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General Science MCQ practice free online · page 74

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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  1. 731BPSC2001General ScienceEnglish

    An element X has four electrons in its outermost orbit. What will be the formula of its compounds with hydrogen?

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    Correct option: D — XH₄

  2. 732Sikkim PSC2016General ScienceEnglish

    According to weight, the percentage of hydrogen in water (H₂O), is

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    Correct option: D — 11.11%

  3. 733UPPSC2015General ScienceEnglish

    Which one of the following fuels causes minimum air pollution?

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    Correct option: B — Hydrogen

  4. 734UPPSC1993General ScienceEnglish

    Heavy water is a type of

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    Correct option: B — Moderator

  5. 735JPSC2003General ScienceEnglish

    The chemical formula of Heavy Water is

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    Correct option: B — D₂O

  6. 736TSPSC2018General ScienceEnglish

    The substance used as moderator and coolant both, in nuclear reactors is

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    Correct option: B — Heavy water

  7. 737MPPSC1991General ScienceEnglish

    What is heavy water?

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    Correct option: A — Oxygen + Heavy Hydrogen

  8. 738PPSC2015General ScienceEnglish

    Heavy water is that water

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    Correct option: C — In which isotopes takes place of Hydrogen

  9. 739UPPSC2007General ScienceEnglish

    Heavy water

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    Correct option: B — Contains deuterium in place of Hydrogen

  10. 740UPSC2008General ScienceEnglish

    Who among the following discovered heavy water?

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    Correct option: B — H.C. Urey

General Science practice — common questions

Page 74 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".