d) Copper oxide

110 / 313

Which of the following is the hardest substance ?

a) Copper

b) Diamond

c) Iron

d) Silicon

111 / 313

Noise is :

a) Loud sound

b) Sound of high frequency

c) Unwanted sound

d) Constant sound

112 / 313

Wind blowing in a spiral form around a region of low atmospheric pressure is a :

a) Hurricane

b) Cyclone

c) Anticyclone

d) Tornado

113 / 313

Blood clotting happens in which part of the human body ?

a) Veins

b) Heart

c) Brain

d) within blood vessels

114 / 313

Blood contains :

a) Red blood cells

b) White blood cells

c) Platelets

d) All of these

115 / 313

The ozone layer is present in which atmospheric layer ?

a) Exosphere

b) Mesosphere

c) Stratosphere

d) Ionosphere

116 / 313

Prevailing winds affect a region's climate by :

a) Creating desert areas

b) Causing more precipitation on one side of mountain

c) Affecting how much precipitation it receives

d) Controlling the amount of solar energy it receives

117 / 313

Of the following diseases, which one is caused by Aedes aegypti ?

a) Scurvy

b) Dengue

c) Pneumonia

d) Asthma

118 / 313

What is the temperature at the center of the Sun ?

a) 6 million C

b) 10 million C

c) 15 million C

d) 20 million C

119 / 313

The richest source of Vitamin A is :

a) Orange

b) Apple

c) Eggs

d) Liver

120 / 313

Basalt rock is an example of :

a) Metamorphic

b) Volcanic

c) Intrusive rock

d) Sedimentary

121 / 313

Lens used to correct short-sightedness (myopia) :

a) Convex

b) Concave

c) Both

d) None

122 / 313

Which cell organelles is called the powerhouse of the cell ?

a) Endoplasmic reticulum

b) Mitochondria

c) Vacuoles

d) Lysosomes

123 / 313

The number of electrons in the outermost shell in the atom of an inert element is :

a) 0

b) 1

c) 2

d) 8

124 / 313

The Earth completes on rotation on its axis in :

a) 23h 30m

b) 23h 56m 4.9s

c) 24h

d) 23h 10m 2s

125 / 313

The nearest regular galaxy to our Milky Way is :

a) NGC 185

b) Small Magellanic

c) Magellanic Cloud

d) Andromeda

126 / 313

The brain relies almost entirely on _______ for energy production.

a) Insulin

b) Glucose

c) Protein

d) Fatty acids

127 / 313

Which is the closet planet to the Earth ?

a) Mars

b) Venus

c) Mercury

d) Jupiter

128 / 313

WHO permitted concentration of arsenic in drinking water _______ microgram/liter.

a) 1 to 2

b) 10

c) 12

d) 200

129 / 313

The unit used to measure the distance between starts is :

a) Galactic unit

b) Light year

c) Cosmic kilometer

d) Stellar mile

130 / 313

Fish, safflower oil, sunflower oil and corn oil are sources of :

a) Monounsaturated fat

b) Polyunsaturated fat

c) Saturated fat

d) Steroids

131 / 313

The nucleus of an atom consists of :

a) Protons + electrons

b) Only protons

c) Protons + neutrons + electrons

d) Protons and neutrons

132 / 313

Phosphorous helps plant growth of :

a) Leaves

b) Seeds

c) Root

d) None of these

133 / 313

Catalyst to convert oil into ghee :

a) Nickel

b) Aluminium isopropoxide

c) Phosphonium borate

d) None of these

134 / 313

Two or more atoms combine to form :

a) A cation

b) An anion

c) A molecule

d) An ion

135 / 313

Which of the following is/are the main agent of soil erosion ?

a) Wind and water

b) Rocks

c) Sand

d) None of these

136 / 313

Pampas are vast grassy plains of :

a) South America

b) North America

c) Africa

d) Eurasia

137 / 313

Which of the following spacecraft enabled man to step on the moon first ?

a) Sputnik-l

b) Luna-ll

c) Vostok-l

d) Apollo-XI

138 / 313

Which of the following vitamins cannot be stored in the liver ?

a) Vitamin A

b) Vitamin C

c) Vitamin D

d) Vitamin K

139 / 313

Carbon monoxide is a pollutant because :

a) It reacts with oxygen

b) It inhibits glycolysis

c) Makes nervous system inactive

d) Reacts with hemoglobin

140 / 313

The most abundant element in the earth's atmosphere is :

a) Argon

b) Nitrogen

c) Oxygen

d) Krypton

141 / 313

In presence of H₂O₂ (Hydrogen Peroxide), more acidic is:

a) Vinegar (acetic acid)

b) Lemon juice (citric acid)

c) Orange juice (ascorbic acid)

d) Water

142 / 313

The Gutenberg discontinuity is between :

a) The crust and the mantle

b) The upper and lower mantles

c) The outer core and the lower mantle

d) The inner and outer cores

143 / 313

Radar receives waves called :

a) Electromagnetic waves

b) Mechanical waves

c) Radio waves

d) None of these

144 / 313

Deficiency of iron in human diet causes :

a) Hepatitis

b) Malaria

c) Anemia

d) None of these

145 / 313

Typical modern municipal landfills contain which of the following ?

a) Monitoring wells

b) Impermeable barriers

c) Methane retrieval systems

d) All of these

146 / 313

What is the mass of the Sun ?

a) 1.5 x 10^30 kg

b) 1.98 x 10^30 kg

c) 4.5 x 10^30 kg

d) 8 x 10^30 kg

147 / 313

The minimum amount of vitamin stored in the human body is of:

a) Vitamin D

b) Vitamin C

c) Vitamin E

d) Vitamin A

148 / 313

In a certain code language COMPUTER is written as RFUVQNPC. How will MEDICINE be written in code language ?

a) MFEDJJOE

b) EOJDEJFM

c) MFEJDJOE

d) EOJDJEFM

149 / 313

Which material accounts for the greatest percentage of the weight of solid waste ?

a) Food waste

b) Plastic

c) Paper

d) Yard waste

150 / 313

Monochromatic means:

a) Having multiple colors

b) Transparent to light

c) Absorbing all colors of light

d) Emitting only one specific color

151 / 313

Earth's crust have the abundant reserves of :

a) Iron, Silicon and Oxygen

b) Silicon, Nitrogen and Aluminum

c) Silicon, Oxygen and Aluminum

d) Iron, Silicon and Nitrogen

152 / 313

Ionic bond between two atoms is :

a) Complete transfer of valence electron

b) Half transfer of valence electron

c) Complete transfer of valence electron and proton

d) None of these

153 / 313

The name of the disease called Lockjaw is :

a) Arthritis

b) Hypetropia

c) Tetanus

d) None of these

154 / 313

The bond formed by transfer of electrons from one atom to another is :

a) Ionic

b) Covalent

c) Metallic

d) Either a) or b)

155 / 313

Richter scale is used to register the intensity of :

a) Ocean currents

b) Earthquakes

c) Rotation of the earth

d) Revolution of the earth

156 / 313

Bauxite is an important ore of :

a) Aluminum

b) Zinc

c) Copper

d) Mica

157 / 313

Which of the following does not vary predictably with the depth of aquatic environment ?

a) Salinity

b) Temperature

c) Penetration by sunlight

d) None of these

158 / 313

In animals, the principal role of vitamin E is :

a) Antioxidant

b) Reproduction

c) Digestion

d) Transpiration

159 / 313

If Z represents the atomic number and A represents the mass number, then the number of neutrons is equal to :

a) A + Z

b) A - Z

c) Z - A

d) Z

160 / 313

Which of the following is likely characteristic of hazardous waste ?

a) Ignitability

b) Corrosivity

c) Reactivity

d) All of these

161 / 313

Which of the following planet has the smallest diameter ?

a) Mercury

b) Mars

c) Pluto

d) Venus

162 / 313

Which of the following is not a vitamin ?

a) Trypsin

b) Ascorbic Acid

c) Riboflavin

d) Niacin Amide

163 / 313

For a time difference of one hour the longitudinal distance is equal to _____ degrees :

a) 15

b) 30

c) 45

d) 60

164 / 313

Which of the following pair is correct ?

a) Marble : Metamorphic rock

b) Basalt : Intrusive igneous rock

c) Slate : Extrusive igneous rock

d) None of these

165 / 313

Earthquake is measured by the instrument:

a) Wave guide

b) Barometer

c) Seismometer

d) Hydrometer

166 / 313

The Pakistani population receives the largest dose of ionizing radiation from :

a) Natural resources

b) Fallout from nuclear weapons testing

c) Nuclear medicine

d) Nuclear power plants

167 / 313

Among the planets of the Solar system the position of the Earth from the Sun is :

a) 2nd

b) 3rd

c) 4th

d) 5th

168 / 313

The heavy water is:

a) Denoted by D₂O and contains simple hydrogen

b) Denoted by H₂O and contains deuterium

c) Denoted by D₂O and contains deuterium

d) Denoted by H₂O contains simple hydrogen

169 / 313

The sky is blue because of :

a) Rayleigh scattering

b) Reflection

c) Refraction

d) Absorption

170 / 313

The first astronaut to set foot on moon was :

a) Yuri Gagarin

b) Neil Armstrong

c) Alen Shepherd

d) Edwin Aldrin

171 / 313

The ocean cover approximately ______ of Earth's surface.

a) 50 %

b) 60 %

c) 70 %

d) 80 %

172 / 313

During combustion of petrol in car engine, energy is converted in :

a) Chemical

b) Mechanical

c) Electrical

d) None of these

173 / 313

Why red light is used in traffic signal for danger?

a) Due to short wavelength

b) Due to high frequency

c) Due to short wavelength and high frequency

d) Due to long wavelength and low frequency

174 / 313

Permanent hardness of water is caused due to presence of dissolved :

a) Calcium hydrogen carbonates

b) Magnesium hydrogen carbonates

c) Both A and B

d) Sulphate and chlorides of calcium or magnesium

175 / 313

The position of a planet when it is nearest to the Sun is :

a) Perihelion

b) Aphelion

c) Apogee

d) Perigee

176 / 313

The driving force for making a bond is to :

a) Make solid compounds

b) Make gaseous substances

c) Attain electron configuration of noble gases

d) Make different compounds

177 / 313

Proteins are made up of :

a) Polynucleotide

b) Polypeptide

c) Oxyacetylene

d) None of these

178 / 313

The branch of physics which deals with atomic nuclei is :

a) Nuclear physics

b) Atomic physics

c) Particle physics

d) Modern physics

179 / 313

At greatest risk for food-borne illness :

a) Infants and children

b) Pregnant women

c) Immuno-suppressed individuals

d) All of the above

180 / 313

Which of the following vitamins is associated with coagulation of blood ?

a) Vitamin A

b) Vitamin B

c) Vitamin E

d) Vitamin K

181 / 313

The lunar eclipse occurs when :

a) Moon is between the earth and the sun

b) Earth is between the sun and the moon

c) Sun is between the earth and the moon

d) Earth is at right angles to the direction of sun and the moon

182 / 313

Which of the following plants can be used as indicators SO air pollution ?

a) Epiphytic lichens

b) Ferns

c) Liverworts

d) Hornworts

183 / 313

What is the shape of the Earth's orbit around Sun ?

a) Circular

b) Hyperbolic

c) Ellipse

d) Parabolic

184 / 313

Who discovered neutrons ?

a) Rutherford

b) J. J. Thomson

c) Chadwick

d) Goldstein

185 / 313

The Earth is spheroid because of its :

a) Revolution around the sun

b) Gravitational force

c) Centrifugal force of rotation

d) Inclination on its own axis

186 / 313

Which is bigger - an astronomical unit (AU) or a light-year (LY) ?

a) An astronomical unit

b) A light year

c) Neither is a measure of distance

d) Both are about the same distance

187 / 313

Which of the following does not belong to the vitamin B complex group ?

a) Thiamine

b) Ascorbic Acid

c) Riboflavin

d) Folic Acid

188 / 313

An atom of an element with mass number 23 and atomic number 11 will have :

a) 11 neutrons, 12 protons, 11 electrons

b) 12 neutrons, 11 protons, 11 electrons

c) 11 neutrons, 11 protons, 12 electrons

d) 23 protons and 11 electrons

189 / 313

What is anthracite :

a) Carbon

b) Pure Carbon

c) Ammonia

d) None of these

190 / 313

Set of programs with full set of documentation is considered as :

a) Database package

b) File package

c) Software

d) Software packages

191 / 313

The tendency of an atom attain maximum of eight electrons in the valence shell is known as :

a) Triad rule

b) Octet rule

c) Quad rule

d) Duplet rule

192 / 313

The neutral atom's two isotopes differ in the number of :

a) Electron Shells

b) Protons

c) Valence Electrons

d) Neutrons

193 / 313

How is dengue fever transmitted ?

a) Bite of an infected mosquito

b) Bite of an infected male Aedes mosquito

c) Bite of an infected female Anopheles mosquito

d) Bite of an infected female Aedes mosquito

194 / 313

The distance between consecutive longitudes at the poles is :

a) Zero

b) 18 km

c) 25 km

d) 10 km

195 / 313

Which method may not be considered as food preservation method ?

a) Freezing

b) Irradiation

c) Sleeping

d) None of these

196 / 313

Smog is :

a) A natural phenomenon

b) A combination of smoke and fog

c) colorless

d) All of these

197 / 313

Atoms are composed of :

a) Electrons only

b) Protons only

c) Electrons and Protons

d) Electrons and Nuclei

198 / 313

Skeletal muscle cells derive most of their energy from :

a) Glucose

b) Triglycerides

c) Glycogen

d) Proteins

199 / 313

Covid-19 is caused by :

a) Bacteria

b) Virus

c) Injection

d) None of these

200 / 313

The following disease is water borne ?

a) Typhoid

b) Tuberculosis

c) Hepatitis B

d) Scurvy

201 / 313

Who was the first to measure earth's radius ?

a) Galileo

b) Copernicus

c) Ptolemy

d) Eratosthenes

202 / 313

The synoptic weather charts are used to:

a) Predict long-term climate patterns

b) Monitor ocean currents

c) Analyze short-term weather conditions

d) Study seismic activity

203 / 313

What does RNA stand for ?

a) Ribonucleic Acid

b) Russian National Assembly

c) Red Nitric Acid

d) None of these

204 / 313

In which atmosphere layer the temperature is about -90 degree centigrade :

a) Stratosphere

b) Mesosphere

c) Troposphere

d) Thermosphere

205 / 313

Monsoon is caused by :

a) Seasonal reversal of winds

b) Revolution of Earth

c) Movement of clouds

d) Rise in temperature

206 / 313

Combining of two non-metal atoms by sharing one or more pairs of electron is called :

a) Ionic bond

b) Covalent bond

c) Metal bond

d) None of these

207 / 313

The term nucleon is used to refer to :

a) An electron

b) A photon

c) A positron

d) Either a neutron or a proton

208 / 313

Atomic number is also called ?

a) Proton number

b) Electron number

c) Both a) and b)

d) None of these

209 / 313

Which of the following pair is incorrect ?

a) Atom : Smallest invisible part of element

b) Heterogenous : Mixture of two or more things

c) Molecule : Unit of a compound

d) Alloy : Mixture of two or more metals

210 / 313

In dementia, a person:

a) Loses weight

b) Loses thinking and writing

c) Loses thinking, remembering and reasoning

d) All of these

211 / 313

The position of earth in its orbit, when it is at its greatest distance from sun is called :

a) Aphelion

b) Perihelion

c) Perigee

d) Apogee

212 / 313

Barometer is used for measuring :

a) Temperature

b) Pressure

c) Humidity

d) None of these

213 / 313

"Black Holes" refers to :

a) Holes occurring in heavenly bodies

b) Bright spots on the sun

c) Collapsing objects of high density

d) None of these

214 / 313

How many bits are required to store hexadecimal word AF :

a) 2

b) 4

c) 8

d) 16

215 / 313

Which of the following is not a basic step in creating a worksheet :

a) Copy the worksheet

b) Save workbook

c) Modify the worksheets

d) None of these

216 / 313

Which of the following layers makes radio transmission possible ?

a) Troposphere

b) Ionosphere

c) Mesosphere

d) Stratosphere

217 / 313

Sulphuric acid was first prepared by :

a) Johann Glauber

b) Peregrine Philips

c) Jabar bin Hayan

d) None of these

218 / 313

Which one is not a planet ?

a) Earth

b) Venus

c) Moon

d) None of these

219 / 313

Mass of an electron is :

a) 9.11 x 10^-19 kg

b) 9.11 x 10^-31 kg

c) 1.6 x 10^-19 kg

d) 1.6 x 10^-31 kg

220 / 313

The atomic number of an atom is determined by number of :

a) Proton

b) Neutron

c) Electron

d) None of these

221 / 313

What is pre-released software's version ?

a) Raw

b) Alpha

c) Beta

d) Gamma

222 / 313

Greenhouse gases absorb the :

a) Infrared radiations

b) Ultraviolet radiations

c) Visible radiations

d) None of these

223 / 313

The number of amino acids that constitutes all proteins is about :

a) 10

b) 15

c) 20

d) 25

224 / 313

Which of the following device is suitable for the removal of gaseous pollutants ?

a) Cyclone Separator

b) Electrostatic precipitator

c) Baghouse filter

d) All of these

225 / 313

A balanced diet contains :

a) Animal protein

b) Macro and micro nutrients

c) All food nutrients necessary for growth and maintenance

d) Butter and ghee

226 / 313

In which direction does the Earth rotate on its axis ?

a) East to West

b) West to East

c) North to South

d) None of these

227 / 313

Enzymes are formed of :

a) Amino acids

b) Fats

c) Carbohydrates

d) Proteins

228 / 313

Which one is not a part of cell phone structure ?

a) LCD

b) Battery

c) Water

d) None of these

229 / 313

The type of "Rock" marble is:

a) Igneous

b) Sedimentary

c) Metamorphic

d) Volcanic

230 / 313

Carbon dioxide content in atmosphere is :

a) 93 %

b) 0.5 %

c) 0.03 %

d) 0.001 %

231 / 313

Which of the following is a "great circle" ?

a) Arctic circle

b) Equator

c) Tropic of cancer

d) Tropic of Capricorn

232 / 313

Example of primary pollutant is :

a) Sulphur dioxide

b) Nitrogen dioxide

c) Carbon monoxide

d) All of these

233 / 313

Equinox means :

a) Days are longer than nights

b) Nights are longer than days

c) Days and nights are equal

d) The shortest day and the longest night in the year

234 / 313

Protons are :

a) Positively-charged particles with negligible mass

b) Positively-charged particles with significant mass

c) negatively-charged particles with negligible mass

d) neutral particles with significant mass

235 / 313

The process of converting oil into ghee is called :

a) Crystallisation

b) Hydrogenation

c) Oxidation

d) None of these

236 / 313

The setting Sun often looks oval in shape because of :

a) The fact that sun really becomes oval in the evening

b) Refraction of rays of sun passing through the atmosphere

c) Optical Illusion

d) Dispersion

237 / 313

Which of the following is used as food preservative ?

a) Sodium Benzoate

b) Acetic Acid

c) Citric Acid

d) All of these

238 / 313

Which one can be considered in representing the geographic coordinate system ?

a) Aptitude

b) Latitude

c) Attitude

d) None of these

239 / 313

Good cholesterol is also called :

a) LDL

b) HDL

c) ATP

d) ADP

240 / 313

Richest source of Riboflavin is :

a) Papaya

b) Mango

c) Bael

d) Karonda

241 / 313

All are particulate pollutants except :

a) Dust

b) Ozone

c) Soot

d) Smoke

242 / 313

A told B that C is his father's nephew. D is A's cousin but not the brother of C. What relationship is there between C and D ?

a) Father

b) Mother

c) Brother and Sister

d) Aunt

243 / 313

The ionosphere is located within the thermosphere and extends:

a) From 60-300 km above the Earth's surface

b) From 50-200 km above the Earth's surface

c) From 50-300 km above the Earth's surface

d) None of the above

244 / 313

Inert gases do not react with any other element because :

a) Their nucleus is very small

b) The temperature is not high enough

c) The pressure is not high enough

d) Their outermost electron level is filled with 8 electrons

245 / 313

Humidity is measured with a :

a) Barometer

b) Thermometer

c) Hygrometer

d) None of these

246 / 313

Plaster of Paris is obtained from :

a) Brochantite

b) Gypsum

c) Chalcanthite

d) None of these

247 / 313

Yeast is used in making bread because it produces :

a) Carbon dioxide

b) Sugar

c) Bacteria

d) Oxygen

248 / 313

The most dangerous infectious disease in the World, according to the World Health Organization (WHO) is:

a) Malaria

b) Tuberculosis (TB)

c) COVID-19

d) AIDS

249 / 313

On 21st June, the Sun is vertically overhead the :

a) Tropic of Capricorn

b) Equator

c) Position of Sun is not definite

d) Tropic of Cancer

250 / 313

The fixed circular paths around the nucleus are called :

a) Orbits

b) Orbitals

c) Nucleons

d) Mesons

251 / 313

Which of the following may be said to be the most harmful radiation emitted by the sun ?

a) Infra-red

b) Visible light

c) Ultra-violet

d) None of these

252 / 313

Which of following is not a unit of distance ?

a) Parsec

b) Astronomical Unit

c) Light Year

d) Foot Candle

253 / 313

The line joining the areas having the same rainfall is called :

a) Isobar

b) Isohyet

c) Isotherm

d) Isohaline

254 / 313

Rotation of Earth is from :

a) West to East

b) East to West

c) North to South

d) South to North

255 / 313

Which of the following is a non-point source of water pollution ?

a) Factories

b) Sewage treatment plants

c) Urban and suburban lands

d) All of these

256 / 313

The principle used in radar is the same as that of sonar. In radar we use radio waves whereas in sonar we use :

a) Infrared waves

b) Ultrasonic

c) Supersonic

d) None of these

257 / 313

When day and night are equal?

a) 23rd February and 21st September

b) 21st March and 23rd September

c) 23rd March and 21st September

d) None of these

258 / 313

Which vessel provide blood to liver :

a) Hepatic portal artery

b) Veins

c) Arteries

d) None of these

259 / 313

For what technology is the abbreviation GPS being used globally ?

a) Geo Pakistan System

b) Global Positioning System

c) Google Path System

d) None of these

260 / 313

What organelles plant cell have :

a) Cell wall

b) Vacuoles

c) Cell wall and vacuoles

d) None of these

261 / 313

Which of the following is the largest planet ?

a) Neptune

b) Jupiter

c) Saturn

d) Mars

262 / 313

Spring tides occur on new moon & full moon days because on these days :

a) Sun, Moon & Earth are in straight line

b) Sun & Earth are at right angles

c) Sun & Moon are at right angles

d) Earth & Moon at right angles

263 / 313

In fish liver oil, there is:

a) Vitamin A only

b) Vitamin D only

c) Vitamin A and Vitamin E

d) Vitamin A and Vitamin D

264 / 313

Earth completes one rotation around its own axis in :

a) 12 Hours

b) 24 Hours

c) 48 Hours

d) 365 Hours

265 / 313

Albumin is :

a) Egg protein

b) Milk protein

c) Egg fat

d) None of these

266 / 313

The pH of soil is raised using:

a) Lime stone

b) Gypsum

c) Urea

d) None of these

267 / 313

Fluoride pollution mainly affects :

a) Kidney

b) Brain

c) Liver

d) Teeth

268 / 313

The polar diameter of the earth is shorter than its equatorial diameter by :

a) 25 km

b) 80 km

c) 43 km

d) 30 km

269 / 313

Biological oxygen demand (BOD) measures :

a) Industrial Pollution

b) Air Pollution

c) Water Pollution

d) Dissolved oxygen needed by microbes to decompose organic waste

270 / 313

Which of the following is a chemical change ?

a) Evaporation of water

b) Burning of candle

c) Formation of ice

d) Liquefaction of air

271 / 313

A dark cloud of great vertical extent charged with electricity is:

a) Cumulus cloud

b) Nimbus cloud

c) Stratus cloud

d) Cumulonimbus cloud

272 / 313

Each gram of fat metabolized by the body releases about ______ calories.

a) 4

b) 5

c) 7

d) 9

273 / 313

What is non-reducing sugar :

a) Maltose

b) Sucrose

c) Glucose

d) None of these

274 / 313

The bonds present in Water is :

a) Ionic

b) Metallic

c) Non-polar covalent

d) Polar covalent

275 / 313

Most important effect of moon on earth is that it :

a) causes weather change

b) causes earthquakes

c) causes solar and lunar eclipse

d) Effects tides of the ocean

276 / 313

Which is the example of warm blooded animals ?

a) Reptiles

b) Dolphin

c) Frog

d) None of these

277 / 313

The equatorial radius of earth is approximately :

a) 12,700 km

b) 6,900 km

c) 6,371 km

d) 11,600 km

278 / 313

Pineapple variety suitable for canning is :

a) Queen

b) Kew

c) Mauritius

d) Cayenne

279 / 313

Which of the following on inhalation dissolves in blood hemoglobin more rapidly than oxygen ?

a) Sulphur dioxide

b) Carbon monoxide

c) Ozone

d) Nitrous oxide

280 / 313

Disease caused by eating fish inhibiting mercury contaminated water is :

a) Bright's disease

b) Hiroshima episode

c) Mina-mata disease

d) Osteosclerosis

281 / 313

The densest of all the atmosphere layers is :

a) Troposphere

b) Stratosphere

c) Mesosphere

d) Ionosphere

282 / 313

What is the scientific name of the atoms of the same element with different mass number ?

a) Subshells

b) Isotopes

c) Orbitals

d) None of these

283 / 313

The electron was discovered by :

a) Chadwick

b) Neil's Bohr

c) Milikan

d) J. J. Thomson

284 / 313

The isotopes of any element contain equal number of:

a) Protons

b) Neutrons

c) Both electrons and protons

d) None of these

285 / 313

Pasteurized milk is :

a) Specially treated milk in order to kill bacteria

b) Milk mixed with protein rich powder

c) Milk rich in fats

d) Medicated milk for children

286 / 313

Proton was discovered by :

a) Rutherford

b) Goldstein

c) Chadwick

d) J. J. Thomson

287 / 313

All other monosaccharides absorbed into the blood are converted into ______ in the liver.

a) Fructose

b) Galactose

c) Glucose

d) Sucrose

288 / 313

Which of the following is main nitrogenous waste in humans ?

a) Ammonia

b) Urea

c) Uric Acid

d) Ammonium Nitrate

289 / 313

The major photochemical oxidant is :

a) Ozone

b) Hydrogen peroxide

c) Nitrogen oxides

d) Peroxyl Acetyl Nitrate (PAN)

290 / 313

Cyclones :

a) Experience Coriolis effects that deflect air to the right in the Southern Hemisphere

b) Are associated with super geo-strophic winds

c) Are typically regions of fair weather

d) Are associated with low pressure systems

291 / 313

Dalton's atomic theory states that the smallest particle which can exist independently is :

a) An atom

b) A molecule

c) A cation

d) An anion

292 / 313

Unavailable energy (UE) in the system is called :

a) Minimum energy

b) Entropy

c) Thermal Energy

d) None of these

293 / 313

A nematode is a:

a) Worm

b) Fungus

c) Algae

d) Bacterial Cell

294 / 313

Which of the following is not a noble gas ?

a) Argon

b) Radon

c) Neon

d) Rayon

295 / 313

Which of the following is an example of sedimentary rock ?

a) Marble

b) Slate

c) Limestone

d) None of these

296 / 313

Isobars are the lines connecting the places having same :

a) Pressure

b) Rainfall

c) Height

d) Temperature

297 / 313

What is the approximate circumference of earth ?

a) 25,000 km

b) 16,000 km

c) 40,000 km

d) 50,000 km

298 / 313

What is the shape of our galaxy ?

a) Elliptical

b) Spiral

c) Lenticular

d) Irregular

299 / 313

Sound becomes hazardous noise pollution at :

a) 30 above dB

b) 80 above dB

c) 100 above dB

d) 120 above dB

300 / 313

Which of the following vitamin is produced in the sun's rays ?

a) A

b) B

c) C

d) D

301 / 313

Which one of the following may be considered as factor having influence on intelligence ?

a) Hereditary

b) Dressing

c) Smiling

d) None of these

302 / 313

Which are air pollutants ?

a) Aerosols

b) Sewage

c) DDT

d) Fertilizers

303 / 313

Example of secondary pollutant is :

a) Smog

b) Ozone

c) Peroxyl Acetyl Nitrate (PAN)

d) All of these

304 / 313

Three elements needed for the healthy growth of plants are :

a) Nitrogen

b) Potassium

c) Phosphorous

d) All of these

305 / 313

The gas associated with global warming is :

a) CO2

b) H2S

c) CH4

d) SO2

306 / 313

Lines drawn parallel to the equator are called :

a) Latitudes

b) Longitudes

c) Meridians

d) None of these

307 / 313

The longest and largest bone in human body is :

a) Spinal cord

b) Humerus

c) Fibula

d) Femur

308 / 313

Electromagnetic radiation is higher energy than visible radiation in :

a) Infrared rays

b) Microwave rays

c) X-rays

d) None of these

309 / 313

Mass number is equal to the :

a) number of protons + number of electrons

b) number of protons + number of neutrons

c) number of neutrons + number of electrons

d) number of electrons

310 / 313

The nearest star to our Sun is :

a) Proxima Centurai

b) Alpha Scorpii

c) Beta Orionis

d) vega

311 / 313

Which of the following carbohydrates provides fiber (roughage) in humans ?

a) Sucrose

b) Starch

c) Glycogen

d) Cellulose

312 / 313

Which refrigerant is commonly used in cold storage in our country ?

a) Ethylene

b) Carbide

c) Liquid Ammonia

d) Sodium Benzoate

313 / 313

which of the following planet orbits around the Sun in clockwise direction ?

a) Earth

b) Mercury

c) Jupiter

d) Venus

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General Science and Ability MCQs

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