NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 1139 - 1144 of 1258

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Question number: 1139

» Solutions » Depression of Freezing Point

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Question

On dissolving 0.25g of a non-volatile substance in 30ml benzene (density 0.8g/ml) its freezing point decrease by . Calculate the molecular mass of non-volatile substance

Choices

Choice (4) Response

a.

134.3

b.

143.2

c.

131.4

d.

133.3

Question number: 1140

» Solutions » Determine Molecular Mass Using Colligative Properties

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Question

The osmotic pressure of a solution of an organic substance containing 18g in the 1 liter of solution at 293K is 2.414 . Find the molecular mass of substance if

Choices

Choice (4) Response

a.

302.16

b.

192.24

c.

206.24

d.

181.33

Question number: 1141

» Solutions » Osmotic Pressure

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Question

Find the osmotic pressure of solution of urea at

Choices

Choice (4) Response

a.

12.315 atm

b.

123.15 atm

c.

0.1213 atm

d.

1.2315 atm

Question number: 1142

» Solutions » Osmotic Pressure

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Question

The solution containing 10g of an organic compound per liter showed an osmotic pressure of 1.18 atm as Calculate the molecular mass of the compound?

Choices

Choice (4) Response

a.

189.94

b.

202.33

c.

192.36

d.

204.46

Question number: 1143

» Solutions » Osmotic Pressure

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MCQ▾

Question

Calculate the osmotic pressure of solution of cane sugar (sucrose) at ?

Choices

Choice (4) Response

a.

4.62 atm

b.

3.453 atm

c.

2.92 atm

d.

9.33 atm

Question number: 1144

» Solutions » Depression of Freezing Point

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Question

By dissolving 13.6g of a substance is 20g of water, the freezing point decreased by Calculate the molecular mass of substance (molal depression constant for water )

Choices

Choice (4) Response

a.

339.42

b.

342.39

c.

345.32

d.

324.24