Which synthetic chemicals are responsible for the depletion of ozone in the atmosphere?
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Correct answer: (A) Chlorofluorocarbons (CFCs)
RRB JE · General Science
Chemistry: Carbon & Compounds Previous Year Questions
8 Chemistry: Carbon & Compounds (General Science) questions asked in RRB JE previous year papers, each with the correct answer and explanation. Read them free on UTpaper, or attempt the full papers as timed online tests.
- 8 questions
- Official answer key
- Free
Other General Science topics
A tube like structure grows down from the pollen grain to the style and reaches the ovule. This pollen tube is responsible for:
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Correct answer: (C) carrying the male germ cell to the female germ cell in the ovary
What is the primary composition of the stable composite developed by IIT Mandi that
prevents 2D semiconductors from degrading?
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Correct answer: (C) Tungsten disulfide (WS) encapsulated in polydimethylsiloxane (PDMS)
Why is potassium hydroxide used in the bell-jar experiment involving photosynthesis?
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Correct answer: (A) To absorb carbon dioxide
Which of the following is the correct relationship between the number of carbon and
hydrogen atoms in alkenes?
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Correct answer: (D) CnH2n
Which substance has a molecular mass of 44 u?
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Correct answer: (B) Carbon dioxide
When methane (CH4) burns completely in the presence of sufficient oxygen, which
products are formed?
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Correct answer: (C) Carbon dioxide and water
Atomic masses of elements are compared with a standard reference. Carbon-12 was
chosen as the standard for the atomic mass unit mainly because:
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Correct answer: (C) Carbon-12 gives atomic masses close to whole numbers
How to use these RRB JE General Science questions
Every question here was asked in a real RRB JE paper; the paper and shift are shown on the card, and the number opens the question on its own page. Try each one before tapping Show answer, then attempt the full RRB JE papers as timed tests to check your speed under exam conditions.