Chemsitry MCQ's

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Chemistry MCQ's Here are MCQ's from Chesmitry. Read Questions carefully and answer them all.

1. Relationship between volume of gas and prevailing conditions of temperature and pressure called

A) Gas laws
B) Rate laws
C) Equilibrium laws
D) none

2. Liquids are less common than solids and gasses because

A) They exist in a narrow range of temperature and pressure
B) They have definite volume
C) Liquid molecules can slide past each other
D) Molecules contain three type of motion

3. Pressure remain constant, at which temperature the volume of gas becomes twice of what it is at 0 degree

A) 546 degree centigrade
B) 200 degree centigrade
C) 546 k
D) 273 k

4. The value of Vander Wall’s constant “A” for gases CO2,N2,O2 and SO2 are 3.59,1.39,1.36 and 6.17 atm dm6 mol-2 dm5 respectively. The gas which can be most easily liquefied is

A) CO2
B) N2
C) O2
D) SO2

5. Under which conditions, real gasses deviate from ideal ehavior

A) Low temperature and low pressure
B) High temperature and high pressure
C) Low temperature and high pressure
D) High temperature and low pressure

6. Compressibility factor for an ideal gas is

A) 1.5
B) 2.0
C) 1.0
D) 0.5

7. Which of the following gasses shows more ideal behavior at 0 degree

A) H2
B) He
C) CH4
D) NH3

8. Which of the following formula is correct for density of any gas

A) d=RT/PM
B) d=MT/PR
C) d=PM/RT
D) d=RM/PT

9. Critical temperature of gas depends upon

A) shape of molecule
B) inter molecular forces
C) size of molecules
D) all

10. the rate of diffusion of hydrogen gas is three times than that of an unknown gas at same temperature and pressure, then the molar mass of unknown gas is

A) 32
B) 16
C) 18
D) 27