Catalyst

Q. Which of the following acts as a catalyst in Haber’s process

1. Finely divided Nickel and soda lime deposited over pumice stone
2. Finely divided Osmium or Uranium
3. All of the above
4. Finely divided iron with molybdenum as a promoter

Q.

What is the catalyst used in the given reaction?

$2H_2{O}_2\to 2H_{2}O+O_2$

1. $CuS{O}_4$

2. $FeS{O}_4$

3. $N{a}_{2}S{O}_4$

4. $N{H}_{4}OH$

Q.

The rate of oxidation of chloroform decreases in the presence of alchohol. alchohol is a/an ___ for this reaction.

1. Electrolyte

2. Solvent

3. Positive Catalyst

4. Negative Catalyst

Q. Catalyst is used only to speed up a chemical reaction.

1. True
2. False

Q.

Which element is commonly used in catalytic converters due to its property of a reducing agent?

1. Pt

2. O

3. At

4. Cs

Q. Catalyst is of two types, which are the positive catalyst and the negative catalyst.

1. False
2. True

Q. A catalyst is used

1. Only for increasing the rate of a reaction
2. For altering the rate of a reaction
3. Only for decreasing the rate of a reaction
4. Only for altering the chemical equilibrium

Q. Which of the following is not true for a promoter?

1. a substance added to a solid catalyst
2. added to improve catalyst's performance
3. A promoter never exhibits catalytic effect.
4. Some promoters interact with active components of catalysts