Which ion is responsible for the acidic properties of acids?
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Correct answer: (B) H⁺
RRB JE · General Science
Chemistry: Atoms & Periodic Table Previous Year Questions
12 Chemistry: Atoms & Periodic Table (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.
- 12 questions
- Official answer key
- Free
Other General Science topics
When an atom of sodium reacts with an atom of chlorine to form sodium chloride, each sodium atom:
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Correct answer: (C) loses one electron
Which ion reduces at the cathode during electrolysis of fresh brine solution?
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Correct answer: (B) H⁺
Which of the following best describes why ionic compounds like potassium bromide (KBr) do NOT conduct electricity in solid form but do in molten form?
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Correct answer: (C) Ionic bonds prevent ion movement in solid KBr.
In a micelle, which part faces outward toward water?
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Correct answer: (B) Ionic head
Which element exists as a monoatomic molecule?
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Correct answer: (D) Argon
Methane reacts with chlorine in the presence of sunlight to form chloromethane and
hydrogen chloride. Which of the following statements is CORRECT?
Statement I: Only one chlorine atom can substitute at a time.
Statement II: The reaction is an example of a substitution reaction.
Statement III: Multiple substitution can occur if the reaction continues.
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Correct answer: (C) I, II and III are true
During aerobic respiration, each pyruvate molecule is broken down to give ______
molecules of carbon dioxide.
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Correct answer: (B) Three
In graphite, a carbon atom is attached with:
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Correct answer: (D) Three other carbon atoms
If an atom loses two electrons, which of the following changes will occur?
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Correct answer: (A) The atom will become a cation with +2 charge.
Which statement correctly describes an ion?
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Correct answer: (B) A charged atom or group of atoms
Which statement correctly describes the atomic number of an element?
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Correct answer: (C) Number of protons present in the nucleus
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.