The density of neon will be highest at:

(1) STP

(2) 0° C,2 atm

(3) 273° C, 1 atm 

(4) 273° C,2 atm

Subtopic:  Ideal Gas Law |
 71%
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At 27° C, the ratio of root mean square speeds of ozone to oxygen is-

1.(3/5)

2. (4/3)

3. (2/3)

4. 0.25

Subtopic:  Molecular Velocity |
 85%
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How many mole of He gas occupy 22.4 litre at 30 C and one atmospheric pressure?

(1) 0.90

(2) 1.11

(3) 0.11

(4) 1.0

Subtopic:  Ideal Gas Law |
 73%
From NCERT
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The rms speed of the molecules of a gas of density 4 kgm-3 and pressure 1.2 ×105×Nm-2 is;

(a) 120 ms-1
(b) 300 ms-1
(c) 600 ms-1
(d) 900 ms-1

Subtopic:  Molecular Velocity |
 78%
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4.0 g of argon gas pressure P and temperature T K in a vessel. On increasing the temperature by 50o, 0.8 g of argon was given out to maintain the pressure P.

The original temperature was:

1. 73 K 

2. 100 K

3. 200 K 

4. 510 K 

Subtopic:  Ideal Gas Law |
 65%
From NCERT
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Correct statement regarding the heating of a liquid is - 

1. Surface tension increases

2. Surface tension is lowered

3. Viscosity increases

4. Surface tension is not affected

Subtopic:  Liquefaction of Gases & Liquid |
 73%
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Which of the following laws leads us to arrive at the conclusion that 1 g-molecule of each gas at STP occupies a volume of 22.4 L?

1. Dalton's law

2. Law of combining volumes

3. Avogadro's law

4. Boyle's law

Subtopic:  Gas Laws |
 74%
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0.1 mole of gas absorbs 41.75 J of heat, the rise in temperature occurs 20°C, the gas must be

(1) Triatomic

(2) Diatomic

(3) Monoatomic

(4) (2) and (3) both

Subtopic:  Kinetic Theory of Gas |
 57%
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Van der Waals real gas, act as an ideal gas, at :

(1) High temperature, low pressure.

(2) Low temperature, high pressure.

(3) High temperature, high pressure.

(4) Low temperature, low pressure.

Subtopic:  van der Waal’s Correction |
 84%
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By the ideal gas law the pressure of 0.60 mol NH3 gas in a 3.00 litre vessel at 25°C is

(1) 48.9 atm

(2) 4.89 atm

(3) 0.489

(4) 489 atm

Subtopic:  Ideal Gas Law |
 77%
From NCERT
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