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Q1. Which of the following units is useful in relating concentration of solution with its vapour pressure?
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1 point
mole fraction
parts per million
mass percentage
molality
Q2. On dissolving sugar in water at room temperature solution feels cool to touch.Under which of the following cases dissolution of sugar will be most rapid?
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1 point
Sugar crystals in cold water.
Sugar crystals in hot water.
Powdered sugar in cold water.
Powdered sugar in hot water
Q3. A beaker contains a solution of substance ‘A’. Precipitation (Settle down) of substance ‘A’ takes place when small amount of ‘A’ is added to the solution. The solution is _____________ -
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1 point
saturated
supersaturated
unsaturated
concentrated
Q4. Maximum amount of a solid solute that can be dissolved in a specified amount of a given liquid solvent does not depend upon __________
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1 point
Temperature
Nature of solute
Pressure
Nature of solvent
Q5. Low concentration of oxygen in the blood and tissues of people living at high altitude is due to _____________
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1 point
low temperature
low atmospheric pressure
high atmospheric pressure
both low temperature and high atmospheric pressure
Q6. Colligative properties depend on -
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1 point
the nature of the solute particles dissolved in solution.
the number of solute particles in solution.
the physical properties of the solute particles dissolved in solution.
the nature of solvent particles.
Q7. Which of the following aqueous solutions should have the highest boiling point?
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1 point
1.0 M NaOH
1.0 M Na2SO4
1.0 M NH4NO3
1.0 M KNO3
Q8. The unit of Ebulioscopic (Elevation constant) constant is _______
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1 point
K kg mol–1 or K (molality)–1
mol kg K–1 or K–1(molality)
kg mol–1 K–1 or K–1(molality)–1
K mol kg–1 or K (molality)
Q9. In comparison to a 0.01 M solution of glucose, the depression in freezing point of a 0.01 M MgCl2 solution is _____
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the same
about twice
about three times
about six times
Q10. An unripe mango placed in a concentrated salt solution to prepare pickle, shrivels because -
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1 point
it gains water due to osmosis.
it gains water due to reverse osmosis.
it loses water due to osmosis.
None of the above
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