Dust & Smoke

Q.

Match the following terms in Column - I with those in Column - II correctly. $\begin{array}{cccc}& \text{Column-I}& & \text{Column-II}\\ \text{a}.& \text{Aquatic animals}& 1.& \text{Sail boat}\\ \text{b}.& \text{Mountaineers}& 2.& \text{Soot and dust}\\ \text{c}.& \text{Factories}& 3.& \text{Oxygen cylinders}\\ \text{d}.& \text{Wind}& 4.& \text{Dissolved oxygen}\end{array}$

1. a-1, b-2, c-3, d-4

2. a-3, b-4, c-1, d-2

3. a-4, b-3, c-2, d-1

4. a-2, b-1, c-4, d-3

Q. What is the moisture present in atmosphere chemically composed of?

1. $C{O}_2$
2. $O_2$
3. $N_2$
4. $H_{2}O$

Q. Match the following terms in Column - I with those in Column - II correctly.
$\begin{array}{cccc}& Column-I& & Column-II\\ a.& Aquaticanimals& 1.& Sailboat\\ b.& Mountaineers& 2.& Sootanddust\\ c.& Factories& 3.& Oxygencylinders\\ d.& Wind& 4.& Dissolvedoxygen\end{array}$

1. a-3, b-4, c-1, d-2
2. a-4, b-3, c-2, d-1
3. a-1, b-2, c-3, d-4
4. a-2, b-1, c-4, d-3

Q. ________ is made up of dust particles and gases.

1. Smoke
2. Water vapour
3. Rain drops
4. Hail