Reaction Kinetics MCQ's test 3

06:00:00 Unknown 0 Comments

Chapter 11 Reaction Kinetics
Reaction kinetics chapter 11 chemistry MCQ's for the preparation of entry test for UET, UHS, NUST, PIEAS, GIKI, FAST, AIR, other engineering universities and Medical colleges. These are also very helpful for annual examination for FSc.


1. 21. When we perform the same reaction by taking two different initial concentrations of a reactant for a second order reaction, then
    A) Reaction becomes exothermic
    B) Energy of activation is different
    C) Mechanism of reaction is changed
    D) Half life period is changed


2. 22. Half life period of a reaction is inversely proportional to the initial concentration of the reactant, then order of reaction is

    A) Third order
    B) Second order
    C) First order
    D) Zero order


3. 23. Al foil reacts moderately with NaOH on warming producing H2 gas but this reaction is rapid if powdered Al treated with even cold NaOH. It is due to

    A) Increased surface area of reactants
    B) Le-Chatliers principle
    C) Common ion effect
    D) Temperature


4. 24. Which statement about Arrhenius equation is incorrect

    A) Factor A called Arrhenius constant depends upon collision frequency of reactants
    B) Rate of reaction increase by increasing temperature
    C) Rate constant k is increased
    D) Activation energy is decreased by rise in temperature


5. 25. A catalyst increases the rate of a chemical reaction but remains unchanged because

    A) It increases the temperature
    B) It increases the surface area
    C) It increases the rate constnt
    D) It decreases the energy of activation


6. 26. Catalysis in which catalyst and reactants are in the same phase is called as

    A) Homogeneous catalysis
    B) Heterogeneous catalysis
    C) Both of the above
    D) none


7. 27. Hydrogenation of vegetable oil is accelerated by Ni. The activity of Ni is increased by a promoter or activator which is

    A) Na and K
    B) Na and Hg
    C) Hg and Zn
    D) Cu and Te


8. 28. Complex protein molecules which catalyses the organic reaction in the living cells are called as

    A) Living organism
    B) Enzymes
    C) Viruses
    D) Bacteria

I am Mechatronics and Control Engineer from UET, Lahore. Helping Engineering students gives me pleasure.

You Might Also Like

0 comments:

Confused? Feel Free To Ask
Your feedback is always appreciated. We will try to reply to your queries as soon as time allows.

Subscribe to: Post Comments (Atom)