Kinetic Theory of Gases Test

Result

Kinetic Theory of Gases Test - 13

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Weekly Quiz Competition

Question 1
4 / -1

At 100 K and 0.1 atmospheric pressure, the volume of helium gas is 10 litres. If volume and pressure are doubled, its temperature will change to

A
127 K

B
400 K

C
25 K

D
200 K

Solution
Question 2
4 / -1

An electron tube was sealed off during manufacture at a pressure of 1.2 × 10^–7 mm of mercury at 27^oC. Its volume is 100 cm³. The number of molecules that remain in the tube is _______(density of mercury is 13.6 g cm^–3)

A
3.9 × 10¹¹

B
3 × 10¹⁶

C
2 × 10¹⁴

D
7 × 10¹¹

Solution
Question 3
4 / -1

A vessel contains 1 mole of O₂ gas (relative molar mass 32) at a temperature T. The pressure of the gas is P. An identical vessel containing 1 mole of He gas (relative molar mass 4) at a temperature 2 T has pressure of ..........

A
8 P

B
P/8

C
2 P

D
P

Solution
Question 4
4 / -1

At a given volume and temperature the pressure of a gas

A
Varies inversely as the square of its mass

B
Varies inversely as its mass

C
is independent of its mass

D
Varies linearly as its mass

Solution
Question 5
4 / -1

The product of the pressure and volume of an ideal gas is

A
A constant

B
Directly proportional to its temperature

C
Inversely proportional to its temperature

D
Approx. equal to the universal gas constant

Solution
Question 6
4 / -1

Air is pumped into an automobile tube upto a pressure of 200 kPa in the morning when the air temperature is 22^o C. During the day, temperature rises to 42^o C and the tube expands by 2% The pressure of the air in the tube at this temperature will be approximately.

A
209 kPa

B
206 kPa

C
200 kPa

D
212 kPa

Solution
Question 7
4 / -1

2g of O₂ gas is taken at 27^o C and pressure 76 cm Hg. Find out volume of gas (ln liter)

A
3.08

B
44.2

C
1.53

D
2.44

Solution
Question 8
4 / -1

1 mole of gas occupies a volume of 100 ml at 50 mm pressure. What is the volume occupied by two moles of gas at 100 mm pressure and at same temperature

A
50 ml

B
200 ml

C
100 ml

D
500 ml

Solution
Question 9
4 / -1

The temperature of a gas at pressure P and volume V is 27^o C Keeping its volume constant if its temperature is raised to 927^o C, then its pressure will be

A
3 P

B
2 P

C
4 P

D
6 P

Solution
Question 10
4 / -1

At what temperature volume of an ideal gas becomes triple

A
819^o C

B
182^o C

C
646^o C

D
546^o C

Solution