1. The temperature at which the catalytic activity of the catalyst is maximum, is called-
A. room temperature
B. critical temperature
C. absolute temperature
D. optimum temperature
2. The catalyst used in hydrogenation of oils is-
3. Enzyme catalysis is an example of-
A. homogeneous catalysis
B. heterogeneous catalysis
C. auto catalysts
D. induced catalysts
4. The name catalysis was given by-
5. The biocatalysts are-
D. all proteins
6. Efficiency of the catalyst depends on its-
A. physical state
B. amount used
C. molecular state
D. number of free valencies
7. A catalyst increases the rate of a chemical reaction by-
A. reacting with reactants
B. increasing the activation energy
C. decreasing the activation energy
D. reacting with products
8. Assertion(A): A chemical reaction becomes faster at higher temperature.
Reason(R): At higher temperature, molecular motion becomes more rapid.
A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but R is not correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
9. Which of the following type of material act as effective catalysts?
A. radioactive metals
B. alkaline earth metals
C. transition metals
D. alkali metals
10. The hydrolysis of cane-sugar is catalyzed by-
C. mineral acid
D. all of these