NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 399 - 405 of 1195

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Question number: 399

» Hydrogen » Structure, Preparation, Reactions and Uses of Hydrogen Peroxide

MCQ▾

Question

20 ml of a sample of H2O2 gives 400 ml of oxygen measured at NTP. The sample should be labeled as:

Choices

Choice (4) Response

a.

Dil. H2O2

b.

20 vol. H2O2

c.

Anhydrous H2O2

d.

5 vol. H2O2

Question number: 400

» Hydrogen » Physical and Chemical Properties of Water

MCQ▾

Question

Hard water is not suitable for washing clothes because?

Choices

Choice (4) Response

a.

It is acidic in nature

b.

It contains Na2SO4 and KCl

c.

It contains impurities

d.

It gives insoluble precipitates

Question number: 401

» States of Matter » Gaseous State » Concept of Average, Root Mean Square and Most Probable Velocities

MCQ▾

Question

Oxygen at 1 atmosphere and 0℃ has a density of 1.4290 g L-1. Find the rms speed of oxygen molecule?

Choices

Choice (4) Response

a.

34.52

b.

345.2

c.

46.11

d.

461.15

Question number: 402

» Hydrogen » Preparation, Properties and Uses of Hydrogen

MCQ▾

Question

2 g of aluminum is treated separately with excess of dilute sulphuric acid and excess of NaOH. The ratio of volumes of hydrogen evolved under similar conditions of pressure and temperature is?

Choices

Choice (4) Response

a.

3: 1

b.

2: 1

c.

1: 3

d.

1: 1

Question number: 403

» States of Matter » Gaseous State » Van Der Waals Equation

MCQ▾

Question

The units of “a” in Vander Waal’s equation is?

Choices

Choice (4) Response

a.

atom litre2mol-1

b.

atom litre 2 mol-2

c.

atom litre mol-2

d.

atom litre mol-1

Question number: 404

» Atomic Structure » Hund's Rule

MCQ▾

Question

The total spin resulting from a d7 configuration is –

Choices

Choice (4) Response

a.

2

b.

c.

1

d.

Question number: 405

» Hydrogen » Physical and Chemical Properties of Water

MCQ▾

Question

Water can extinguish most fires but not petrol fire, because?

Choices

Choice (4) Response

a.

water is lighter than petrol

b.

petrol is lighter than water

c.

Hydrogen bonding

d.

None of the above

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