State whether the following statements are true or false. If false, rewrite the correct form of statements.
1. Molecules of whole universe are identical.
2. Molecules of a solid can move freely within it.
3. A solid can be stored independently
without a vessel.
4. Boiling and condensation points of a pure
substance are having the same value.
5. Solids and liquids are closely packed.
6. A liquid can be compressed slightly but a
gas cannot be compressed.
7. The kinetic energy of molecules of a
substance increases with an increase in
temperature.
8. Gases have definite volume but do not
have a definite shape.
9. Water at 100°C has more heat energy than
steam at 100°C.
10. Water releases 80 calories of heat per gram
during freezing into ice at 0°C.
11. Evaporation takes place at all temperatures.
12. In the presence of wind, the rate of evaporation increases.
13. The process of a gas converting directly
into a solid is called sublimation.
14. Common salt undergoes sublimation.
Answers
Answer:
angle of incidence o, an angle of deviation and an
angle of emergence ε. Minimum deviation occurs
when...
A. 6 = 0 B. 6 = € C. O = € D. 8 = 0 - €
Explanation:
. Molecules of whole universe are identical.
2. Molecules of a solid can move freely within it.
3. A solid can be stored independently
without a vessel.
4. Boiling and condensation points of a pure
substance are having the same value.
5. Solids and liquids are closely packed.
6. A liquid can be compressed slightly but a
gas cannot be compressed.
7. The kinetic energy of molecules of a
substance increases with an increase in
temperature.
8. Gases have definite volume but do not
have a definite shape.
9. Water at 100°C has more heat energy than
steam at 100°C.
10. Water releases 80 calories of heat per gram
during freezing into ice at 0°C.
11. Evaporation takes place at all temperatures.
12. In the presence of wind, the rate of evaporation increases.
13. The process of a gas converting directly
into a solid is called sublimation.
14. Common salt undergoes sublimation.