NEET Chemistry: Questions 148 - 153 of 677

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Question number: 148

» 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: 149

» 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 Na2CO3

b.

NaCl+Na2CO3

c.

fused anhydrous NaOH

d.

aqueous NaOH

Question number: 150

» 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.

Na+>Li+>K+>Rb+

c.

Li+>Na+>K+>Rb+

d.

Na+<Li+<K+<Rb+

Question number: 151

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

MCQ▾

Question

Which of the following alkali metal has lowest density?

Choices

Choice (4) Response

a.

Strontium

b.

Magnesium

c.

Calcium

d.

Beryllium

Question number: 152

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

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Solvay process

b.

Nessler’s process

c.

Contact process

d.

Kolbe’s process

Question number: 153

» D and F Block Elements » Transition Elements » Trends in Properties

MCQ▾

Question

Which of the following metal ion has maximum ionic radii?

Choices

Choice (4) Response

a.

Ni+3

b.

Mn+3

c.

Mn+2

d.

Ni+2

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