811UPPSC2015General ScienceEnglish
In all bio-compounds the most necessary fundamental element is
Show answerAnswer & explanation
Correct option: B — Carbon
Free · past papers · answers included
General Science MCQ practice free online · page 82
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.
No sign-up10 per pageAnswers & explanations
- 812UPSC1994General ScienceEnglish
Which one of the following is the correct sequential order in which these appeared under simulated primitive earth condition?
Show answerAnswer & explanation
Correct option: A — Methane, Hydrogen, Cyanide, Nitrile, Amino Acid
- 813BPSC2015General ScienceEnglish
Which is the fundamental element of all organic compounds?
Show answerAnswer & explanation
Correct option: C — Carbon
- 814UPSC2001General ScienceEnglish
Which one of the following is the correct sequence in increasing order of molecular weights of the hydrocarbons?
Show answerAnswer & explanation
Correct option: A — Methane, Ethane, Propane and Butane
- 815HPPSC2019General ScienceEnglish
Which one of the following was used as a chemical weapon in the First World War?
Show answerAnswer & explanation
Correct option: C — Mustard gas
- 816KPSC2017General ScienceEnglish
Mustard gas is used
Show answerAnswer & explanation
Correct option: B — In chemical warfare
- 817JPSC2016General ScienceEnglish
Poisonous mustard gas is a
Show answerAnswer & explanation
Correct option: B — Liquid
- 818BPSC2015General ScienceEnglish
Which of the following gases is used in cigarette lighters?
Show answerAnswer & explanation
Correct option: A — Butane
- 819APSC2018General ScienceEnglish
Leakage of which of the following gases had caused the Bhopal Gas Tragedy?
Show answerAnswer & explanation
Correct option: A — Methyl isocyanate
- 820Goa PSC2017General ScienceEnglish
From the decomposition of which of the following printing ink is formed?
Show answerAnswer & explanation
Correct option: B — Methane
General Science practice — common questions
Page 82 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".