RRB Group D - General Science PYQ Quiz 259
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 259 — 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.Identify the INCORRECT order for the number of valence shell electrons.
- A.Li < Be < B < C < N
- B.Al < P < Si < S < Cl
- C.Na < Mg < Al < P < Ar
- D.B < N < O < F < Ne
Show answer
Answer: B. Al < P < Si < S < Cl
Q2.From a total of _____ elements, _____ elements were discovered through laboratory processes.
- A.114, 22
- B.114, 20
- C.118, 26
- D.118, 24
Show answer
Answer: D. 118, 24
Q3._________ is the chemical name of washing soda.
- A.Sodium carbonate tetrahydrate
- B.Sodium carbonate pentahydrate
- C.Sodium carbonate decahydrate
- D.Sodium carbonate trihydrate
Show answer
Answer: C. Sodium carbonate decahydrate
Q4.Identify the correct relation between radius of curvature 'R', object distance 'u' and image distance 'v' for a spherical mirror.
- A.R = uv/2(u + v)
- B.R = 2uv/(u + v)
- C.R = (u + v)/2uv
- D.R = 2(u + v)/uv
Show answer
Answer: B. R = 2uv/(u + v)
Q5.Two resistors R₁ and R₂ with resistances 2 Ω and 3 Ω, respectively, are connected in series to a 15V battery source. The current across R₂ (in A) is:
- A.5
- B.3
- C.7.5
- D.15
Show answer
Answer: B. 3
Q6.Cork is impermeable to water and gases because of _________ found within its cells.
- A.lignin
- B.cutin
- C.cellulose
- D.suberin
Show answer
Answer: D. suberin
Q7.Identify the basic requirements that led scientists towards the classification of elements. (i) Identification of some pattern in different properties of elements (ii) Rearrangement of elements on the basis of their synthesis (iii) To get overall idea of the colour of different elements
- A.(ii) and (iii)
- B.(i), (ii) and (iii)
- C.(i) and (iii)
- D.only (i)
Show answer
Answer: D. only (i)
Q8.Coal and petroleum have their own advantages and disadvantages. Three of the statements regarding coal and petroleum are similar. Choose the one that is dissimilar.
- A.When burnt in insufficient O₂ produce carbon monoxide, which is a poisonous gas
- B.When burnt produce CO₂, which causes global warming
- C.When burnt produce oxides of N and S that are poisonous and cause acid rain
- D.Used to generate electricity in thermal plants and are cost effective
Show answer
Answer: D. Used to generate electricity in thermal plants and are cost effective
Q9.According to mirror formula, the focal length of a spherical mirror is equal to:
- A.(u−v)/uv
- B.uv/(u−v)
- C.(u+v)/uv
- D.uv/(u+v)
Show answer
Answer: D. uv/(u+v)
Q10.Red colour is scattered the _______ by fog or smoke because its wavelength is _______ than the wavelength of other colour components of white light.
- A.least, less
- B.most, less
- C.least, more
- D.most, more
Show answer
Answer: C. least, more
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