- 1. 1. The minimum amount of energy required for a chemical reaction to occur is known as the ----------
A) Energy of reaction
B) Energy of formation
C) Activation energy
D) Free energy
- 2. 2. The collision theory proposes that :
A) Reactants collide more frequently to bring about a reduction in the rate of reaction
B) All collisions of reactants are effective
C) The fewer the collision the faster the rate of chemical reaction rate
D) Reactant must collide with a certain amount of energy to form products
- 3. 3. If the rate depends on the square of the concentration of "A" , then it is referred to as --------
A) First order reaction
B) Fourth order reaction
C) Zero order reaction
D) Second order reaction
- 4. 4. If the rate of reaction is proportional to the concentration of a reactant "A", then the reaction is a ----------
A) Zero order reaction
B) First order reaction
C) Second order reaction
D) Fourth order reaction
- 5. 5. When the concentration of the reactant does not affect the rate of reaction, it is referred to as --------
A) Fourth order reaction
B) Zero order reaction
C) First order reaction
D) Second order reaction
- 6. 6. The sum of the powers of the concentration of the reactants which appear in the rate equation is known as -----
A) Reaction mechanism
B) Order reaction
C) Molecularity
D) Collision
- 7. 7. The number of molecules , atoms, radicals or ions taking part in the rate determining step is known as ---------
A) Rate of reaction
B) Rate determining step
C) Molecularity
D) Reaction mechanism
- 8. 8. The type of reaction where the reactant particles absorb light energy and react rapidly in a series of chain reactions is referred to as ------
A) Rate of reaction
B) Photochemical reaction
C) Order of reaction
D) Collision
- 9. 9. A substance which alters the rate of chemical reaction but remains chemically unchanged at the end of the reaction is called -------
A) Enthalpy
B) Catalyst
C) Energetics
D) Activation energy
- 10. 10. The graphical representation of the energy changes in the course of a chemical reaction is known as -------------
A) Rate curve
B) Energy barrier
C) Reaction profile
D) Activated complex
- 11. 11. Faraday's first law of electrolysis can be expressed mathematically as
A) Q =It
B) M =E¹It
C) Q = EIt
D) M =EIt
- 12. 12. One of the following cells is a simple electrochemical cell widely used to generate small currents of electricity for everyday purposes and industrial operations.
A) Leclanche cell
B) Avogadro's cell
C) Lead acid accumulator
D) Cathodic discharger
- 13. 13. -------- is the potential difference set up between an element and a solution of its ions.
A) Electrolysis
B) Electrolyte
C) Electroplating
D) Electrode potential
- 14. 14. The chemical decomposition of compounds which takes place when an electric current is passed through either a solution or the molten form of the compound is known as --------
A) Electromotive force
B) Electrode potential
C) Electrolysis
D) Potential difference
- 15. 15. ------- is the positive electrode by which current enters the electrolyte or by which electrons leave the electrolyte.
A) Cathode
B) Electrolytic cell
C) Anode
D) Electrode
- 16. 16. ------- is the negative electrode by which current enters the electrolyte or by which electrons leave the electrolyte.
A) Electroplate
B) Electrolytic cell
C) Anode
D) Cathode
- 17. 17. The container of electrolyte with two electrodes connected to a suitable direct current supply is called ---------
A) Glass Jar
B) Electrolytic cell
C) Electroplates
D) Electrodes
- 18. 18. One of the following is not a use of electrolysis.
A) Industrial preparation of NaOH
B) Diffusion of chemicals
C) Purification of metals
D) Extraction of metals
- 19. 19. The Micheal Faraday's constant is ------------
A) 9650000 coulombs
B) 965000 coulombs
C) 96500 coulombs
D) 9650 coulombs
- 20. 20. In electrochemical cells, ---------- occurs at the anode.
A) Reduction
B) Electromotive force
C) Electrode potential
D) Oxidation
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