781Tripura PSC2017General ScienceEnglish
Goldsmiths uses aqua regia, which is prepared by mixing
Show answerAnswer & explanation
Correct option: B — Nitric acid and Hydrochloric acid
Free · past papers · answers included
General Science MCQ practice free online · page 79
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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- 782PPSC2018General ScienceEnglish
pH value shows the Numeric value of
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Correct option: B — Analysing the nature of solution acidic or basic
- 783BPSC2016General ScienceEnglish
Which of the following is present in maximum amount in acid rain?
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Correct option: C — H₂SO₄
- 784UPSC2001General ScienceEnglish
An aqueous solution of copper sulphate is acidic in nature because the salt undergoes.
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Correct option: C — Hydrolysis
- 785JPSC2013General ScienceEnglish
Which is not a Lewis acid?
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Correct option: C — NH₃
- 786RPSC1999General ScienceEnglish
Sodawater obtained by passing carbon dioxide in water is
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Correct option: C — Acidic in nature
- 787RPSC1992General ScienceEnglish
Which of the following acid do not contain Oxygen?
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Correct option: C — Hydrochloric Acid
- 788MPPSC1990General ScienceEnglish
What is Neela thotha?
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Correct option: A — Copper Sulphate
- 789RPSC1994General ScienceEnglish
An unknown gas quickly dissolves in water. This gaseous aqueous solution turns red litmus into the blue. This gas produces hydrogen chloride with a white flame. This unknown gas is
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Correct option: C — Ammonia
- 790CGPSC2016General ScienceEnglish
Baking soda is
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Correct option: A — Sodium Hydrogen Carbonate
General Science practice — common questions
Page 79 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".