Which of the following is not an example of a compound?

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Sulphuric dioxide

Chalk

Lead

Sulphuric acid

answer is C.

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Detailed Solution

Lead is not an example of a compound.
Lead is an element and it is made of only one similar type of atom. On the other hand, compounds are made up of different atoms in a fixed ratio. For example sulphuric acid(

H_{2} S O_{4}

), calcium carbonate (

{CaCO}_{3}

) sulphur dioxide (

{SO}_{2}

) are compounds whereas lead (

Pb

) is an element. Compounds are formed by the sharing of electrons with each of the different atoms present in it.

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