471CGPSC2015General ScienceEnglish
If potential difference and current flowing through a wire is increased twice each, then electric power
Show answerAnswer & explanation
Correct option: B — Will increase four times
Free · past papers · answers included
General Science MCQ practice free online · page 48
Questions from RRB, NTPC, Group D and JE past papers. Tap an option to check it instantly — every question shows the correct answer, and most carry the explanation the paper gave.
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- 472UPSC2001General ScienceEnglish
Two wires have their lengths, diameters and resistivities all in the ratio of 1 : 2. If the resistance of the thinner wire is 10 ohm, the resistance of the thicker wire is
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Correct option: B — 10 ohm
- 473UPPSC2015General ScienceEnglish
Small drops of the same size are charged to V volts each. If n such drops coalesce to form a single large drop, its potential will be
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Correct option: A — n²/³V
- 474UPPSC2011General ScienceEnglish
Transformer is used for
Show answerAnswer & explanation
Correct option: D — To step up or step down AC voltages
- 475RPSC1994General ScienceEnglish
Alternate current is not preferable
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Correct option: A — To charge storage battery
- 476UPPSC2006General ScienceEnglish
The device used for converting alternating current to direct current is called
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Correct option: B — Rectifier
- 477UPPSC2010General ScienceEnglish
Alternating current is converted to direct current
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Correct option: D — By Rectifier
- 478UPPSC1992General ScienceEnglish
Which of the following option represents the consumption of power in ascending order?
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Correct option: C — Fan, television, electronic press, electronic kettle
- 479UPPSC2011General ScienceEnglish
The Earth’s magnetic field is due to
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Correct option: A — Currents circulating inside the core
- 480UKPSC2016General ScienceEnglish
Nickel-Cadmium (Ni-Cd) battery is used in
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Correct option: D — All of the above
General Science practice — common questions
Page 48 of this set has 10 questions on it.
Are these General Science questions free to practise?
Yes. Every question on this page is free and needs no account. Create a free account only if you want your progress saved.
Where do these General Science MCQs come from?
They are taken from official past papers of Indian government recruitment exams such as RRB NTPC, RRB Group D and RRB JE, and each question keeps a reference to the exam it appeared in.
Are the questions available in Hindi?
Yes. Many papers are set in both languages, so a large share of these questions are available in Hindi. Use the language filter at the top of the page.
Do the questions show answers and explanations?
Every question shows the correct option. Where the source paper included a worked solution, the explanation is shown under "Show answer".