Which is lighter than dry air?

1. Moist air                             

2. SO2

3. Cl2                                      

4. O2

Subtopic:  Introduction to States of Matter |
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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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A = \(\frac{pV^{2} T^{2}}{n}\) 

The SI unit for the quantity A is -

1. \(N   m^{2}   K^{2}   mol^{- 1}\)

2. \(N   m^{4}   K   mol^{- 1}\)

3. \(N   m^{2}   K^{3}   mol^{- 1}\) 

4. \(N   m^{4}   K^{2} mol^{- 1}\)

Subtopic:  Introduction to States of Matter |
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A mixture of dihydrogen and dioxygen at one bar pressure contains 20% by weight of dihydrogen. The partial pressure of dihydrogen is -

1. 0.2 bar

2. 0.7 bar

3. 0.8 bar

4. 0.6 bar

Subtopic:  Introduction to States of Matter | Ideal Gas Law |
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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 |
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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 |
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Intermolecular forces are forces of attraction and repulsion between interacting particles that will be: 
A. dipole - dipole forces 
B. dipole-induced dipole forces 
C. hydrogen bonding 
D. covalent bonding 
E. dispersion forces 
Choose the most appropriate answer from the options given below: 
1. A, C, D, E are correct 
2. B, C, D, E are correct 
3. A, B, C, D, E are correct 
4. A, B, C, E are correct 
Subtopic:  Introduction to States of Matter |
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