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Q.

Is it true that the smallest unit of gold is an atom and that of water is a molecule?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
Smallest unit of gold is an atom and that of water is a molecule. On the basis of composition matter is classified into two types : pure and impure substances. Pure substances are those which are made up of only one type of particle. These are further of two types : Elements and Compound. Gold is an element because it is made up of only one type of atom. Its smallest and the basic unit is an atom. Water is a molecule in which different elements are combined in a fixed ratio. Its smallest unit is a molecule. Combination of atoms is known as molecules.
 
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Is it true that the smallest unit of gold is an atom and that of water is a molecule?