NSO Level 1- Science Olympiad (SOF) Class 7: Questions 259 - 264 of 597

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Question number: 259

» Acids, Bases and Salts

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MCQ▾

Question

Litmus is extracted from which of the following?

Choices

Choice (4)Response

a.

Vanilla

b.

Beet root

c.

Lichen

d.

China rose

Question number: 260

» Physical and Chemical Changes

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MCQ▾

Question

Changes in the physical properties of a substance are called.

Choices

Choice (4)Response

a.

Chemical changes.

b.

No change.

c.

Biological Changes.

d.

Physical changes.

Question number: 261

» Heat

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MCQ▾

Question

In the given image pan has boiling water. This is example of which of the following?

Image of the boiling water in a pot

Image of the Boiling Water in a Pot

Choices

Choice (4)Response

a.

Conduction of heat from pan to water.

b.

Convection of heat within water.

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

Question number: 262

» Heat

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MCQ▾

Question

Which of the following is the fourth state of a matter where other three are, solid, liquid and gas?

Choices

Choice (4)Response

a.

Sun

b.

Plasma

c.

Helium

d.

Question does not provide sufficient data or is vague

Question number: 263

» Heat

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MCQ▾

Question

What moves faster in the matter when it gets warmer? Select the correct option.

Choices

Choice (4)Response

a.

Electrons

b.

Atoms and molecules

c.

Only molecules

d.

Question does not provide sufficient data or is vague

Question number: 264

» Acids, Bases and Salts

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MCQ▾

Question

HCl is present in the stomach. However, presence of access of HCl causes indigestion. Which of the following is taken to undo the effect of HCl?

Choices

Choice (4)Response

a.

Vinegar

b.

Milk of magnesia

c.

Line water

d.

None of the above

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