Which one of the following is not a characteristic of a compound?

Which one of the following is not a characteristic of a compound?

Composition is variable.

All particles of compound are of only one type.

Particles of compound have two or more elements.

Its constituents cannot be separated by simple physical methods.

Answer is Right!

Answer is Wrong!

This question was previously asked in

UPSC CDS-1 – 2018

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A compound is a pure substance formed when two or more different elements are chemically bonded together in a fixed ratio. Therefore, the composition of a compound is constant and definite, not variable. Mixtures, on the other hand, have variable compositions.

A defining characteristic of a compound is its fixed and definite composition by mass.

Other characteristics of compounds include that all particles (molecules or formula units) are identical, they contain atoms of two or more elements chemically joined, and their constituent elements lose their individual properties when forming the compound. The elements in a compound can only be separated by chemical means, not simple physical methods.

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