Olympiad Test Level 2: Water and Rocks - 1 - Class 2 MCQ

The magnet will pick up the nail because nail is made up of iron and magnet attracts iron.

The process of change of liquid into solid is called freezing.
Explanation:
- Freezing is a phase transition where a liquid substance changes into a solid state.
- When the temperature of a liquid is lowered below its freezing point, the kinetic energy of the particles decreases, causing them to slow down and come closer together.
- As a result, the attractive forces between the particles become stronger, forming a stable arrangement and giving rise to a solid structure.
- During freezing, the molecules in the liquid lose energy and adopt a fixed position in a regular pattern, forming a solid with a definite shape and volume.
- This process is commonly observed when water freezes into ice, but it can occur with other liquids as well.
- The freezing point of a substance is the temperature at which it changes from a liquid to a solid phase at standard atmospheric pressure.
- The reverse process of freezing is called melting, where a solid substance changes into a liquid state.
In summary, freezing is the process by which a liquid transforms into a solid when its temperature is lowered below its freezing point. It involves the particles in the liquid coming together and forming a stable arrangement in a regular pattern, resulting in the formation of a solid with a definite shape and volume.

There are total number of 6 solid things - spoon, pot, bottle, ball, tyre and watch.

Air can neither be seen nor be touched. Water is in solid state in form of ice.

Milk, juice and coconut water are examples of liquid matter. Liquids have size but do not have fixed shape.

Honey is a solid matter. Ice cream does not melts into a cream in refrigerator.

A sweater is made of fabric (wool), a spectacle is made up of glass, nails are up made up of metal (iron) and a bottle is made up of plastic.

Water can become three state of matter : solid (ice), liquid (water) and gas (water vapour).

A balloon contains a gas. A kettle contains tea, a liquid, A bowl contains ice-cream, a solid, A glass contains juice, a liquid.