NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 1129 - 1135 of 1258

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Question number: 1129

» Solutions » Osmotic Pressure

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MCQ▾

Question

Which of the following is an expression for pressure temperature law and Gay-lussac-van’t Hoff’s law?

Choices

Choice (4)Response

a.

b.

c.

PV = ST

d.

PV = constant

Question number: 1130

» Solutions » Osmotic Pressure

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MCQ▾

Question

200 of an aqueous solution contains 1.26g of a polymer. The osmotic pressure of such solution at 300 K is found to be bar. Calculate the molar mass of the polymer?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1131

» Solutions » Depression of Freezing Point

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MCQ▾

Question

A solution of 1.25g of contain non-volatile substance in 20g of water freezes at 271.94K. Calculate the molecular mass of the solute (if =1.86 k kg

Choices

Choice (4)Response

a.

109.66

b.

202.42

c.

209.73

d.

102.70

Question number: 1132

» Solutions » Elevation of Boiling Point

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MCQ▾

Question

An aqueous solution freezes at the elevation of boiling point of the solution is?

Choices

Choice (4)Response

a.

0.512

b.

c.

0.0512

d.

0.186

Question number: 1133

» Solutions » Depression of Freezing Point

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MCQ▾

Question

Calculate the molal depression of constant of a solvent which has freezing point and latent heat of fusion 180.75?

Choices

Choice (4)Response

a.

3.86

b.

8.23

c.

4.03

d.

6.24

Question number: 1134

» Solutions » Vapour Pressure of Solutions

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MCQ▾

Question

What is the vapour pressure of solution containing 34.29 of sucrose per 100 g of water as ? The vapour pressure of water at is 23.75 mm?

Choices

Choice (4)Response

a.

23.10 mm

b.

20.3 mm

c.

Unpredictable

d.

23.33 mm

Question number: 1135

» Solutions » Determine Molecular Mass Using Colligative Properties

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MCQ▾

Question

A 5 % solution of cane sugar is isotonic with 0.877 % solution of urea. Calculate the molecular mass of urea if the molecular mass of cane sugar is 342?

Choices

Choice (4)Response

a.

39.20

b.

60.26

c.

22.34

d.

59.98

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