| Chapter-5: States of Matter |
1. A gas will approach ideal behaviour at
- Low temperature, low pressure
- Low temperature, high pressure
- High temperature, low pressure
- High temperature, high pressure
[su_spoiler title=”Answer ” style=”fancy”] High temperature, low pressure [/su_spoiler]
2. Sl unit of pressure is :
- Pascal
- torr
- mm of Hg
- none of the above
[su_spoiler title=”Answer ” style=”fancy”] Pascal [/su_spoiler]
3. If the pressure of a gas is increased then its mean free path becomes:
- 0
- Less
- More
- Infinity
[su_spoiler title=”Answer ” style=”fancy”] Less [/su_spoiler]
4. 1 atmosphere is equal to:
- 1 torr
- 760 cm
- 760 mm
- 76 torr
[su_spoiler title=”Answer ” style=”fancy”] 760 mm [/su_spoiler]
5. The rise or fall of a liquid within a tube of small bore is called :
- Surface Tension
- Capillary Action
- Viscosity
- Formation of Curvature
[su_spoiler title=”Answer ” style=”fancy”] Capillary Action [/su_spoiler]
6. Cooling is caused by :
- Evaporation
- Convection
- Conduction
- none of the above
[su_spoiler title=”Answer ” style=”fancy”] Conduction [/su_spoiler]
7. The volume of 2.8 g of carbon monoxide at 27°C and 0.0821 atm is
- 30 L
- 3 L
- 0.3 L
- 1.5 L
[su_spoiler title=”Answer ” style=”fancy”] 30 L [/su_spoiler]
8. Grahams law refers to :
- Boiling point of water
- Gaseous Diffusion
- Gas Compression
- Volume changes of gases
[su_spoiler title=”Answer ” style=”fancy”] Gaseous Diffusion [/su_spoiler]
9. Containers A and B have same gas. Pressure, volume and temperature of A are all twice those of B. The ratio of number of molecules of A and B is
- 1:2
- 2:1
- 1:4
- 4:1
[su_spoiler title=”Answer ” style=”fancy”] 2:1 [/su_spoiler]
10. The internal resistance to the flow of a liquid is called :
- Surface Tension
- Diffusion
- Viscosity
- Osmosis
[su_spoiler title=”Answer ” style=”fancy”] Viscosity [/su_spoiler]
11. When did substances exist in different crystalline forms the phenomenon is called :
- Allotropy
- Polymorphism
- Polymerization
- Isomorphism
[su_spoiler title=”Answer ” style=”fancy”] Polymorphism [/su_spoiler]
12. According to kinetic theory of gases,in an ideal gas,between two successive collisions a gas molecule travels
- In a circular path
- In a wavy path
- In a straight line path
- With an accelerated velocity
[su_spoiler title=”Answer ” style=”fancy”] In a straight line path [/su_spoiler]
13. Equal masses of ethane and hydrogen are mixed in an empty container at 25°C . The fraction of total pressure exerted by hydrogen is
- 1:2
- 1:1
- 01:16
- 15:16
[su_spoiler title=”Answer ” style=”fancy”] 15:16 [/su_spoiler]
14. The rates of diffusion of gases are inversely proportional to square root of their densities . This statement refers to :
- Daltons Law
- Grahams Law
- Avogadros Law
- None of the Above
[su_spoiler title=”Answer ” style=”fancy”] Grahams Law [/su_spoiler]
15. According to kinetic theory of gases,in an ideal gas,between two successive collisions a gas molecule travels
- In a circular path
- In a wavy path
- In a straight line path
- With an accelerated velocity
[su_spoiler title=”Answer ” style=”fancy”] In a straight line path [/su_spoiler]