RRB Group D - General Science PYQ Quiz 256
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 256 — 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.Which of the following line(s) act as a normal to a spherical mirror? (i) Line joining the pole and centre of curvature (ii) Line joining the centre of curvature and point of incidence (iii) Line joining focus and point of incidence
- A.Both (i) and (ii)
- B.Both (i) and (iii)
- C.(i), (ii) and (iii)
- D.Both (ii) and (iii)
Show answer
Answer: A. Both (i) and (ii)
Q2.________ aid(s) in the emulsification of fat.
- A.Trypsin
- B.Bile salts
- C.HCl
- D.Pepsin
Show answer
Answer: B. Bile salts
Q3.Some effects of large production of biodegradable waste are mentioned below. Choose the INCORRECT statement.
- A.Gives out foul smell
- B.Amount of waste sent to landfills increases
- C.Act as breeding ground for mosquitoes and spread diseases
- D.Replenishment of soil nutrients
Show answer
Answer: B. Amount of waste sent to landfills increases
Q4.Carbon is able to form stable compounds because of:
- A.its smaller atomic size
- B.its allotropic forms
- C.its ability to form covalent bond
- D.the presence of p-orbital
Show answer
Answer: A. its smaller atomic size
Q5.Planets do not twinkle because
- A.they scatter more light
- B.they scatter less light
- C.they act as extended source of light
- D.they act as a point source of light
Show answer
Answer: C. they act as extended source of light
Q6.A magnesium ribbon burns with a dazzling flame in air (oxygen) and changes into a white substance 'X'. The X is:
- A.MgCO₃
- B.MgO
- C.Mg(OH)₂
- D.Mg
Show answer
Answer: B. MgO
Q7.Compounds C₂H₆ and C₃H₈ differ by ______ unit and belong to ______ series.
- A.CH₃, homologous
- B.CH₂, heterogeneous
- C.CH₃, heterogeneous
- D.CH₂, homologous
Show answer
Answer: D. CH₂, homologous
Q8.Some features of genes are mentioned below. Which option states the INCORRECT feature of genes?
- A.They do not undergo any change.
- B.They control traits by producing proteins.
- C.Each germ cell has one gene set.
- D.They are segments of DNA.
Show answer
Answer: A. They do not undergo any change.
Q9.Consider the below statements and classify the correct answer. Statement I: Metallic character decreases across a period as we move from left to right. Statement II: The effective nuclear charge acting on the valence shell electrons increases across a period, so the tendency to lose electrons will decrease.
- A.Both statements are correct. Statement II is correct explanation of Statement I.
- B.Both statements are correct. Statement I is correct explanation of Statement II.
- C.Only Statement II is correct.
- D.Only Statement I is correct.
Show answer
Answer: A. Both statements are correct. Statement II is correct explanation of Statement I.
Q10.Match the following: Substance | pH i. Lemon juice | a. 14 ii. Gastric juice | b. 1.2 iii. Milk of magnesia | c. 2.2 iv. Sodium hydroxide solution | d. 10
- A.i-a, ii-b, iii-c, iv-d
- B.i-c, ii-b, iii-d, iv-a
- C.i-c, ii-b, iii-a, iv-d
- D.i-d, ii-b, iii-c, iv-a
Show answer
Answer: B. i-c, ii-b, iii-d, iv-a
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