RRB Group D GS Practice Set 12 (MCQ)

RRB Group D General Science (GS) Practice Set 12 : 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 will be conducted from 17 August 2022 to 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 12
RRB Group D General Science (GS) Practice Set 12

RRB Group D General Science (GS) Practice Set 12

Question. It is obtained by polymerization of acrylonitrile.

  • rayon
  • dacron
  • orlon
  • nylon

Answer: 3

Question. The reaction A + B – C + D+ is heat, a

  • reversible and endothermic
  • irreversible and heat resistant
  • reversible and heat-excitable
  • irreversible and endothermic

Answer: 2

Question. Which of the following is helpful?

  • HNO3
  • KMnO4
  • K₂Cr₂07
  • (COOH)₂

Answer: 4

Question. The vertical columns of Mendeleev’s periodic table are called-

  • grade
  • periodic
  • group or family
  • all is true

Answer: 3

Question. The oxidation number of a compound is basically

  • negative
  • Zero
  • same as 1
  • positive

Answer: 2

Question. Which gas is used to put out a fire?

Answer 1

Question. A man drops a 10 kg stone from the top of a 5 m ladder. When it hits the earth, its speed will be

  • 12.4m/s
  • 10.8 m/s
  • 10.2m/s
  • 9.90m/s

Answer: 4

Question. The formula for sodium thiosulfate is-

  • Na2SO3
  • Na2S2O3
  • NaHSO3
  • NaHSO4

Answer: 2

Question. If some water is put in the barometer tube, where will the level of mercury go in the tube?

  • there will be no change
  • will rise
  • will fall
  • none of these

Answer: 3

Question. 3 cm. The time taken by light to cross a thick glass block is

Answer: 2

Question. What type of lever is the key to open a lemon bottle?

  • first type
  • other kind
  • third type
  • fourth type

Answer: 2

Question. The order of first ionization potential in Na, Mg, Al and Si is-

  • Na Al
  • Na > Mg > Al
  • Na Si
  • Na > Mg > Al > Si

Answer 1

Question. Ice is-

  • transparent
  • opaque
  • neither opaque nor semi transparent
  • none of these

Answer 1

Question. The equivalent resistance of two unknown resistors is 14 in series and 20/7 in parallel combination. Both the unknown resistances have different values-

  • 10Ω and 4
  • 12Ω and 2
  • 8Ω and 6
  • 12Ω and 2

Answer 1

Question. Fire alarm is based on which one of the following principles?

  • linear expansion of metals
  • Newton’s law of cooling
  • Bimetallic rod bends when heated
  • regional spread of metals

Answer: 3

Question. Which of the following sets of forces will keep the object in equilibrium?

  • 10N, 60N, 6N
  • 10N, 6N, 8N
  • 10N, 10N, 10N
  • all are true

Answer: 3

Question. If the length of a pendulum is increased by 2%, then its period of oscillation

  • 10% decreases
  • 2% rises
  • Decreases 20%
  • Some multiplier increases by 1.01%.

Answer: 4

Question. The process of dividing a disc into tracks and sectors is called

  • tracking
  • formatting
  • crushing
  • allotting

Answer: 2

Question. In a rectangular room with mirrors on the corresponding walls and ceiling, then how many images can a person standing in that room see for himself?

Answer: 3

Question. Light appears to be moving in a straight line because-

  • wavelength is too short
  • longer wavelength
  • it casts shadows
  • none of these

Answer: 3

Question. One gram weight is-

  • 0.98 dyne
  • 98 din
  • 980 din
  • 9.8 dine

Answer: 3

Question. A clock that tells the correct time at sea level is 1 km above sea level. If the clock is taken down

  • 7 to 0 per day will get faster
  • 13.5 to 0 per day will become lethargic
  • 23.5 to 0 per day will be faster
  • 17 to 0 per day will be sluggish

Answer: 4

Question. Max Planck is concerned

  • from quantum theory
  • from wave theory
  • from both of the above
  • none of these

Answer 1

Question. White Bud disease occurs in maize, due to deficiency

  • of zinc
  • of boron
  • of iron
  • of molybdenum

Answer 1

Question. Which of the following sounds is pleasant to hear and of high quality?

  • Noise
  • High pitch
  • low pitch
  • Music

Answer:??

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


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