RRB Group D GS Practice Set 20

RRB Group D General Science (GS) Practice Set 20 : Indian Railway Recruitment Board (RRB) has started the recruitment process for Group D posts. There is a provision to complete this examination in several phases, and the first phase examination has started which will be conducted till 25 August 2022. It is worth mentioning that now the candidate will have to give only one examination and on the basis of that the candidates will be selected and the vacant posts will be filled.

In such a situation, 25 important questions and answers of General Science related to Group D exam have been included in front of you through this article. Practice these questions before going to the exam and strengthen your preparation.

RRB Group D General Science (GS) Practice Set 20
RRB Group D General Science (GS) Practice Set 20

RRB Group D General Science (GS) Practice Set 20

Question. Find out the mismatch between the elements O, N, C, Cl, F.

Answer: 3

Question. Which of the following elements belong to the same period as group 1A?

  • Li, Mg, Ca
  • Ni, Cu, Zn
  • Li, Na, K
  • Fe, Cl, Br

Answer: 3

Question. – bond is formed by the overlapping of?

  • on the internuclear axis of the ss orbitals
  • As perpendicular to the axis of sp orbitals
  • on the axis of the PP orbitals
  • as perpendicular to the axes of pp orbitals

Answer: 4

Question. The alpha rays emitted from a radioactive object are

  • hydrogen nucleus
  • negatively charged particles
  • deutron
  • helium nucleus

Answer: 4

Question. Which of the following has zero electron affinity in the periodic table?

  • radium
  • nitrogen
  • oxygen
  • radon

Answer: 4

Question. Aqueous solutions of cupric salts are-

  • of yellow
  • of green
  • of red
  • of blue

Answer: 4

Question. On decreasing the pH value in the soil (up to 4) –

  • fungi remain unaffected
  • actinomycetes remain unaffected
  • bacteria remain unaffected
  • all of the above occur

Answer 1

Question. A net is equal to how many bits?

Answer: 2

Question. The lower density of ice than water is due to

  • induced dipole- induced dipole reciprocal
  • dipole-induced dipole interaction
  • reciprocation of hydrogen bond
  • dipole-dipole interaction

Answer: 3

read also

  1. RRB Group D GS Practice Set 19
  2. RRB Group D GS Practice Set 18
  3. RRB Group D GS Practice Set 17

Question. The resistance of an electric bulb is 400Ω and a current of 0.25 A flows through it, then the power of that bulb will be

  • 50 Watt
  • 25 Watt
  • 40 Watt
  • 100 Watt

Answer: 2

Question. Laser works on the following principle-

  • excitation emission of radiation
  • photoelectric effect
  • Raman Effect
  • All of the above

Answer 1

Question. A catalyst is used for—

  • vaporizing the compound
  • destroying enzymes
  • changing the rate of a reaction
  • to balance the reaction

Answer: 3

Question. ……… is the study of the elements and behavior of human-like species such as monkeys, apes, orangutans etc.

  • ethnobotany
  • Apology
  • anthropology
  • primatology

Answer: 4

Question. Which of the following is not a network protocol?

Answer: 2

Question. The recently approved LIGO-India (LIGO-India) project is related to?

  • Research on the use of solar energy
  • Research on Laser Techniques
  • research on gravitational waves
  • Research on Relocation of Lions

Answer: 3

Question. The resistance of mercury is zero-

  • at 0°C
  • at 100 K
  • at 100°C
  • at 4K

Answer: 4

Question. Name the astronaut who spent 340 consecutive days in space and returned safely to Earth.

  • Joseph A. walker
  • Scott Joseph Kelly
  • William H. Dana
  • William J. knight

Answer: 2

Question. The term TMV is related to—

  • from origin
  • from virus
  • by organic evolution
  • by virus reproduction

Answer: 2

Question. Which of the following is autotrophic?

  • protozoa
  • algae
  • fungus
  • Virus

Answer: 2

Question. The potential difference across the terminals of an electric heater is 600 when it receives a current of 4A from the source. If the potential difference increases to 127.5 V, what will be the current received by the heater?

Answer: 4

Question. Trigger – poison is –

  • anti-action
  • homogeneous trigger
  • self activator
  • heterogeneous trigger

Answer 1

Question. The heat capacity of a substance depends on –

  • at the temperature of the substance
  • on the density of the substance
  • on the specific heat of the substance
  • on the structure of matter

Answer: 3

Question. “Every matter has energy due to its mass” – Which scientist propounded this theory?

  • rutherford
  • newton
  • einstein
  • Henry Bequerel

Answer: 3

Question. The vertical lines in the periodic table are called

  • periodic
  • room
  • sub-room
  • group

Answer 1

Question. What are multimedia components?

  • graphics
  • animation
  • Video
  • all

Answer: ?

What would be the correct answer to this question? Do give us your answer in the comment section.

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