RRB Group D GS Practice Set 21

RRB Group D General Science (GS) Practice Set 21 : 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 21
RRB Group D General Science (GS) Practice Set 21

RRB Group D General Science (GS) Practice Set 21

Question. The percentage of oxygen in the human’s expiratory air is-

Answer: 3

Question. What is the source of blood platelets?

  • thromboplastin
  • calcium
  • hemoglobin
  • fibrinogen

Answer 1

Question. Which of the following pairings is correct?

  • Wheat, Paddy – Leguminosae
  • Chana, Matar-Ambeli Pheri
  • Potato, Eggplant-Solanaceae
  • Fennel, Coriander-Gramini

Answer: 3

Question. Chernobyl accident is related

  • by nuclear accident
  • by earthquake
  • by flood
  • from acid rain

Answer 1

Question. Milk protein (casein) is digested by—

  • by pepsin
  • by Renin
  • by enterogestrone
  • by trypsin

Answer: 2

Question. Consider the pH of the given solution, which solution has the highest concentration of hydrogen ions?
4.7, 8.0, 2.4, 10.1

Answer: 3

Question. Bryophytes are called-

  • moss
  • livervus
  • Ferns
  • none of these

Answer: 2

read also

  1. RRB Group D GS Practice Set 20
  2. RRB Group D GS Practice Set 12

Question. What is Carotene?

  • is a protein
  • Found in hair.
  • Found in nails.
  • All of the above

Answer: 4

Question. The resistance of a uniform conductor of metal is

  • inversely proportional to its electrical resistivity
  • directly proportional to its area
  • inversely proportional to its area
  • inversely proportional to its length

Answer: 3

Question. The element consists of two chambers which are completely filled.

Answer: 4

Question. An electric bulb is connected to a 220 V generator. The current generated through it is 0.50A. How much power is the bulb?

Answer: 3

Question. An element whose atomic number is 20 will be

  • alkaline metals
  • halogen
  • inert gas
  • alkaline earth metals

Answer: 4

Question. BMR stands for-

  • bone marrow regeneration
  • Basic Metabolic Rate
  • Worth Mortality Rate
  • none of these

Answer: 2

Question. The purpose of choke in a fluorescence lamp is-

  • raising the stream
  • stream down
  • step up voltage
  • voltage drop

Answer: 2

Question. The ratio of hydrogen and oxygen in water to weight is

Answer: 3

Question. An astronaut whose mass is 60 kg. The satellite is orbiting the earth. What will be its weight in the satellite? (g = 10m/s²)

  • 1200 N
  • 600 N
  • infinite
  • Zero

Answer: 4

Question. If two balls of equal temperature collide, what will be conserved?

  • velocity
  • heat
  • kinetic energy
  • Impulse

Answer: 4

Question. Two masses of 1 g and 4 g are moving with equal kinetic energy. The result of their linear momentum will be –

Answer: 4

Question. Types of touch screen panels in mobile phones do not include ……….

  • resistor
  • capacitive
  • voice transmission
  • light transmittance

Answer: 3

Question. Soap is also a salt because-

  • It is made from alkali.
  • it is made of acid
  • It is the sodium salt of higher fatty acids.
  • none of these

Answer: 3

Question. The constant in a uniform circular motion will be-

  • trick
  • acceleration
  • linear velocity
  • centripetal force

Answer 1

Question. The work done in lifting an object of mass 10 kg to a height of 4 m will be-

  • 25 joules
  • 40 joules
  • 100 joules
  • 400 joules

Answer: 4

Question. The position energy will decrease

  • pressing the spring
  • pulling the spring
  • When a body moves against the force of gravity
  • On rising air bubble in water

Answer: 4

Question. The element which has low ionization potential is

  • oxidising agent
  • reducing
  • None of these

Answer: 3

Question. The modern computer was first discovered by-

Answer: ?

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

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