1

AIEEE 2012

MCQ (Single Correct Answer)

+4

-1

K

_{f}for water is 1.86K kg mol^{–1}. If your automobile radiator holds 1.0 kg of water, how many grams of ethylene glycol (C_{2}H_{6}O_{2}) must you add to get the freezing point of the solution lowered to –2.8^{o}C ?2

AIEEE 2011

MCQ (Single Correct Answer)

+4

-1

The degree of dissociation ($$\alpha$$ ) of a weak electrolyte, A

_{x}B_{y}is related to van’t Hoff factor (i) by the expression :3

AIEEE 2011

MCQ (Single Correct Answer)

+4

-1

Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be
added to 4 kg of water to prevent it from freezing at −6

^{o}C will be : [K_{f}for water = 1.86 K kg mol^{−1}, and molar mass of ethylene glycol = 62 g mol^{−1})4

AIEEE 2010

MCQ (Single Correct Answer)

+4

-1

If sodium sulphate is considered to be completely dissociated into cations and anions in aqueous
solution, the change in freezing point of water (∆T

_{f}), when 0.01 mol of sodium sulphate is dissolved in 1 kg of water, is (K_{f}= 1.86 K kg mol^{–1})Questions Asked from Solutions (MCQ (Single Correct Answer))

Number in Brackets after Paper Indicates No. of Questions

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