NSO Level 1- Science Olympiad (SOF) Class 8: Questions 545 - 550 of 1076

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Question number: 545

» Reproduction in Animals

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MCQ▾

Question

Which of the following is not a single cell?

Choices

Choice (4) Response

a.

Zygote

b.

Sperm

c.

Embryo

d.

Ovum

Question number: 546

» Reproduction in Animals

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MCQ▾

Question

Fusion of male and female gametes inside the female body is called

Choices

Choice (4) Response

a.

External fertilisation

b.

False fertilisation

c.

Internal fertilisation

d.

None of the above

Question number: 547

» Combustion and Flame

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MCQ▾

Question

While cooking on Chulha, the outer side of the vessels become black. This never happens with an LPG stove. The reason is

Choices

Choice (4) Response

a.

LPG is considered as a clean fuel

b.

LPG undergo complete combustion.

c.

Due to the production of soot

d.

All a. , b. and c. are correct

Question number: 548

» Combustion and Flame

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MCQ▾

Question

Here are the characteristics of a fuel. Identify the fuel.

  1. It is in solid state

  2. It is black in colour

  3. It produces soot on burning

  4. It is obtained from mines

Choices

Choice (4) Response

a.

Coal

b.

Wood

c.

Charcoal

d.

Question does not provide sufficient data or is vague

Question number: 549

» Combustion and Flame

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MCQ▾

Question

Which of the following gas is a cause of acid rain?

Choices

Choice (4) Response

a.

Sulphur dioxide

b.

Nitric oxide

c.

Carbon dioxide

d.

Both a. and b. are correct

Question number: 550

» Combustion and Flame

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MCQ▾

Question

In big cities, vehicles run on petrol and diesel are replaced by CNG vehicles. The reason is

Choices

Choice (4) Response

a.

CNG is a clean fuel

b.

It does not produce harmful gases on combustion

c.

Both a. and b. are correct

d.

None of the above

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