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Elements

What will hap...

Question

What will happen to most of the matter that is heated?

A

It expands

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B

It contracts

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C

It remains the same

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D

It changes color

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Solution

The correct option is A
It expands

Most of the matter expands on heating and contracts on cooling.

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Similar questions

Q. What is the smallest constituent of matter that retains its chemical identity?

Q. If the earth suddenly contracts so that its radius reduces

4

% with mass remaining same, then what will happen to the escape velocity from earth's surface now?

Water is cooled from $4^{\circ} C t o 0^{\circ} C$ . It :

(a) contracts (b) expands

(c) first contracts, then expands

(d) first expands, then contracts.

Q. Paraphrase the given lines from the passage:
Imagine then that the gas is somehow disturbed so that one, small, spherical region becomes a little denser than the gas around it so that the small region's gravitational field becomes slightly stronger. It now attracts more matter to it and its gravity increases further, causing it to begin to contract. As it contracts its density increases which increases its gravity even more so that it picks up even more matter and contracts even further.

On heating a metal it contracts while on cooling it expands.

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