S-Block Elements Group 1 and 2 (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry): Questions 42 - 47 of 49

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Question number: 42

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

MCQ▾

Question

The substance not likely to contain CaCO 3?

Choices

Choice (4) Response

a.

Marble statue

b.

Seashell

c.

Dolomite

d.

Calcined gypsum

Question number: 43

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

MCQ▾

Question

A substance which gives a brick red flame and breaks down on heating giving oxygen and a brown gas is?

Choices

Choice (4) Response

a.

Magnesium nitrite

b.

Calcium carbonate

c.

Calcium nitrite

d.

Magnesium carbonate

Question number: 44

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

MCQ▾

Question

Identify the correct statement?

Choices

Choice (4) Response

a.

Gypsum is not a natural product. It is obtained by heating of plaster of Paris.

b.

The percentage of calcium is lower in gypsum in comparison to plaster of Paris.

c.

Plaster of Paris is obtained by hydration of gypsum.

d.

Plaster of Paris is formed by oxidation of gypsum.

Question number: 45

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

MCQ▾

Question

The second ionization enthalpies of alkali metals are higher than corresponding alkaline earth metals, why?

Choices

Choice (4) Response

a.

electrons are loosely held towards nucleus

b.

electrons are tightly held towards nucleus

c.

because of increase in atomic size

d.

one can’t predict the exact reason

Question number: 46

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

MCQ▾

Question

The electrolyte used in Castner’s process of sodium extraction is?

Choices

Choice (4) Response

a.

anhydrous

b.

c.

fused anhydrous

d.

aqueous

Question number: 47

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

MCQ▾

Question

Arrange the motilities of alkali metal ions in aqueous solution?

Choices

Choice (4) Response

a.

L i + < N a + < K + < R b +

b.

c.

d.

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