The deviation of a gas from ideal behavior is expected to be minimum at -                                    

1. 350 K and 3 atm                   

2. 550 K and 1 atm

3. 250 K and 4 atm                   

4. 450 K and 2 atm

Subtopic:  Gas Laws |
 70%
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An ideal gas expands according to PV=constant. On expansion, the temperature of the gas:

1. Will rise.

2. Will drop.

3. Will remain constant.

4. Cannot be determined because the external pressure is not known.

Subtopic:  Gas Laws |
 69%
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The correct statement for an ideal gas equation is -

1. n is the number of molecules of a gas.

2. V denotes the volume of 1 mole of the gas.

3. n moles of a gas has a volume V.

4. p is the pressure of the gas when only one mole of the gas is present.

Subtopic:  Gas Laws |
 68%
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The gas among the following that can be most steadily liquefied is -

1. NH3                           

2. Cl2

3. SO2                           

4. CO2

Subtopic:  Liquefaction of Gases & Liquid |
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Internal energy and pressure of a gas per unit volume are related as                       

1. p= 23E                         

2. p = 32E

3. p=12E                         

4. p = 2E

Subtopic:  Kinetic Theory of Gas |
 60%
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If a gas expands at constant temperature, it indicates that                                     

1. kinetic energy of molecules decreases

2. pressure of the gas increases

3. kinetic energy of molecules remains the same

4. number of the molecules of gas increases

Subtopic:  Kinetic Theory of Gas |
 69%
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The condition of SATP refers to:

1. 25 °C and 2 atm             

2. 25 °C  and 1 atm

3. 0 °C  and 2 atm             

4. 25 °C  and 1 bar

Subtopic:  Introduction to States of Matter |
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While He is allowed to expand through a small jet under adiabatic condition heating effect is observed. This is due to the fact that:

1. helium is an inert gas

2. helium is a noble gas

3. helium is an ideal gas

4. the inversion temperature of helium is very low

Subtopic:  Ideal Gas Law |
 55%
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The ratio among most probable velocity, mean velocity, and root mean square velocity is given by

1. 1:2:3                           

2. 1: 2:3

3. 2:3:8π               

4. 2:8π:3

Subtopic:  Molecular Velocity |
 79%
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The condition that favour a pure sample of an ideal gas to have pressure of 1 atm and a concentration of

1 mol L-1  is -

(R=0.082 L atm mol-1K-1)                                     

1. At STP

2. When V = 22.4 L

3. When T = 12 K

4. Impossible under any conditions

Subtopic:  Ideal Gas Law |
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