Question

PHYSICS
1. What is the motion of earth around the sun?
2. The shortest distance from starting point to ending point is known as ?
3. The process of changing liquid into gaseous state at any temperature is called?
4. What is the chemical formulae common salt?
5. What is the boiling point of water?
6. Which method do you use to separate solid particles from liquid solution ?
7. Why do we point Iron grills and windows?
8. When oil and water mixed together, why do oil rises to the top of the water?
9. Write two examples for synthetic or artificial fibre?
10. Which part of Bar magnet contains more strength?
COCIAL​

Answer 1

1. The motion of the earth around the sun is revolution.

2. The shortest distance between starting point and end point is displacement.

3. The process of changing liquid into gaseous at any given temperature is vaporization.

4. The chemical formula of common salt is NaCl.

5. The boiling point of water is 100oC.

6. To separate solid particles from liquid solution filtration process is used.

7. We paint iron grills and windows as it rusts when comes in contact with air moisture. Painting avoid atmospheric contact so iron grills and windows are painted.

8. Because the density of oil is less than water.

9.nylon, polyester are artificial fibres.

10. End points of the bar magnet has the most strength.