1. Air Quality Index .......... I

(a) Air pollution measuring instrument

(b) is a measure of air quality

(c) Used to measure humidity level

(d) is used to estimate rainfall

Ans. (b) is a measure of air quality

2. In which of the following ecosystems more area is found?

(a) Tundra ecosystem

(b) Forest Guarantee System

(c) Water ecosystem

(d) Desert ecosystem

Ans. (c) Water ecosystem

3. The level of water pollution in rivers is measured by …….

(a) Dissolved amount of chlorine

(b) Dissolved quantity of Azon

(c) Dissolved amount of nitrogen

(d) dissolved amount of oxygen

Ans. (d) Dissolved amount of oxygen

4. An artificial satellite revolves around the Earth in a circular orbit, which unit remains fixed?

(a) linear velocity

(b) angular momentum

(c) angular displacement

(d) No option is correct

Ans. (b) Angular momentum

5. Which of the following lenses is used for correcting presbyopia?

(a) concave

(b) convex

(c) cylindrical

(d) Bifocal

Ans. (D) Bifocal

6. Which of the following blood proteins controls the amount of water in the plasma?

(a) Albumin

(b) globulin

(c) Fibulin

(d) none

Ans. (A) Albumin

7. Which of the following carbon monoxide and hydrogen

(a) Coal Gas

(b) producer gas

(c) water gas

(d) Dung gas

Ans. (c) Water gas

8. What is the gas used in balloons in place of hydrogen?

(a) Nitrogen

(b) helium

(c) neon

(d) Argon

Ans. (B) Helium

9. To prevent contact with atmospheric oxygen, phosphorus is stored in which of the following? Is a mixture of?

(a) Kerosene

(b) Petroleum

(c) water

(d) Amkraj (Aqua Regia)

Ans. (c) Water

10. Out of which of the following, isomeric is formed?

(a) X-ray

(b) gamma ray

(c) beta ray

(d) alpha ray

Ans. (c) Beta ray