Test: Catalysis


10 Questions MCQ Test Chemistry Class 12 | Test: Catalysis


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This mock test of Test: Catalysis for Class 12 helps you for every Class 12 entrance exam. This contains 10 Multiple Choice Questions for Class 12 Test: Catalysis (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Catalysis quiz give you a good mix of easy questions and tough questions. Class 12 students definitely take this Test: Catalysis exercise for a better result in the exam. You can find other Test: Catalysis extra questions, long questions & short questions for Class 12 on EduRev as well by searching above.
QUESTION: 1

A catalyst has no effect on

Solution:

In the presence of a catalyst, both the forward and reverse reaction rates will speed up equally, thereby allowing the system to reach equilibrium faster. However, it is very important to keep in mind that the addition of a catalyst has no effect whatsoever on the final equilibrium position of the reaction
A catalyst is not consumed in chemical reactions

QUESTION: 2

When body temperature is high, doctors advice consumption of light food. This is because

Solution:

As the temperature increases, so does the rate of reaction. But very high temperatures denature enzymes.The enzyme activity gradually increases with temperature up to around 37oC, or body temperature.

QUESTION: 3

In heterogenous catalysis of a gaseous reactants over solid catalyst

Solution:
QUESTION: 4

Which one is not true about catalyst ?

Solution:
QUESTION: 5

Catalyst only

Solution:

The Effect of Catalysts on the Activation Energy Barrier. Catalysts provide a new reaction pathway in which a lower A.E. is offered. A catalyst increases the rate of a reaction by lowering the activation energy so that more reactant molecules collide with enough energy to surmount the smaller energy barrier.

QUESTION: 6

Which of the following is the best example of shape selective catalysis?

Solution:

The catalytic reaction that depends upon the structure of pores of the catalyst and the size of the reactant and product molecules is called shape/selective catalysis. Zeolites are good shape selective catalysts because of their honeycomb structure. 

QUESTION: 7

Homogeneous catalyst is the one

Solution:
QUESTION: 8

Study the following reactions.

Which characteristic of catalyst is represented by them.?

Solution:

Selectivity is the ability to direct the reaction to get a particular product. Here we change the catalyst and we obtain different products with reactant remaining the same.

QUESTION: 9

In Rosenmund reduction, barium sulphate:

Solution:

 

The rosenmund reaction is catalyzed by palladium on barium sulfate. Barium sulfate reduces the activity of palladium due to its low surface area meaning it decreases the reducing power of palladium in order to prevent over-reduction of the acid.

QUESTION: 10

Why are enzymes highly specific?

Solution:

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