# RRB Group D Exam 2022: Study these important questions from General Science

RRB Group D General Science Practice Set – 25 : Railway Recruitment Board Group D exam is going to start from 23 February 2022, for all those candidates who are preparing for Railway Group D exam, today we have brought 25 general science important questions through this article. These questions have been asked mainly in the previous years, so candidates must go through these questions to make their preparation strong.

In this RRB Group D practice set, 25 important questions with answers have been mentioned, which have been asked in the examinations set by the Railways, so the candidates must solve this practice set for their better efforts and highest efficiency.

## RRB Group D General Science Practice Set – 25( 25 Important Q&A)

Question. The following is the number of atoms contained in a compound having the formula Ca3(PO4)2

Question. Which of the following alcohols can have the strongest hydrogen bond?

• primary
• secondary
• tertiary
• in all three

Question. Which scientist developed the first functional periodic table in 1869?

• Dmitri Mendeleev
• lochmid
• Gregor Mendel
• Gregor beans

Question. Oniology is the study of what?

• God
• Dreams
• Sleep
• Colour

Question. Which cell membrane is called the master of the cell?

• endoplasmic
• metro chondria
• nucleolus
• Nucleus

Question. Surface tension of a liquid due to increase of temperature

• decreases
• remains constant
• grows up
• None of these

Question. Which of the following instruments is used to measure pressure?

• thermometer
• Pressure gauge
• Density gauge
• Pressure gauge

Question. Generally the ranges of the visual spectrum are approximately

• 1000A0 to 4000A0
• 4000A0 to 7000A0
• 7000A0 to 10,000A0
• 10,000A0 to 13,000A0

Question. Sound waves are

• longitudinal
• oblique
• sometimes oblique, sometimes vertical
• sometimes oblivious

Question. If the same force is applied on a heavy and a light body for the same period, then these bodies

• will move with a uniform velocity
• will move with a uniform momentum
• will move with a uniform acceleration
• nothing like the above

Question. What is the graph between T2 (period) 2 and length (l) of a simple pendulum?

• straight line
• pointwise
• News
• parabola

Question. The ratio of lateral strain and longitudinal strain is called

• Poisson Ratio
• volume elasticity coefficient
• firmness coefficient
• Young’s elasticity coefficient

Question. Which of the following is the unit of coefficient of viscosity?

• pascal
• joule
• Wait
• Pwaijuli

Question. It takes t second to drop an object from 30 m, how much time will it take to drop the same object from 120 m?

• t sec
• 2t second
• 3t second
• none of these

Question. What is the relationship between the physical gain (MA), velocity ratio (VR) of the machine and the capacity (m) of the machine?

• M.A. = n x V.R.
• V.R. = n xM.A.
• n = M.A. x V.R.
• none of these

Question. A piece of stone tied to one end of the thread, holding the other end of the thread in the hand, is rotated in a circular motion, if the length of the thread and the velocity of the piece are multiplied by two, the tension of the thread is greater than before.

• will double
• will be four times
• will be half
• will remain unchanged

Question. A fly wheel, starting from a stationary position, attains an angular speed of 240 revolutions per minute in 10 seconds. What will be its acceleration?

• none of these

Question. What is the process of converting a liquid into vapor before its boiling point is called?

• evaporation
• condensation
• Freezing
• none of these

Question. If 64 drops of rain combine to form one big drop. Then the ratio between the total surface energy of 64 drops and the surface energy of one drop will be

• 4 : 1
• 2:1
• 16:1
• none of these

Question. Which of the following conversion is correct?

• 1 atm = 1.01 x 10 Pa
• 1 mm Hg = 133 Pa
• 1 bar = (10) 7 Pa.
• 1 torr = (10)2 Pa

Question. Generally, doctors do not take direct X-ray pictures of the intestines because

• Intestines will burst when X-rays occur
• X-rays won’t pass through the intestines
• X-rays will pass through the intestines, but they have no useful reflection.
• Even fighting for microscopic gaps that pass through the intestines of X-rays leads to cancer.

Question. What is that property of a body called? By which it resists any change in the state of rest or uniform motion in a straight line.

• immobility
• inertia
• Total weight
• inactivity

Question. A cyclist turns around in a turn, then it-

• leans out.
• leans forward.
• leans inward.
• Doesn’t budge at all.

Question. If on which body a constant moment of force is acting, then this body-

• attains its steady state or straight line.
• Gets linear acceleration.
• Gets the linear angular acceleration.
• rotates at a constant speed.