Railway RRB Group D 2022 Science Practice Set 7: Attempt 25 Questions Of Previous Papers
Railway RRB Group D 2022 Science Practice Set 7: Railways has declared the exam date of Group D, which will start from 23rd February 2022 and will continue for about 2 months. 25 questions are asked from Science subject in Railway Group D paper. Which plays a very important role in selection in Railway Group D. Here we have given the questions asked by the Railway Group D Previous Papers in the form of question and answer format from Science in the previous examinations. Hope this free RRB Group D Science Questions Series will prove helpful in your selection.
Railway RRB Group D 2022 Science Practice Set 7: Attempt 25 Questions of Previous Papers
| Recruitment Organization | Railway Recruitment Board (RRB) |
| Post Name | Group D (Level 1 Posts) |
| Advt No. | CEN RRC 01/2019 |
| No. of Vacancies | 103769 |
| Topic | Free RRB Group D Science Practice Set/ Mock Test |
| RRB Group D Previous Papers PDF | Click Here |
Q.1 The walls of sclerenchyma cells are thickned due to ………. ?
- Cellulose
- Lignin
- Hemi-cellulose
- Pectin
Q.2 The prefix added to the name of the hydrocarbon with 4 carbon atom is?
- Hept
- Prop
- Eth
- But
Q.3 In which of the following activities is work said to be done?
- Pinki is walking on a leveled road with a book on her head
- Khushi is pushing a wall of a house but fails to do so
- Shruti is sitting on a chair
- Harsh is reading a book
Q.4 …… contributed to the theories of inheritance of traits in living things?
- Gregor Mendel
- JBS Haldane
- Stanley Miller
- Charles Darwin
Q.5 A milkman adds a small amount of baking soda to fresh milk?
- To improve taste of milk
- To improve the consistency of milk
- To increase the cream in the milk
- To prevent acidisation of milk
Q.6 An object is released from a certain height above the ground. Just at the time it touches the ground, it will possesses …….. ?
- kinetic energy
- heat energy
- potential energy
- chemical energy
Q.7 The electronic configuration of an element belonging to period 2 and showing strong catenation property is?
- 2,8,2
- 2,4
- 2,6
- 2,8,4
Q.8 We can control the urge to urinate as …….?
- sphincter muscle is present between bladder and urethra
- bladder is filled with water
- bladder does not fill up easily
- the muscular bladder is under nervous control
Q.9 ……. is prevented by coating the conducting wire with pvc?
- Fusing
- Overloading
- Short Circuit
- Dripping
Q.10 The molecular mass of O2 is …….?
- 64
- 8
- 16
- 32
Q.11 Which is not a covalent molecule?
Q.12 If the electronic configuration of an element is 2,8,2 to which period of the modern periodic table does it belong?
- 12
- 4
- 2
- 3
Q.13 Which of the following is the ore of mercury?
- Bauxite
- Cinnebar
- Arsenic
- Stibnite
Q.14 To change a temperature from the Kelvin scale to the Censius Scale, you have to?
- divide the given temperatue by 273
- subtract 273 from the given temperature
- multiply the given temperature by 273
- add 273 to the given temperature
Q.15 The transmission of traits, physical or mental, from parents to offspring is called …….. ?
- evolution
- heredity
- variation
- progeny
Q.16 Consider a planet whose mass and radius are one third the mass and radius of earth. If g is the value of acceleration due to gravity on the earth its value on the planet will be ……. ?
- 9 g
- 1/3 g
- 3 g
- 1/9 g
Q.17 During the free fall of an object, which of the following energies increases at any point in its path?
- Chemical Energy
- Mechanical Energy
- Kinetic Energy
- Potential Energy
Q.18 Why does a stone thrown up into the sky fall back to the earth?
- There exists a centripetal force that pulls it down towards the Earth.
- There exists a force that pulls it down towards the earth
- There is a downward pressure that pulls it down towards the Earth
- Work done by the object pulls down towards the earth.
Q.19 The kinetic energy of the particles is maximum in the case of ……..?
- solids
- plasma
- liquids
- gases
Q.20 Tooth decay starts when the pH of the mouth is?
- in the ranhe 5.5-6.5
- is in the range of 8-9
- less than 5.5
- is in the range of 6.5-7.5
Q.21 An object is placed in front of a concave mirror at a point between its centre of curvature and focus. The image will be formed at?
- the focus
- the centre of curvature
- a point between the focus and the centre of curvature
- a point beyond the centre of curvature
Q.22 Two objects A and B are moving with the same velocity. The mass of object A is twice that of B. The ratio of the kinetic energy of A to that of B, (Ka/ Kb) will be ……?
- 4
- 2
- 1/2
- 1
Q.23 Solder is an alloy of?
- Ni, Cu and Zn
- Cu and Sn
- Cu and Zn
- Pb and Sn
Q.24 The elements present in any one group have the same …….?
- atomic number
- number of valence electronics
- atomic number
- atomic size
Q.25 Three identical registers, each of 6 ohm, are connected in parallel. The equivalent resistance of the combination will be ……?
- 2 ohm
- 6 ohm
- 18 ohm
- 3 ohm
Hello Students, Hope this series of RRB Group D Science Questions will help you in your preparation. Comment your Score, Query, Suggestions in the comment box below.
