NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 143 - 148 of 1259

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Question number: 143

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

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MCQ▾

Question

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

Choices

Choice (4)Response

a.

Electrolytic process

b.

Nelson process

c.

Le-Blancs process

d.

Lowig’s process

Question number: 144

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

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MCQ▾

Question

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

Choices

Choice (4)Response

a.

6 electrons

b.

1 electron

c.

8 electrons

d.

3 electrons

Question number: 145

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

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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: 146

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

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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 carbonate

b.

Magnesium nitrite

c.

Calcium carbonate

d.

Calcium nitrite

Question number: 147

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

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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 formed by oxidation of gypsum.

d.

Plaster of Paris is obtained by hydration of gypsum.

Question number: 148

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

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MCQ▾

Question

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

Choices

Choice (4)Response

a.

because of increase in atomic size

b.

electrons are loosely held towards nucleus

c.

one can’t predict the exact reason

d.

electrons are tightly held towards nucleus

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