Study the information given below:
1) Some substances are made up of two or more elements combined together chemically.
2) Properties of these substances are different from their constituent elements.
3) These substances cannot be broken down by physical methods.
Which of the following represent the properties listed above?

Iodine

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Calcium

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Air

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Sugar

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Solution

The correct option is D
Sugar

The three given properties are those of compounds. In the given options, sugar is a compound. It is made up of carbon, hydrogen and oxygen, $C_{12} H_{22} O_{11}$ . Iodine (I) and calcium (Ca) are pure elements while air is a mixture of gases like oxygen, nitrogen, carbon dioxide, hydrogen and water vapour.

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