Science Content-Basic Chemistry (CTET Paper-II Science): Questions 11 - 15 of 31

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Question number: 11

» Science Content » Basic Chemistry

Appeared in Year: 2011

MCQ▾

Question

The greenhouse effect, which is causing an increase in the atmospheric temperature, is mainly due to (June)

Choices

Choice (4) Response

a.

Sulphur

b.

Carbon dioxide

c.

Oxygen

d.

Nitrogen

Question number: 12

» Science Content » Basic Chemistry

Appeared in Year: 2012

MCQ▾

Question

The process of converting sugars into alcohols is known as

(Jan)

Choices

Choice (4) Response

a.

Sterilization

b.

Homogenization

c.

Pasteurization

d.

Fermentation

Question number: 13

» Science Content » Basic Chemistry

Appeared in Year: 2011

MCQ▾

Question

When an iron nail is dipped in copper sulphate solution, the colour of copper sulphate solution fades and a brownish layer is deposited over the iron nail. This is an example of (June)

Choices

Choice (4) Response

a.

Decomposition reaction

b.

Double displacement reaction

c.

Combination reaction

d.

Displacement and redox reactions

Question number: 14

» Science Content » Basic Chemistry

Appeared in Year: 2011

MCQ▾

Question

The inner surfaces of food cans are coated with tin and not with zinc because (June)

Choices

Choice (4) Response

a.

Zinc is more reactive than tin

b.

Zinc is costlier than tin

c.

Zinc has a higher melting point than tin

d.

Zinc is less reactive than tin

Question number: 15

» Science Content » Basic Chemistry

MCQ▾

Question

The process of converting alcohol and acid into Easter is called

Choices

Choice (4) Response

a.

Esterification

b.

Transesterification

c.

Carbonylation

d.

Question does not provide sufficient data or is vague

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