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Question

Statement-1: Both CO2 and H2O are molecules.
Statement-2: A molecule always contain atoms of the same elements.

A
Both the statements are true, and statement 2 is the corrent explaination for statement 1
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B
Both the statements are true but statement 2 is not the correct explaination for statement 1
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C
Statement 1 is true but statement 2 is false
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D
Statement 2 is true but statement 1 is false
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Solution

The correct option is C Statement 1 is true but statement 2 is false
A molecule is formed when atoms of same or different elements combine together in a constant proportion by mass.
Molecules of compounds such as CO2 , NH3 and H2O are formed by the combination of atoms of different elements. Hence, statement 1 is true but statement-2 is false.

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