physics

1.If a body is moving with a uniform velocity, its acceleration is:

• (a) Positive

• (b) Negative

• (c) Zero

• (d) Cannot be determined

2. 2. A car accelerates uniformly from 20 m/s to 40 m/s in 5 seconds. What is the acceleration?

• (a) 4 m/s²

• (b) 6 m/s²

• (c) 8 m/s²

• (d) 10 m/s²

3. 3. The inertia of an object depends on its:

• (a) Shape

• (b) Mass

• (c) Speed
  

• (d) Volume

4. 4. The force acting per unit area on a surface is called _______.

5. 5. The SI unit of electric charge is _______.

6. 6. Which gas is evolved when dilute hydrochloric acid reacts with zinc?

• (a) Oxygen

• (b) Hydrogen

• (c) Carbon dioxide

• (d) Nitrogen

7. 7. The pH of a solution is 9. What is its nature?

• (a) Neutral

• (b) Acidic

• (c) Basic

• (d) Amphoteric

8. 8. Which salt is formed by the neutralization of sodium hydroxide with hydrochloric acid

• (a) Sodium carbonate

• (b) Sodium chloride

• (c) Sodium bicarbonate

• (d) Sodium nitrate

9. 9. Which metal does not react with dilute hydrochloric acid to produce hydrogen gas?

• (a) Zinc

• (b) Copper

• (c) Aluminium

• (d) Magnesium

10. 10. Which gas is produced when sodium reacts with water?

• (a) Oxygen

• (b) Hydrogen

• (c) Nitrogen

• (d) Carbon dioxide