Question 1
Question: Matter has ___________.
| 1. | no mass but occupies space |
| 2. | mass but occupies no space |
| 3. | mass and occupies space |
| 4. | no mass and occupies no space |
Answer: 3
Question 2
Question: The gaseous form of water is called as _______.
| 1. | water gas |
| 2. | water vapour |
| 3. | fog |
| 4. | snow |
Answer: 2
Question 3
Question: The state of matter with only one free surface is _______.
| 1. | liquid |
| 2. | gas |
| 3. | solid |
| 4. | plasma |
Answer: 1
Question 4
Question: In gases, particles vibrate _________.
| 1. | about their mean position |
| 2. | about a vertical axis |
| 3. | about a horizontal axis |
| 4. | in any direction |
Answer: 4
Question 5
Question: Mixing of gases is called ______.
| 1. | diffusion |
| 2. | effusion |
| 3. | filtration |
| 4. | sedimentation |
Answer: 1
Question 6
Question: A property not possessed by a fluid is _________.
| 1. | it can flow |
| 2. | it has mass |
| 3. | it has a definite shape |
| 4. | can be perceived by our senses |
Answer: 3
Question 7
Question: Which among the following is a solid at room temperature?
| 1. | Nitrogen |
| 2. | Potassium permanganate |
| 3. | Bromine |
| 4. | Helium |
Answer: 2
Question 8
Question: Which of these is a characteristic property of gases?
| 1. | Gases are not at all rigid. |
| 2. | Gases are not compressible. |
| 3. | Gases have particles in fixed positions. |
| 4. | Gases have high density. |
Answer: 1
Question 9
Question: A solid has _________.
| 1. | maximum intermolecular space |
| 2. | definite mass but no definite volume |
| 3. | very high compressibility |
| 4. | maximum intermolecular force of attraction |
Answer: 4
Question 10
Question: Conversion of gas to liquid is called _________.
| 1. | condensation |
| 2. | sublimation |
| 3. | vapourisation |
| 4. | solidification |
Answer: 1
Question 11
Question: The process by which wet clothes dry up is called _______.
| 1. | evaporation |
| 2. | boiling |
| 3. | condensation |
| 4. | solidification |
Answer: 1
Question 12
Question: A solid that sublimes on heating is _________.
| 1. | sodium chloride |
| 2. | copper sulphate |
| 3. | lead sulphate |
| 4. | ammonium chloride |
Answer: 4
Question 13
Question: Matter changes from one state to another with change in _________.
| 1. | density |
| 2. | temperature |
| 3. | volume |
| 4. | height |
Answer: 2
Question 14
Question: The process of a solid changing into liquid is called ___________.
| 1. | liquefaction |
| 2. | melting |
| 3. | freezing |
| 4. | solidification |
Answer: 2
Question 15
Question: The freezing point of pure water is __________.
| 1. | 100oC |
| 2. | 0oC |
| 3. | 5oC |
| 4. | 78.3oC |
Answer: 2
Question 16
Question: The force between particles of matter is called as ___________.
| 1. | cohesive force |
| 2. | adhesive force |
| 3. | kinetic energy |
| 4. | thermal energy |
Answer: 1
Question 17
Question: Particles of matter are __________.
| 1. | stationary |
| 2. | vibrating in one position |
| 3. | in continuous motion |
| 4. | rotating about an axis |
Answer: 3
Question 18
Question: The temperature at which vapour changes into liquid is called ________.
| 1. | freezing point |
| 2. | melting point |
| 3. | boiling point |
| 4. | liquefaction point |
Answer: 4
Question 19
Question: Temperature is a measure of ___________.
| 1. | total kinetic energy of molecules |
| 2. | total potential energy of molecules |
| 3. | average potential energy of molecules |
| 4. | average kinetic energy of molecules |
Answer: 1
Question 20
Question: For any substance the temperature remains same during the change of state due to ___________.
| 1. | loss of heat |
| 2. | latent heat |
| 3. | less supply of heat |
| 4. | lattice energy |
Answer: 2
