Loading exam 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.

SSC CGL 2020 MCQ Questions & Answers (Bengali) - ObjectiveMcq

SSC CGL 2020

Browse

All Questions

Subjects

Chemistry1 Physics1

ExamSSC CGL2020

SSC CGL 2020 - Questions and Answers

Browse the questions, answers and explanations for SSC CGL in 2020.

2 questions · Page 1 of 1

SSC CGL2020Chemistry Electrochemistry

During electrolysis of water, which gas is produced at the cathode?

Oxygen

Chlorine

Hydrogen

Nitrogen

View Answer

Correct Answer: C — Hydrogen

Explanation:

At the cathode (negative electrode), reduction occurs: $2H^+ + 2e^- \rightarrow H_2$ . So hydrogen is produced.

SSC CGL2020Physics Magnetism

Which property of a magnet is used in an electric motor?

Attraction between like poles

Force on a current-carrying conductor in a magnetic field

Magnetic induction

Self-inductance

View Answer

Correct Answer: B — Force on a current-carrying conductor in a magnetic field

Explanation:

Electric motors work on the principle that a current-carrying conductor placed in a magnetic field experiences a force (Fleming's left-hand rule).

Previously Asked Questions