Class 9th Chemistry Chapter 5


Total Marks: 34

1. The gaseous law that give relationship between volume and pressure is :
Dalton\'s law Charles\'s Law Graham\'s law Boyle\'s law
2. The blood pressure of healthy person is :
120 / 80 mmHg 140 / 90 mmHg 110 / 100 mmHg 150 / 70 mmHg
3. The constant factor in boyle\'s law is :
Volume Pressure Temperature Mole
4. Absolute Temperature Scale introduced by :
Charles Boil Henry Kelvin
5. The temperature at which in ideal gas would have zero volume is ?
- 760 C - 171.15 C - 273.15 C - 3.73.15 C
6. Density of a gas increases, when its:
Temperature increases Increase of temperature Increase of intermolecular forces Increase of polarity of molecules
7. 1 atm is equivalent to how many pascals?
101325 10325 106075 10523
8. Which one of the following is not amorphous?
Rubber Plastic Glass Glucose
9. The vapour pressure of a liquid increases with the:
Increase of pressure Increase of temperature Increase of intermolecular forces Increase of polarity of molecules
10. Solid particles possess which one of the following motions?
Rotational motion Vibrational motion Translational motion both translational and vibrational motions
11. At freezing point which one of the following coexists in dynamic equilibrium:
Gas and solid Liquid and gas Liquid and solid All of these
12. The simplest form of matter is.
Gas Liquid Solid Both B & C
13. Matter exists in how many physical state?
1 2 3 4
14. The escaping of gas molecules through a tiny hole into a space with lesser pressure called.
Evaporation Mobility Diffusion Effusion
15. Tyre puncture is an example of
Effusion process Diffusion process Evaporation process Condensation process
16. Which instrument is used to measure atmospheric pressure?
Manometer Barometer Lactometer Voltameter
17. The apparatus used to measure the pressure in laboratory is.
Hydrometer Monometer Thermometer Galvanometer
18. One atm is equal to
1 torr 760 torr 101326 torr 1 mm of Hg
19. Gases can be compressed because
There are no empty spaces between gas molecules There are large empty spaces between gas molecules Molecules are very close to each other Molecules are very large in size
20. At normal atmospheric pressure and 0 C the density of oxygen gas is.
1.4 gdm-3 1.4 gdm-2 1.4 kgdm-3 1.5 gdm-3
21. Polar liquids have vapour pressure than non-polar liquids at the same temperature
Greater Low Equal Dynamic
22. Vapour pressure of water in mmHg at 20 C is.
4.58 17.5 55.3 149.4
23. How many covalent bonds does N molecule have?
2 3 4 5
24. The process of changing of a gas phase into liquid is called
Evaporation Melting Transpiration Condensation
25. Boiling point of alcohol is.
68 C 78 C 88 C 98 C
26. The boiling point of acetic acid is.
118 C 128 C 100 C 180 C
27. The boiling point of water is
0 C 60 C 100 C 120 C
28. Freezing point of water is.
) 0 C 2 C 1 C 100 C
29. Freezing point of Ethyl alcohol is.
-115 C +15 C +116 C -116 C
30. Density of water is.
1.00 gcm-3 1.08 gcm-3 0.108 gcm-3 0.001 gcm-3
31. Which one of the following is amorphous solid?
Glucose Sodium Chloride Glass Diamond
32. The particles of solid substances are not mobile this property is called
Rigidity Density Allotropy Mobility
33. _________ is an example of amorphous solid
Sodium Chloride Diamond Plastics Glucose
34. Which is crystalline solid?
Diamond b) Glass Plastic Rubber