Question

Name two non-contact forces. Give reason for your answer.

Answer 1

Answer:

The two non-contact forces are:

• Gravitational force
• Magnetic force

As , the above forces moves without any contact, so they are termed as non-contact forces.

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Answer 2

Answer:

F. STATE TRUE OR FALSE

1. Sodium hydrogen carbonate is the chemical name of baking soda. T

2. Evaporation of water is a chemical change.

3. Melting of wax and burning of candle both are similar changes

4. Corrosion does not harm the iron objects.

5. Chemical changes are always reversible.