RRB Group D - General Science PYQ Quiz 248
10 PYQ questions from RRB Group D - General Science
About This Quiz
This is one set from a larger bank. See all RRB Group D General Science previous year questions.
RRB Group D - General Science PYQ Quiz 248 — Questions with Solutions
All 10 questions from this quiz with the correct answer and explanation. Attempt them yourself first, then open each solution to check your reasoning.
Q1.A copper wire has radius 0.5 mm and length 100 m. If the resistivity of the material is 2.5 × 10⁻⁸ ohm−m, then the resistance of the wire is ______.
- A.10 π ohm
- B.1000 π ohm
- C.1000 / π ohm
- D.10 / π ohm
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Answer: D. 10 / π ohm
Q2.The splitting of light of the sun into various colours of the rainbow is called ______.
- A.Dispersion of light
- B.scattering of light
- C.Reflection of light
- D.Total internal reflection
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Answer: A. Dispersion of light
Q3.In the given reaction, reduction of which substance takes place? Fe₂O₃ (s) + 2Al (s) → Al₂O₃(s) + 2Fe(l)
- A.Ferric oxide
- B.Aluminium oxide
- C.Aluminium
- D.Iron
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Answer: A. Ferric oxide
Q4.The best practice that is involved in biological waste disposal is:
- A.incineration
- B.reusing
- C.recycling
- D.open dumping
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Answer: A. incineration
Q5.Which of the following statements is/are true in case of an incandescent filament bulb? (a) Filament can be made of tungsten or nichrome. (b) The glass envelope covering the filament is filled with inactive gases such as nitrogen or argon. (c) Since the filament used is thin, its resistivity is very low. (d) The resistivity of the filament is low to allow more current. (e) The filament material used should have high melting point.
- A.(c), (d), (e)
- B.(a), (b), (e)
- C.(a), (c), (d)
- D.(b), (c), (d)
Show answer
Answer: B. (a), (b), (e)
Q6.This question consists of a statement followed by two arguments I and II. Read the statement and the arguments carefully and select the appropriate answer from the given options. Statement: Eating frozen foods is advantageous. Arguments: I. Frozen foods, sometimes, may have more vitamins and minerals compared to fresh food, because fresh foods lose vitamins and minerals over time while freezing preserves nutrients. II. Sodium present in frozen foods can lead to increased blood pressure level.
- A.II weakens while I strengthens the statement
- B.Both I and II strengthen the statement
- C.I weakens while II strengthens the statement
- D.Both I and II weaken the statement
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Answer: A. II weakens while I strengthens the statement
Q7.Among the following situations, potential difference is induced in a closed conducting coil when:
- A.either the bar magnet is moved towards the closed coil or the closed coil is moved towards the bar magnet
- B.both the bar magnet and the closed coil are moving with same speed and in the same direction
- C.the closed coil is moved towards the bar magnet only
- D.a bar magnet is moved towards the closed coil only
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Answer: A. either the bar magnet is moved towards the closed coil or the closed coil is moved towards the bar magnet
Q8.Burning of natural gas is:
- A.an endothermic reaction
- B.an exothermic reaction
- C.a substitution reaction
- D.a decomposition reaction
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Answer: B. an exothermic reaction
Q9.Bleaching powder is formed when dry slaked lime reacts with ______.
- A.bromine
- B.chlorine
- C.hydrogen
- D.nitrogen
Show answer
Answer: B. chlorine
Q10.The SI unit of power of a lens is:
- A.joule
- B.newton
- C.dioptre
- D.metre
Show answer
Answer: C. dioptre
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