NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 147 - 152 of 1258

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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

Question number: 149

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

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MCQ▾

Question

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

Choices

Choice (4) Response

a.

fused anhydrous

b.

anhydrous

c.

d.

aqueous

Question number: 150

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

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MCQ▾

Question

Arrange the motilities of alkali metal ions in aqueous solution?

Choices

Choice (4) Response

a.

b.

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

c.

d.

Question number: 151

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

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MCQ▾

Question

Which of the following alkali metal has lowest density?

Choices

Choice (4) Response

a.

Beryllium

b.

Magnesium

c.

Strontium

d.

Calcium

Question number: 152

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

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MCQ▾

Question

Which of the following process is used for the preparation of sodium carbonate

Choices

Choice (4) Response

a.

Kolbe’s process

b.

Solvay process

c.

Nessler’s process

d.

Contact process