Chemistry (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 101 - 105 of 144

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Question number: 101

» Chemistry » Periodic Classification of Elements

MCQ▾

Question

Which of the following pairs of elements represents a mole ratio of 1: 1?

Choices

Choice (4) Response

a.

20 g of C and 12 g of C

b.

20 g of Ca and 20 g of Na

c.

12 g of Mg and 6 g of C

d.

10 g of C and 12 g of Mg

Question number: 102

» Chemistry » Acid Bases and Salt

MCQ▾

Question

The salt whose aqueous solution will have no effect on either red or blue litmus paper is

Choices

Choice (4) Response

a.

Ammonium sulphate

b.

Sodium carbonate

c.

Potassium sulphate

d.

Sodium acetate

Question number: 103

» Chemistry » Metals & Non Metals

MCQ▾

Question

Which of the following are metals, non-metals and metalloids?

V, K, Ge, Br

Choices

Choice (4) Response

a.

V, K, Br are not metals

b.

V, K are metals, Br is non-metal while Ge is metalloid

c.

V, K, Br are metals,

d.

Br is metal, K, V is non-metal, Ge is metalloid

Question number: 104

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Electron-dot structure of F2 molecule is

Choices

Choice (4) Response

a.

Electron dot structure of F2 – Choice A

Electron Dot Structure of F2 – Choice A

Explaining the electron dot structure of Fluorine

b.

Electron dot structure of F2 – Choice B

Electron Dot Structure of F2 – Choice B

Explaining the electron dot structure of Fluorine

c.

Electron dot structure of F2 – Choice C

Electron Dot Structure of F2 – Choice C

Explaining the electron dot structure of Fluorine

d.

Electron dot structure of F2 – Choice D

Electron Dot Structure of F2 – Choice D

Explaining the electron dot structure of Fluorine

Question number: 105

» Chemistry » Carbon and Its Compounds

MCQ▾

Question

In a buck minster fullerene, the number of carbon atoms joined in its spherical molecule, are

Choices

Choice (4) Response

a.

Forty

b.

Seventy

c.

Fifty

d.

Sixty

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