NSO Level 1- Science Olympiad (SOF) Class 9: Questions 396 - 399 of 1123

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Question number: 396

» Chemistry » Matter

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MCQ▾

Question

On a cold day in winter you see fog in the morning. As the sun rises up it melts away. How will you explain this?

Choices

Choice (4) Response

a.

The fog is due to cold gases in the atmosphere. They disappear as the sun rises up.

b.

The fog is due to water vapour present in the atmosphere. The vapour changes to water droplets when the sun rises up.

c.

The fog is due to the presence of water droplets in the atmosphere. The water evaporates as the sun rises up.

d.

Question does not provide sufficient data or is vague

Question number: 397

» Biology » Health & Diseases

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MCQ▾

Question

The cholera-causing microbes will enter new hosts through

Choices

Choice (4) Response

a.

Water

b.

Air

c.

Soil

d.

Question does not provide sufficient data or is vague

Question number: 398

» Biology » Diversity of Living Organisms

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MCQ▾

Question

To which kingdom does the organism in the picture belong to?

Image of spongilla

Image of Spongilla

Image of spongilla

Choices

Choice (4) Response

a.

Mollusca

b.

Arthropoda

c.

Platyhelminthis

d.

Porifera

Question number: 399

» Chemistry » The Nature of Matter

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MCQ▾

Question

While separating the components of air in a fractional distillation column, which of the following gas is distilled first?

Table shows the components of air

Table shows the components of air

Name of the gas

Boiling point

Oxygen

-183°C

Nitrogen

-195.8°C

Argon

-185.8°C

Carbon dioxide

-78.5°C

Choices

Choice (4) Response

a.

Oxygen

b.

Argon

c.

Carbon dioxide

d.

Nitrogen

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