Science-Class-10 NCERT (NCERT Based General Studies (GS)): Questions 1 - 6 of 566

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Question number: 1

» Science » Class-10 NCERT » Life Processes (Respiration)

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MCQ▾

Question

In human respiratory system air is warmed and moistened in:

Choices

Choice (4) Response

a.

Nostrils

b.

Nasal cavity

c.

Pharynx

d.

Question does not provide sufficient data or is vague

Question number: 2

» Science » Class-10 NCERT » Chemical Reactions and Equation (Oxidation Reactions)

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MCQ▾

Question

Slow destruction of metal due to their interaction with the environment is called as:

Choices

Choice (4) Response

a.

Decomposition

b.

Corrosion

c.

Rancidity

d.

Precipitation

Question number: 3

» Science » Class-10 NCERT » Chemical Reactions and Equation (Chemical Equations)

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MCQ▾

Question

The chemical reactions in which heat is absorbed are called as:

Choices

Choice (4) Response

a.

Reactions with –Heat term on product side

b.

Endothermic reactions

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

Question number: 4

» Science » Class-10 NCERT » Acids, Bases and Salts (Salts)

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MCQ▾

Question

Common salt acts as a raw material for number of chemicals such as:

Choices

Choice (4) Response

a.

Sodium Hydrogen carbonate

AND

Sodium carbonate

b.

Bleaching Powder

c.

Sodium Hydroxide

d.

All a. , b. and c. are correct

Question number: 5

» Science » Class-10 NCERT » Chemical Reactions and Equation (Chemical Equations)

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MCQ▾

Question

Concentration of the reactants is denoted by the:

Choices

Choice (4) Response

a.

Fast or slow

b.

Conc. (for concentration)

c.

dil. (for dilute)

d.

Both b. and c. are correct

Question number: 6

» Science » Class-10 NCERT » Acids, Bases and Salts (Chemical Properties of Acids and Bases)

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MCQ▾

Question

When dilute Hydrochloric acid added to copper oxide in a beaker:

Choices

Choice (4) Response

a.

Colour of solution becomes blue green

b.

Copper II chloride formed in reaction

c.

Copper oxide dissolves

d.

All a. , b. and c. are correct