Loading practice questions

A focused practice platform for competitive-exam MCQs, subject wise, topic wise practice, and current affairs revision.

Exams

SSC CGL
UPSC CSE PRELIMS
IBPS PO
RRB NTPC
CDS

Subjects

Mathematics
Physics
General Knowledge
English
Reasoning

Resources

Current Affairs
Search MCQs
Practice Sets

Company

About Us
Contact
Privacy Policy
Terms of Use
Disclaimer
Copyright

Practice library for exams, subjects, and daily revision. For learning purposes only.

© 2026 ObjectiveMcq.ComAll rights reserved

Isotopes : Class 9 Science MCQ Practice Questions & Answers (English) - ObjectiveMcq

Class 9 Science Practice

Browse

Topics

Agriculture
Biology
Chemistry
Physics
Science

HomePracticeClass 9 ScienceChemistryAtomic StructureIsotopes

Isotopes in Class 9 Science : Practice MCQ Questions & Answers with Explanations

1 practice sets · Page 1 of 1

Class 9 ScienceMediumChemistry Atomic StructureIsotopes

1.

Which of the following is an example of an element that exists as isotopes?

A

Hydrogen

B

Oxygen

C

Carbon

D

All of the mentioned

View Answer

Correct Answer: D — All of the mentioned

Explanation:

Hydrogen, oxygen, and carbon all have isotopes with different numbers of neutrons.