A catalyst...

A catalyst

A

increases the average kinetic energy of reacting molecules

B

increases the activation energy

C

alters the reaction mechanism

D

increases the frequency of collisions of reacting species

Text Solution

Verified by Experts

The correct Answer is:

C

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Knowledge Check

The following are some statements about characteristics of catalyst I) A catalyst generally function under the optimum conditions like pH, temperature II) A catalyst has a selective action III) Small amount of the catalyst is sufficient The correct combination is

A

All are correct

B

Only I and II

C

Only II and III

D

Only II

Enzymes are biological catalysts that differ from non - biolgical catalysts basically in

A

Non - protein nature

B

Protein nature

C

Being not utilized in reaction

D

Maintaining equilibrium of reaction

Lindlar's catalyst is

A

Pt in ethanol

B

`pd + BaSO_4 `

C

Ni in ethanol

D

Na in liq. `NH_3 `

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