Question 1 : __________ chart is a graph related to Antonie equation.
1. Enthalpy-concentration
2. Ostwald
3. Mollier's
4. Cox
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Question 2 : pH value of a solution containing 1 gm of hydrogen ion per litre will be
1. 0
2. 2
3. 1
4. 3
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Question 3 : With increase in temperature, the surface tension of water
1. increases
2. decreases
3. increases linearly
4. remains constant
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Question 4 : Enthalpy change resulting, when unit mass of solid is wetted with sufficient liquid, so that further addition of liquid produces no additional thermal effect, is called the heat of
1. wetting
2. mixing
3. complete wetting
4. adsorption
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Question 5 : The most convenient way of expressing solution concentration is in terms of
1. molality
2. normality
3. mole fraction
4. molarity
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Question 6 : No cooling occurs, when an ideal gas undergoes unrestrained expansion, because the molecules
1. collide without loss of energy.
2. are above the inversion temperature.
3. exert no attractive force on each other.
4. do work equal to loss in kinetic energy.
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Question 7 : 'The equilibrium value of the mole fraction of the gas dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid surface''. This statement pertaining to the solubility of gases in liquid is the __________ law.
1. Raoult's
2. Henry's
3. Amgat's
4. none of these
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Question 8 : A butane isomerisation process produces 70 kmole/hr of pure isobutane. A purge stream removed continuously, contains 85% n-butane and 15% impurity (mole%). The feed stream is n-butane containing 1% impurity (mole%). The flow rate of the purge stream will be
1. 3 kmole/hr
2. 4 kmole/hr
3. 6 kmole/hr
4. 5 kmole/hr
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Question 9 : At a temperature of 0°K, the molecules of a gas have only __________ energy.
1. rotational
2. none of these
3. vibrational
4. translational
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Question 10 : The heat capacity of a substance is
1. lower for liquid state than for gaseous state.
2. greater for liquid state than for solid state.
3. higher for solid state than for liquid state.
4. equal for solid and liquid states below melting point.
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