Elements And Compounds in Class 9 Science : Practice MCQ Questions & Answers with Explanations

2 practice sets · Page 1 of 1

1.

Which of the following is an example of a compound?

A

Saltwater

B

Oxygen

C

Sand

D

Water

View Answer

Correct Answer: D — Water

Explanation:

Water is a compound made of hydrogen and oxygen chemically combined.

2.

Which of the following substances is a pure element?

A

Copper

B

Sodium chloride

C

Air

D

Saltwater

View Answer

Correct Answer: A — Copper

Explanation:

Copper is a pure element made of only copper atoms.