NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 140 - 146 of 1258

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Question number: 140

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

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MCQ▾

Question

Sodium is heated in air at 350 0 C to form X, X absorbs CO 2 and forms sodium carbonate and Y. Which of these following is Y. ?

Choices

Choice (4) Response

a.

b.

O 3

c.

d.

Question number: 141

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

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MCQ▾

Question

Why BaSO 4 is insoluble where as BeSO 4 is soluble in water?

Choices

Choice (4) Response

a.

Hydration energy of BeSO 4 is less than its lattice energy

b.

Hydration energy of BaSO 4 is less than its lattice energy

c.

Hydration energy of BaSO 4 is more than its lattice energy

d.

Hydration energy of BaSO 4 is equal to lattice energy

Question number: 142

» S-Block Elements Group 1 and 2 » Biological Significance of Na, K, Mg and Ca

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MCQ▾

Question

Which of the following magnesium compound is used as antacid in medicine?

Choices

Choice (4) Response

a.

b.

c.

d.

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