Chemistry MCQs (Part 1)

Which of the following is a transition metal?

What is the significance of Gibbs free energy in electrochemistry?

In paper chromatography, what is the stationary phase?

Which transition metal is known for its use in catalytic converters?

What is the role of an inert electrode in electrolysis?

Which gas is produced when an acid reacts with a metal?

What is the main advantage of a lithium-ion battery?

Which of the following is a characteristic of f-block elements?

Which of the following does not belong to halogen family ?

Which transition metal is used in the Haber process?

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

Which metal acts as the anode in a galvanic cell?

Protons are :

Which of the following d-block elements has the highest atomic number?

Which of the following is NOT an example of a catalytic reaction?

What is the principle behind the separation process of chromatography?

Which metal is known as the 'coinage metal'?

In the Arrhenius equation k = Ae^(-Ea/RT), what does 'A' represent?

What is the significance of data preprocessing in chemometrics?

Which element is known as quicksilver?

In surface chemistry, what is the term for the process in which molecules are released from a surface?

Which of the following is not a property of actinides?

The rate of a reaction can be increased by:

What is the main application of lanthanides?

Which of the following is a method to determine the order of a reaction?

The fixed circular paths around the nucleus are called :

What is the common name for sodium bicarbonate?

Proton was discovered by :

Which of the following is a weak base?

Inert gases do not react with any other element because :

Which chemometric tool is used for outlier detection?

Which of the following phenomena demonstrates the particle nature of light?

What is Planck's constant used for?

Which property is associated with lanthanide contraction?

What is the role of a solvent in the extraction process?

Which ion is responsible for the acidic nature of a solution?

Which metal is used in the manufacture of photographic films?

Which ion is reduced in the electrolysis of NaCl solution?

Which of the following is a noble gas?

Which of the following is a non-linear modeling technique in chemometrics?

What is the main advantage of using a catalyst in a chemical reaction?

What is the significance of the wavefunction ψ in quantum mechanics?

Which of the following metals can exhibit a +1 oxidation state?

What is meant by the term 'catalyst poison'?

Mass of an electron is :

What is the purpose of the Born-Oppenheimer approximation in quantum chemistry?

What is the term for a substance that donates protons?

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

Two or more atoms combine to form :

What is the primary concept of Heisenberg's Uncertainty Principle?

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

Which separation method is based on the difference in solubility?

How does a catalyst affect the activation energy of a reaction?

In chemometrics, what is the role of multivariate data analysis?

Which element has the highest ionization energy?

What is the formula of ammonium sulfate?

What is the product of the reaction between an acid and a base?

What does LDA stand for in chemometrics?

Which of the following is a lanthanide?

What is measured by potentiometry?

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

What is the Langmuir adsorption isotherm used for?

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

Which element is known for exhibiting both +2 and +3 oxidation states?

Which of these elements is not a transition metal?

Which of the following is a property of actinides?

Which of the following pair is incorrect ?

What is the standard electrode potential of a hydrogen half-cell?

Which of the following is a characteristic of a good catalyst?

Which of the following statements is true for a zero-order reaction?

What is the process called when a solid surface adsorbs molecules from a gas or liquid?

Which of the following is the correct unit for a first-order reaction rate constant?

What is the primary purpose of chemometrics in chemistry?

What is Faraday's first law of electrolysis?

The nucleus of a hydrogen atom consists of :

Which of the following is a non-metal?

Which of the following is the most acidic?

In which of the following compounds is nickel in the +2 oxidation state?

What is the electron configuration of the chloride ion?

Which of the following is an example of a homogeneous catalyst?

Which of the following is not a property of acids?

Which of the following is the strongest acid?

The process of electron filling in d-block elements is known as?

What is the role of the mobile phase in chromatography?

What is the main advantage of using chemometrics in chemical analysis?

What does the term 'quantum leap' refer to in quantum mechanics?

Which of the following factors does NOT affect the adsorption of gases on solids?

What is the term for the smallest quantity of energy that can be emitted or absorbed as electromagnetic radiation?

Which method is typically used to separate alcohol from water?

Which is a common method used in chemometrics for pattern recognition?

What is the oxidation state of sulfur in H2SO4?

What does the term 'overpotential' refer to?

What is the chemical formula of sulfuric acid?

What color does litmus paper turn in a basic solution?

What is the main property of a strong base?

Which substance can act as both an acid and a base?

Atoms are composed of :

What is the chemical symbol for lead?

Which of the following is a key application of chemometrics?

Which of the following is an example of a heterogeneous catalyst?

Which of the following transition metals shows the highest oxidation state?

The chemical name of laughing gas is :

Which factor does NOT affect the rate of corrosion?

Which method is used to separate a magnetic substance from a mixture?

The electron was discovered by :

What separation technique is used to isolate a solid from a liquid?

What is the primary function of a catalytic converter in automobiles?

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

What role does the surface area of a catalyst play in a reaction?

Which method involves the use of a solvent to dissolve one component of a mixture?

Which of the following is a consequence of quantum tunneling?

Which element is present in all acids?

Which of the following is a common indicator of pH?

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

What is the molar mass of water?

Which of the following compounds is ionic?

Which acid is found in citrus fruits?

Which of these catalysts is used in the Haber process?

Which substance can be separated using decantation?

Which of the following is a characteristic property of transition elements?

What does the principal quantum number (n) specify?

Atomic weight of uranium 92U238 is :

Which of the following is not a noble gas ?

What is the main component of limestone?

In adsorption, what is the term for the substance being adsorbed?

Chadwick got the Noble Prize for the discovery of :

In catalysis, what is a promoter?

Which of the following describes a voltaic cell?

The driving force for making a bond is to :

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

Which of the following is the hardest substance ?

The nucleus of an atom consists of :

What is the purpose of the salt bridge in an electrochemical cell?

What type of data is primarily analyzed in chemometrics?

Which of the following describes the concept of 'spin' in quantum mechanics?

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

Which element is the lightest metal?

Which separation method is most suitable for separating a mixture of two solids, one of which is sublimate?

Which of the following is an amphoteric oxide?

What is the function of a galvanometer in an electrochemical cell?

Which algorithm is frequently used for classification in chemometrics?

What is the main reason for the formation of complexes by transition metals?

In a zinc-copper cell, what is the role of zinc?

What is the valency of phosphorus in PCl5?

What is the process of a base neutralizing an acid called?

Which of the following elements is a metalloid?

Which property of an electrolyte affects the conductance of the solution?

Which element has the symbol 'W'?

Who proposed the wave-particle duality theory?

Which of the following is a common oxidation state of the lanthanides?

What does PCA stand for in chemometrics?

Which type of adsorption involves weak van der Waals forces?

Which electrolyte is used in a lead-acid battery?

Which of the following is a chemical change ?

What is the principle of sublimation used for in separation methods?

Which of the following statements about adsorption is true?

Which principle states that two identical fermions cannot occupy the same quantum state simultaneously?

Which of the following is the first element in the f-block?

Which metal is commonly used for galvanizing iron?

What is the pH of a neutral solution at 25°C?

Which technique is used to purify a solid compound by dissolving it in a solvent and then allowing it to crystallize?

Which experiment is famous for demonstrating the wave-particle duality of electrons?

Which element is known for having the highest electrical conductivity?

Which technique is used to separate colored components of a mixture?

Which quantum number describes the shape of an orbital?

Which is the most stable allotrope of carbon?

The Nernst equation relates which of the following?

Who discovered neutrons ?

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

What is the electronic configuration of Fe2+?

What is the primary component of gastric acid?

Which catalyst is used in the Ostwald process for the manufacture of nitric acid?

What is the conjugate base of H2O?

The concept of superposition in quantum mechanics refers to what?

Which of the following is not an alkaline earth metal?

Which of the following is a secondary cell?

Which metal is used in the making of aircraft engines?

Which of the following is the most electronegative element?

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