Positive and Negative Catalysts

Q.

Phosphoric acid is a type of

1. negative catalyst

2. positive catalyst

3. non- catalyst

4. biological catalyst

Q.

Manganese dioxide is a type of

1. positive catalyst

2. biological catalyst

3. non- catalyst

4. negative catalyst

Q.

The catalyst used to reduce the decomposition of hydrogen peroxide is

1. Manganese dioxide

2. Iron

3. Vanadium Pentoxide

4. Phosphoric acid

Q.

A negative catalyst, like iron, decreases the rate of the reaction.

1. False

2. True

Q.

Iron is a negative catalyst.

1. True

2. False

Q.

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

1. Negative Catalyst

2. Electrolyte

3. Positive Catalyst

4. Solvent

Q.

The compound/compounds which acts as a positive catalyst is/are

1. Manganese dioxide

2. Iron

3. Phosphoric acid

4. Vanadium pentoxide

Q.

An amylase is a positive catalyst present in saliva which converts starch into maltose.

1. True

2. False

Q.

Phosphoric acid is a type of

1. negative catalyst

2. biological catalyst

3. positive catalyst

4. non- catalyst

Q.

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

1. Negative Catalyst

2. Positive Catalyst

3. Electrolyte

4. Solvent