Question 51 : The temperature of a gas in a closed container is 27° C. If the temperature of the gas is incresed to 300° C, then the pressure exerted is
1. trebled
2. doubled
3. halved
4. unpredictable
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Question 52 : 1 centipoise is equivalent to
1. 42 lb/ft.second
2. 42 lb/ft.hr
3. 1 centistoke
4. 1 gm/cm.second
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Question 53 : The value of gas constant 'R' is __________ kcal/kg.mole.°C.
1. 99
2. 79
3. none of these
4. 987
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Question 54 : A chemical process is said to occur under unsteady state, if the
1. ratio of streams entering/leaving are independent of time.
2. inventory changes do not take place.
3. none of these.
4. flow rates & composition both are time dependent.
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Question 55 : Number of gm moles of solute dissolved in one litre of a solution is called its
1. molality
2. molarity
3. equivalent weight
4. normality
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Question 56 : Size range of the colloidals particles is
1. 50 - 200 microns
2. 500 - 1000 microns
3. 5 - 200 milli-microns
4. 10 - 50 Angstrom
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Question 57 : Number of gm moles of solute dissolved in 1 kg of solvent is called its
1. molarity
2. normality
3. molality
4. formality
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Question 58 : Kopp's rule is helpful in finding the
1. heat capacities of gases.
2. heat capacities of solids.
3. molal heat capacities of gases.
4. activation energy.
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Question 59 : Diffusion is that property by virtue of which a perfume bottle when opened up in a room, makes the whole room fragrant with its smell. If a perfume 'X' diffuses twice as fast as another perfume 'Y'; what is the molecular weight of 'Y', if the vapor density of gas 'X' is 2 ? Molecular weight of gas 'X' is to be assumed to be
1. 2
2. 4
3. 8
4. 16
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Question 60 : Assume that benzene is insoluble in water. The normal boiling points of benzene and water are 80.1 and 100°C respectively. At a pressure of 1 atm, the boiling point of a mixture of benzene and water is
1. less than 80.1°C.
2. 80.1°C.
3. greater than 80.1°C but less than 100°C.
4. 100°C.
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