S-Block Elements Group 1 and 2 (NEET (National Eligibility cum Medical Entrance Test) Chemistry): Questions 39 - 45 of 49

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Question number: 39

» S-Block Elements Group 1 and 2 » Biological Significance of Na, K, Mg and Ca

MCQ▾

Question

Which of the following magnesium compound is used as antacid in medicine?

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 40

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

MCQ▾

Question

Which of the following process is used for preparation of Pearl ash?

Choices

Choice (4) Response

a.

Le-Blancs process

b.

Nelson process

c.

Electrolytic process

d.

Lowig’s process

Question number: 41

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

MCQ▾

Question

How many electrons will be there in penultimate shell of potassium?

Choices

Choice (4) Response

a.

3 electrons

b.

8 electrons

c.

6 electrons

d.

1 electron

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

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