181.The correct order of increasing vapour pressure of 0.1 m aqueous solution of glucose, NaCl and magnesium chloride is glucose < NaCl < magnesium chloride.
A.
False
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182.Molality is expressed in moles/kg.
A.
False
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183.Molal depression constant depends upon the nature of the solvent.
A.
True
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Multiple Choice Questions
184.Molality is expressed in
Grams/litre
Litres / moles
Moles/litre
Moles / kg
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185.Which of the following liquid pairs will show positive deviation from Raoult’s law?
water-hydrochloric acid
water-nitric acid
acetone chloroform
Benzene-methanol.
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186.Increasing the temperature of an aqueous solution will cause.
decrease in molarity
decrease in molality
decrease in mole fraction
decrease in % (w / W)
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187.When mango is placed in aqueous solution of hydrochloric acid, it
Shrinks
Swells
Bursts
Nothing happens
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188.Which of the following does not show positive deviation from Raoult’s low?
Benzene-chlorofrom
Benzene-acetone
Benzene-ethanol
Benzene-carbon tetrachloride
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189.
Depression in freezing point is directly proportional to
True Or False
Multiple Choice Questions
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