Physics
State whether the given statements are true (T) or false (F). Correct the false statements.
(a) The process by which a solid gets changed into a liquid is called boiling.
(b) The molecules of liquid are not fixed at their positions.
(c) Solids are hard and rigid.
(d) The intermolecular force in gases is very strong.
(e) The molecules of a liquid come closer and start vibrating in their fixed positions.
Matter
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Answer
(a) False
Corrected Statement — The process by which a solid gets changed into a liquid is called melting.
(b) True
(c) True
(d) False
Corrected Statement — The intermolecular force in gases is very weak.
(e) False
Corrected Statement — The molecules of a solid come closer and start vibrating in their fixed positions.
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Related Questions
Fill in the blanks.
(a) Arrange solids, liquids and gases in order of increasing intermolecular force.
…………… < …………… < ……………(b) …………… have a fixed shape and size.
(c) …………… have a fixed volume but no fixed shape.
(d) …………… have neither fixed shape nor volume.
Fill in the blanks.
(a) A …………… is the smallest unit of matter that can exist independently.
(b) On cooling, a liquid gets changed into a …………… .
(c) The molecules in a …………… move freely in all directions.
(d) …………… have a definite volume.
(e) Gases are not …………… at all.
Match the columns.
Column A Column B 1. Liquid to gas (a) Gas 2. Fixed shape and definite volume (b) Condensation 3. Gas to liquid (c) Liquid 4. Can be compressed (d) Boiling 5. Irregular shape and definite volume (e) Solid Which of the following is a solid?
- Air
- Water
- Chalk
- Milk