NEET (National Eligibility cum Medical Entrance Test) Chemistry: Questions 397 - 402 of 1145

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Question number: 397

» Hydrocarbons » Alkanes » Introduction

MCQ▾

Question

A chemical process of getting molecular weight of A and B

A Chemical Process of Getting Molecular Weight of a and B

Showing uncompleted chemical process of getting molecular weight of A and B

The ratio of molecular weight of A and B is-

Choices

Choice (4) Response

a.

≈ 4

b.

≈ 1

c.

≈ 2

d.

≈ 3

Question number: 398

» Hydrogen » Preparation, Properties and Uses of Hydrogen

MCQ▾

Question

When sodium hydride in fused state is electrolyzed, hydrogen will be evolved at?

Choices

Choice (4) Response

a.

Electrolyte

b.

Cathode

c.

Anode

d.

None of the above

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 Equation

b.

345.2 Equation

c.

46.11 Equation

d.

461.15 Equation

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

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