S-Block Elements Group 1 and 2 (NEET Chemistry): Questions 19 - 25 of 49

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Question number: 19

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

MCQ▾

Question

Which category of salts of alkaline earth metals is not found in solid state but known in solution?

Choices

Choice (4) Response

a.

Bicarbonates

b.

Sulphates

c.

Hydroxides

d.

Carbonates

Question number: 20

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

MCQ▾

Question

When a piece of magnesium ribbon was heated to redness in an atmosphere of nitrogen and on cooling water was added, the gas evolved is?

Choices

Choice (4) Response

a.

Nitrogen

b.

Hydrogen

c.

Oxygen

d.

Ammonia

Question number: 21

» S-Block Elements Group 1 and 2 » Electronic Configuration

MCQ▾

Question

The alkali metal used in automotive grease is?

Choices

Choice (4) Response

a.

Lithium

b.

Magnesium

c.

Calcium

d.

Potassium

Question number: 22

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

MCQ▾

Question

What is the formula of bleaching powder?

Choices

Choice (4) Response

a.

Ca2(OCl2)

b.

CaCl2

c.

CaCl2

d.

Ca(OCl)Cl

Question number: 23

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

MCQ▾

Question

If CO 2 is passed in excess into lime water, the milkiness first formed disappears due to?

Choices

Choice (4) Response

a.

reversal of original reaction

b.

formation of soluble calcium carbonate

c.

formation of volatile calcium derivative

d.

formation of soluble magnesium hydroxide

Question number: 24

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

MCQ▾

Question

What will the product when dry ammonia is passed over sodium at 400 0 C in absence of air?

Choices

Choice (4) Response

a.

NaH+NH3

b.

NaOH+NH3

c.

NaNH2

d.

NaH

Question number: 25

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

MCQ▾

Question

Mortar is mixture of?

Choices

Choice (4) Response

a.

CaCO3 and SiO2

b.

CaO and silica

c.

CaCO3 , SiO2 water

d.

Ca(OH)2 , silica, water

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