SURFACE CHEMISTRY

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

SURFACE CHEMISTRY - 04

Email *

Name of Student *

School and City *

Q1. Identify the correct statement regarding enzymes *

1 point

Enzymes are normally heterogeneous catalysts that are very specific in their action.

Enzymes are specific biological catalysts that possess well-defined active sites

Enzymes are specific biological catalysts that can normally function at very high temperatures (T 1000K).

Enzymes are specific biological catalysts that cannot be poisoned.

Q2. A biological catalyst is *

1 point

A Nitrogenous base

An Enzyme

A Carbohydrate

A protein

Q3. The action of enzymes in living system is to *

1 point

Enhance immunity

Supply energy to tissues

Circulate oxygen

Enhance the rate of biochemical reactions.

Q4. What is the role of molybdenum in Haber’s process for manufacture of ammonia? *

1 point

As a reactant

As a catalytic promoter

As a catalyst

As catalytic poison

Q5. Milk is a colloid in which a *

1 point

Sugar is dispersed in a liquid

Solid is dispersed in a liquid

Liquid is dispersed in a liquid

Gas is dispersed in a liquid

Q6. Butter is a colloid formed when *

1 point

None of the above

Fat globules are dispersed in water

Water is dispersed in fat

Fat is dispersed in water

Q7. The size of colloidal particles is between *

1 point

10^–2 to 10^–3 cm

10^–7 to 10^–9 cm

10^–5 to 10^–7 cm

10^–9 to 10^–11 cm

Q8. An aerosol is a *

1 point

Dispersion of a solid or liquid in a gas

Dispersion of a liquid in a liquid

Dispersion of a solid in a liquid

Solid solution

Q9. An example of dispersion of a liquid in a gas is *

1 point

Mist

Milk

Foam

Vegetable oil

Q10. Alloy is an example of *

1 point

Gel

Solid solution

Sol

Solid emulsion

A copy of your responses will be emailed to the address you provided.

Submit

Clear form

Never submit passwords through Google Forms.

reCAPTCHA

Privacy Terms

This content is neither created nor endorsed by Google. Report Abuse - Terms of Service - Privacy Policy

Forms