Dipole-dipole forces act between the molecules possessing permanent dipole. Ends of dipoles possess 'partial charges'.

The partial charge will be-

1. More than unit electronic charge.

2. Equal to unit electronic charge.

3. Less than unit electronic charge.

4. Double the unit electronic charge.

Subtopic:  Introduction to States of Matter |
 65%
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The interaction energy of London force is inversely proportional to sixth power of the distance between two interacting particles. Their magnitude depends upon-

1. Charge of interacting particles.

2. Mass of interacting particles.

3. Polarizability of interacting particles.

4. Strength of permanent dipoles in the particles.

Subtopic:  Introduction to States of Matter |
 59%
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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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If 300 ml of a gas at 27°C is cooled to 7°C at constant pressure, its final volume will be:

1. 135 ml 2. 540 ml
3. 350 ml 4. 280 ml
Subtopic:  Gas Laws |
 85%
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Boyle's law is applicable in :

1. Isobaric process

2. Isochoric process

3. Isothermal process

4. Adiabatic process

Subtopic:  Gas Laws |
 85%
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As the temperature increases, average kinetic energy of molecules increases. With increase in temperature at constant volume, the pressure -  

1. Increases

2. Decreases

3. Remains same

4. Becomes half

Subtopic:  Gas Laws |
 81%
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A plot of volume versus temperature (T) for a gas at constant pressure is a straight line passing through the origin. The plots at different values of pressure are shown in the figure given below.

       

The correct order of pressure is -

         Temperature (K) 

1. p1>p2>p3>p4

2. p1=p2=p3=p4

3. p1<p2<p3<p4

4. p1<p2=p3<p4

Subtopic:  Gas Laws |
 80%
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V versus T curves at constant pressure P1 and P2 for an ideal gas are as shown in the figure. The correct statement is-

1. P1>P2

2. P1<P2

3. P1=P2

4. All of the above

Subtopic:  Gas Laws |
 82%
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At 0°C, the density of a certain oxide of a gas at 2 bar is the same as that of dinitrogen at 5 bar.

The molecular mass of the oxide would be -

1. 35 g/mol

2. 45 g/mol

3. 70 g/mol

4. 60 g/mol

Subtopic:  Gas Laws |
 76%
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A 200 mL flask having oxygen at 220 mm and a 300 mL flask having nitrogen at 100 mm are connected in such a way that O2 and N2 may combine in their volumes if temperature is kept constant. The total pressure of the gaseous mixture is-

1. 158 mm

2. 138 mm

3. 148 mm

4. 168 mm

Subtopic:  Gas Laws |
 74%
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