Question

A. MCQs-Choose the correct answers.

1. An umbrella to be used to prevent directexposure from the sun should be

(a) white
(b) black
(c) dark-brown
(d) any colour

2. In hot desert areas, which of the followingmaterial should be used to make a rooftop?

(a) aluminium
(b) iron
(c) asbestos
d) all of these

3. Cooking vessels cannot be made of
(a) aluminium
(b) steel
(c) iron
(d) wood

4. The following is not one of the modes of transfer of heat.

(a) radiation
(b) conduction
( convection
(d) motion of object

5. Ocean currents are caused due to this present in ocean water.

(a) convection
(b) radiation
(c) conduction
(d) large volume of it

6. Conduction of heat can take place through only
(a) vacuum
(b) solids
(c) liquids
(d)gases

7. Which colour absorbs minimum radiation?

(a) white
(b) black
(c) yellow
(d) silver​

Answer 1

1 . white colour

2 . iron

3 . iron

4. radiation

5 . convection

6. liquids

7.silver

Answer 2

1.white colour

2.iron

3.iron

4.radiation

5.convection

6.liquids

7.silver