11th Class FSc Part 1 Chemistry Chapter Wise Online MCQ Test With Answer PDF

Chemistry Fsc Part 1 Online Test

Sr. #	Questions	Answers Choice
1	When a chemical reaction is completed.	Instantaneous rate > average rate Instantaneous rate = average rate Instantaneous rate is zero Both average and instantaneous rates become zero
2	Which one of the following statements is incorrect.	Enzymes are protein in nature Enzymes are catalyst Enzymes can catalyze any reaction Urease is an enzyme
3	The substance which decrease the activity of a catalyst is called.	Promoter Activator Inhibitor Positive catalyst
4	A substance which itself is not a catalyst but increases the activity of a catalyst is called.	Promoter Poisoner Inhibitor Enzyme
5	A type of meals are usually used as catalyst.	Coinage metal Alkali metals Transition metals alkaline earth metals
6	Which statement is incorrect about activated complex	Short lived Maximum energy Unstable combination of atoms Less energy than Ea
7	When a reaction occurs in many steps than the slowest step is.	Mechanism step Rate determining step enthalpy determining step None of the above
8	Which statement is incorrect about order of reaction	It cannot be determined experimentally It is determined experimentally Sum of exponents in rate equation It can have fraction value
9	Photosynthesis a photochemical reaction has order of reaction	0 1 2 Fractional order
10	When a chemical reaction is completed the	Instantaneous rate > average rate Instantaneous rate = average rate Instantaneous rate is zero Both average and instantaneous rates become zero
11	a zero order reaction is one is which	Reactants do not react One reactant is in large excess Concentration of reactant do not change with passage of time Rate is of affected by changing concentration of reactants
12	After 3 half life of a chemical reaction, amount of reactant un reactive will be.	50% 25% 12.5% 6.25%
13	Half -Life for a given reaction is doubled if initial concentration is doubled. The order of reaction is.	0 1 2 3
14	Half -Life period of a first order reacting is independent of.	Initial concentration of the compound Conditions of temperature Presence of catalyst All the above
15	Chemical reactivity of different substance is controlled by	Atomic number Electronic arrangement Mass number Number of isotope of reactant elements
16	If reactants have very low activation energy it means that reaction is.	Slow Fast Endothermic Exothermic
17	Rate of a chemical reaction generally increase rapidly even for small increase in temperature because of rapid increase in the	Collisions frequency Activation energy Average KE of molecules Fraction of molecules with energies more than activation energy

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