Differences between Solids, Liquids, Gases

Q.

All objects available around us have same shapes, different colours and uses.

1. True

2. False

Q.

What is the physical state of water at ${25}^{0}C$?

Q.

Air doesn't occupy space

1. True

2. False

Q. Which one of the following is a hard substance?

1. All of the above
2. Iron
3. Sponge
4. Cotton

Q. The given figure shows melting of butter and boiling of water. What can be inferred from this figure?

1. Matter has mass
2. Matter can change its state
3. Matter can occupy space
4. Matter neither has mass nor occupies space

Q.

John and Sam were playing with empty bottles, John took an empty plastic bottle, turned it upside down and dipped its open mouth into a bucket filled with water. He then tilted the bottle slightly and made the following observations.

(i)Water did not enter the bottle when it was in inverted position.
(ii)Bubbles of air came out from the bottle as soon as it was tilted.
(iii)Some water entered the bottle
(iv)No bubbles formed, only water entered the bottle.

Which observations is/are correct?

1. Only (i) , (ii) and (iii) .

2. Only (iii) and (iv)

3. Only (i)

4. Only (ii) and (iii).

Q.

2. The force of attraction between particles of matter is called……………

Q. To melt ice to water at $-{30}^{\circ }C$ do we need to increase or decrease pressure? According to Boyle's law.

Q. Pair the physical state of given substance with the property associated to it.

1. Solid
2. Liquid
3. Gas
4. Fixed shape & volume
5. Indefinite shape & volume
6. Indefinite shape & definite volume