NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 114 - 120 of 1195

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Question number: 114

» S-Block Elements Group 1 and 2 » Preparation and Properties » Sodium Carbonate

MCQ▾

Question

Magnesium chloride exists as MgCl 2. 6H 2 O, but sodium chloride exists as . Why?

Choices

Choice (4) Response

a.

hydration energies of alkaline earth metals are higher

b.

Because of + 2 oxidation state.

c.

alkaline earth metals are more electropositive

d.

lower hydration energies of alkaline earth metals

Question number: 115

» S-Block Elements Group 1 and 2 » Anomalous Properties of the First Element of Each Group

MCQ▾

Question

Which of the following has the tendency to form covalent compounds?

Choices

Choice (4) Response

a.

Strontium

b.

Beryllium

c.

Magnesium

d.

Calcium

Question number: 116

» S-Block Elements Group 1 and 2 » Anomalous Properties of the First Element of Each Group

MCQ▾

Question

Li has following abnormal behavior in its group?

Choices

Choice (4) Response

a.

is covalent in nature

b.

is stable compound

c.

is poor conductor of electricity in molten state

d.

Lithium carbonate decomposes into its oxide on heating unlike other metals

Question number: 117

» S-Block Elements Group 1 and 2 » Industrial Uses » Cement

MCQ▾

Question

What is composition of Duralumin?

Choices

Choice (4) Response

a.

5 % Al + 0.5 % Mg + 0.5 % Mn + 94 % Cu

b.

90 % Al + 0.5 % Mg + 0.5 % Mn + 4% Cu

c.

95 % Al + 0.5 % Mg + 0.5 % Mn + 4% Cu

d.

65 % Al + 0.5 % Mg + 25 % Mn + 4.5 % Cu

Question number: 118

» S-Block Elements Group 1 and 2 » Trends in Physical and Chemical Properties

MCQ▾

Question

Which one of the following alkali metal is strong reducing agent?

Choices

Choice (4) Response

a.

k

b.

Cs

c.

Mg

d.

Question number: 119

» S-Block Elements Group 1 and 2 » General Introduction

MCQ▾

Question

Which of the following alkali metal is diamagnetic in nature?

Choices

Choice (4) Response

a.

b.

c.

K

d.

Mg

Question number: 120

» S-Block Elements Group 1 and 2 » Trends in Physical and Chemical Properties

MCQ▾

Question

Which one of the following oxide of alkali metal is used as refractory material?

Choices

Choice (4) Response

a.

b.

c.

d.

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