NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 107 - 112 of 1258

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Question number: 107

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

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MCQ▾

Question

Which of the following compounds of alkali metals decompose on heating?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 108

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

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MCQ▾

Question

Lithium shows anomalous property when compared to other alkali metals, why?

Choices

Choice (4) Response

a.

Small size of lithium atom and Li +

b.

Greater hardness of Li +3

c.

Hydration of Li +3

d.

None of the above

Question number: 109

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

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Question

Which of the following statement is not true regarding the properties of alkali metal?

Choices

Choice (4) Response

a.

Halides and hydrides of beryllium do not polymerize

b.

BeO insoluble, but BaSO 4 is soluble in water

c.

Alkali earth metals can’t be obtain by chemical reduction

d.

BaO is soluble, but BaSO 4 is insoluble in water

Question number: 110

» S-Block Elements Group 1 and 2 » Industrial Uses » Plaster of Paris

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Question

Addition of alum to plaster of Paris makes the setting very hard. The mixture is known as?

Choices

Choice (4) Response

a.

Dead plaster

b.

Burnt plaster

c.

Keene cement

d.

Chalk

Question number: 111

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

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Question

Which pair of following chloride do not impart colour to the flame?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 112

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

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Question

A metal M readily forms water soluble sulphate water insoluble hydroxide and oxide which becomes inert on heating. The hydroxide is soluble in Then M is?

Choices

Choice (4) Response

a.

Calcium

b.

Strontium

c.

Beryllium

d.

Magnesium