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Elements And Compounds : Class 9 Science MCQ Practice Questions & Answers (Bengali) - ObjectiveMcq

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PracticeClass 9 ScienceChemistryElements And Compounds

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

2 practice sets · Page 1 of 1

Class 9 ScienceMediumChemistryElements And CompoundsCompounds

1.

Which of the following is an example of a compound?

A

Saltwater

B

Oxygen

C

Sand

D

Water

Correct Answer:

D — Water

Explanation:

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

Class 9 ScienceMediumChemistryElements And CompoundsElements

2.

Which of the following substances is a pure element?

A

Copper

B

Sodium chloride

C

Air

D

Saltwater

Correct Answer:

A — Copper

Explanation:

Copper is a pure element made of only copper atoms.