Basic Inorganic Chemistry Questions

Looking to test your knowledge of basic inorganic chemistry? You’re in the right place! Whether you’re a student preparing for exams or just brushing up on fundamentals, this quiz will help reinforce key concepts from the world of elements, compounds, the periodic table, and chemical bonding.

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Chemistry Practice Questions

Basic Inorganic Chemistry

1 / 30

Which of the following is the most electronegative element?

a) Fluorine

b) Chlorine

c) Bromine

d) Iodine

2 / 30

What is the electron configuration of the chloride ion?

a) 1s2 2s2 2p6 3s2 3p4

b) 1s2 2s2 2p6 3s2 3p6

c) 1s2 2s2 2p6 3s2 3p5

d) 1s2 2s2 2p6 3s2 3p3

3 / 30

Which of the following elements is a halogen?

a) Helium

b) Fluorine

c) Lithium

d) Boron

4 / 30

Which of the following elements is a metalloid?

a) Carbon

b) Silicon

c) Iron

d) Oxygen

5 / 30

What is the most abundant gas in Earth's atmosphere?

a) Oxygen

b) Nitrogen

c) Carbon Dioxide

d) Argon

6 / 30

What is the oxidation state of sulfur in H2SO4?

a) +2

b) +4

c) +6

d) +8

7 / 30

Which compound is used as a drying agent?

a) NaCl

b) CaCl2

c) KBr

d) LiF

8 / 30

What is the main component of limestone?

a) Calcium Carbonate

b) Sodium Chloride

c) Silicon Dioxide

d) Potassium Nitrate

9 / 30

What is the formula of ammonium sulfate?

a) NH4Cl

b) NH4NO3

c) (NH4)2SO4

d) NH4OH

10 / 30

Which of the following is not an alkaline earth metal?

a) Beryllium

b) Magnesium

c) Calcium

d) Sodium

11 / 30

Which of the following is a lanthanide?

a) Scandium

b) Yttrium

c) Cerium

d) Zirconium

12 / 30

What is the molar mass of water?

a) 16 g/mol

b) 18 g/mol

c) 28 g/mol

d) 32 g/mol

13 / 30

Which of the following compounds is ionic?

a) H2O

b) CH4

c) NaCl

d) CO2

14 / 30

What is the chemical symbol for lead?

a) Pb

b) Fe

c) Au

d) Ag

15 / 30

Which is the most stable allotrope of carbon?

a) Diamond

b) Graphite

c) Fullerene

d) Graphene

16 / 30

What is the primary use of helium?

a) Fuel

b) Balloon Inflation

c) Lubricant

d) Food Preservative

17 / 30

Which element is liquid at room temperature?

a) Mercury

b) Iron

c) Aluminum

d) Copper

18 / 30

Which of the following is a transition metal?

a) Iron

b) Oxygen

c) Phosphorus

d) Silicon

19 / 30

What is the valency of phosphorus in PCl5?

a) 3

b) 5

c) 1

d) 7

20 / 30

Which acid is known as muriatic acid?

a) Sulfuric Acid

b) Nitric Acid

c) Hydrochloric Acid

d) Acetic Acid

21 / 30

Which of the following is an amphoteric oxide?

a) ZnO

b) Na2O

c) CaO

d) CO2

22 / 30

What is the common name for sodium bicarbonate?

a) Baking Soda

b) Table Salt

c) Chalk

d) Lime

23 / 30

Which of the following is a noble gas?

a) Oxygen

b) Nitrogen

c) Neon

d) Hydrogen

24 / 30

What is the primary component of the Earth's core?

a) Iron

b) Nickel

c) Lead

d) Aluminum

25 / 30

Which of the following is a property of metals?

a) Brittle

b) Non-conductive

c) Ductile

d) Non-malleable

26 / 30

Which of the following is a non-metal?

a) Aluminum

b) Sulfur

c) Barium

d) Lead

27 / 30

Which element has the symbol 'K'?

a) Potassium

b) Sodium

c) Calcium

d) Carbon

28 / 30

Which metal is used in the manufacture of aircrafts due to its lightweight?

a) Iron

b) Aluminum

c) Copper

d) Zinc

29 / 30

Which element is the lightest metal?

a) Lithium

b) Beryllium

c) Sodium

d) Magnesium

30 / 30

Which element has the highest ionization energy?

a) Sodium

b) Potassium

c) Calcium

d) Helium

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🧪 What This Quiz Covers:

This set of basic inorganic chemistry questions covers:

Atomic structure
Periodic trends
Properties of metals and nonmetals
Oxidation states
Coordination compounds
Important inorganic reactions

🎯 Why Practice These Questions?

🧠 Strengthen Concepts – Reinforce your understanding of periodic trends.
📝 Exam Preparation – Great for MDCAT, NEET, CSS, and entry test chemistry sections.
⏱️ Time-Based Practice – Improve accuracy and speed.
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