The correct statements among the following about solid catalysts is -
a. | Same reactants may give different products by using different catalysts |
b. | Catalyst does not change ∆ H of reaction |
c. | Catalyst is required in large quantities to catalyse reactions |
d. | Catalytic activity of a solid catalyst does not depend upon the strength of chemisorption |
1. a and b
2. b and c
3. c and d
4. a and d
The process that does not occur at the interface of phases is :
1. Crystallisation
2. Heterogeneous catalysis
3. Homogeneous catalysis
4. Corrosion
The interface that cannot be obtained is
1. Liquid-liquid
2. Solid-liquid
3. Liquid-gas
4. Gas-gas
The correct statement regarding changes in the catalyst during a reaction is -
a. Physical
b. Qualitative
c. Chemical
d. Quantitative
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
In which of the following reactions heterogeneous catalysis is involved ?
1. (ii), (iii)
2. (ii), (iii) and (iv)
3. (i), (ii) and (iii)
4. (iv)