NEET Chemistry: Questions 258 - 263 of 677

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Question number: 258

» Basic Concepts in Chemistry » Molar Mass

MCQ▾

Question

The equivalent weight of a metal is 36. What weight of the metal would give 9.322 gm of its chloride?

Choices

Choice (4) Response
a.

1.6935 gm

b.

4.6935 gm

c.

3.6935 gm

d.

2.6935 gm

Question number: 259

» P-Block Elements Group 13 to 18 » Group 18 » Noble Gases

MCQ▾

Question

In Ramsay and Rayleigh’s isolation of noble gases from air, the nitrogen of the air is finally converted into?

Choices

Choice (4) Response
a.

NOandNO2

b.

NaNO3

c.

NaNO3 and NaNO2

d.

NaNO2

Question number: 260

» P-Block Elements Group 13 to 18 » Group 18 » Introduction

MCQ▾

Question

The first noble gas compound obtained was?

Choices

Choice (4) Response
a.

XeF4

b.

XeF2

c.

XePtF6

d.

XeOF4

Question number: 261

» Basic Concepts in Chemistry » Empirical and Molecular Formulae

MCQ▾

Question

What weight of H2C2O4.2H2O (mol. wt. =126) should be dissolved to prepare 250 ml of semi normal to be used as a reducing agent?

Choices

Choice (4) Response
a.

0.1575 gm

b.

0.63 gm

c.

0.875 gm

d.

0.126 gm

Question number: 262

» Atomic Structure » Heisenberg Uncertainty Principle

MCQ▾

Question

what will be the uncertainty in velocity of a cricket ball if its uncertainty in position is of order of 1Å.

(If mass = 0.15kg)

Choices

Choice (4) Response
a.

2.22 ×1028 m/s

b.

3.51 ×1024 m/s

c.

2.22 ×1024 m/s

d.

3.51 ×1028 m/s

Question number: 263

» P-Block Elements Group 13 to 18 » Group 17 » Oxides and Oxoacids of Halogens

MCQ▾

Question

When blue litmus is dipped into a solution of Hypochlorous acid, it first turns red and then later gets decolorized, why?

Choices

Choice (4) Response
a.

HClO is reducing agent

b.

HClO is an acid

c.

HClO is a base

d. Both a. and c. are correct

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