S-Block Elements Group 1 and 2 (JEE (Based on NTA Guidelines-IIT Engg.) Mains Chemistry): Questions 1 - 6 of 60

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Question number: 1

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

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Appeared in Year: 2018

MCQ▾

Question

Sodium dissolved in ammonia has blue colour due to (NEET)

Choices

Choice (4) Response

a.

Lone pair of electrons on Nitrogen in molecule

b.

Solvated sodium

c.

Solvated electron

d.

Amide ion

Question number: 2

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

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Appeared in Year: 2014

MCQ▾

Question

Which one of the following elements is unable to form ion? (CSIR December)

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 3

» S-Block Elements Group 1 and 2 » Industrial Uses » Lime

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MCQ▾

Question

Photoelectric effect is maximum in

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 4

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

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Assertion-Reason▾

Question

Assertion (Ꭺ)

Anhydrous is used for preparing .

Reason (Ꭱ)

Hydrated is not available.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are false

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Ꭺ is false but Ꭱ is true

Question number: 5

» S-Block Elements Group 1 and 2 » Diagonal Relationships

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MCQ▾

Question

On dissolving moderate amount of sodium metal in liquid at low temperature, which one of the following does not occur

Choices

Choice (4) Response

a.

Blue coloured solution is obtained

b.

ions are formed in the solution

c.

Liquid ammonia remains diamagnetic

d.

Liquid becomes good conductor of electricity

Question number: 6

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

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MCQ▾

Question

Which of the following statements are correct?

(1) The heats of hydration of the dispositive alkaline earth metal ions decrease witii increase in their ionic size.

(2) Hydration of alkali metal ions is less than that of alkaline earth metals.

(3) Alkaline earth metal ions, because of their much larger charge to size ratio, exert a much stronger electrostatic attraction on the oxygen of water molecule surrounding them.

(4) All the oxides of alkaline earth metals are amphoteric in nature.

Choices

Choice (4) Response

a.

1 and 2 are correct

b.

1 and 3 are correct

c.

2 and 4 are correct

d.

1,2 and 3 are correct

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