Q. Which of the following statements regarding compounds is/are correct?

1. It is a substance composed of two or more elements.
2. The composition of each new substance is always fixed.
3. It shows the properties of the constituent substances.

Select the correct option from the codes given below:
Answer: Only 1 & 2
Notes: Compounds are substances formed from two or more elements combined in a fixed ratio by mass. The properties of a compound are different from those of its constituent elements. Compounds have a definite composition that can be separated only by chemical or electrochemical means. Thus, statements 1 and 2 are correct, while statement 3 is incorrect.