Loading subject 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

reactions - Chemistry Previous Year Asked Questions with Answers (Sanskrit) - ObjectiveMCQ

Chemistry

Browse

Topics

Atomic Structure
- Quantum Numbers
Carbon Compounds
- Hydrocarbons
Electrochemistry
- Electrolysis
Matter
Periodic Table
Reactions

SubjectsChemistryreactions

reactions in Chemistry : PYQs with Answers

1 questions · Page 1 of 1

SSC CGL 2023Reactions

1.

In the reaction $2Mg + O_2 \rightarrow 2MgO$ , magnesium is:

A

Reduced

B

Oxidised

C

Neither oxidised nor reduced

D

Acting as an oxidising agent

View Answer

Correct Answer: B — Oxidised

Explanation:

Magnesium loses electrons to oxygen, so it is oxidised. Oxygen is reduced. This is a redox reaction.