June 7, 2019

RRB Exam General Science Model Questions & Answers

1. A porter lifts a luggage of 10 kg from the ground and puts it on his head 1.1 m above the ground. Calculate the work done by him on the luggage..(g=10ms-2.)
1) 155J 
2) 165J
3) 140J 
4) 110J

2. An object of mass 20 kg is moving with a uniform velocity of 10ms-1. What is the kinetic energy possessed by the object?
1) 1000 N
2) 1000 J
3) 1000 Pa 
4) 1000 Nm-2

3. In any medium, as we increase the ____, the speed of sound increases.
1) force 
2) pressure
3) temperature 
4) momentum

4. ____lens is used by people suffering from hypermetropia.
1) Plano concave
2) Concave 
3) Convex
4) Cylindrical

5. Metals are good conductors of electricity because they have many loosely bound
1) atoms 
2) protons
3) electrons 
4) neutrons

6. How much work is done in moving a charge of 5 C across two points having a potential difference of 10 V?
1) 50 A 
2) 50 V
3) 50 C
4) 50J

7. What is the temperature at which a solid melts to become a liquid at atmospheric pressure called?
1) Melting point
2) Latent heat 
3) Boling point
4) Latent heat of fusion

8. ____is a surface phenomenon.
1) Melting
2) Boiling
3) Evaporation 
4) Freezing

9. Which of the following statements is/are true?
A. Rigidity: It is property of matter to allow a decrease in volume under high pressure and gases show this property.
B. Fluidity. It is the property of a substance to easily flow and allow change in its shape under external force and this property is exhibited both by liquids and gasses.
1) Only A is true
2) Only B is true
3) A and B are both true
4) A and B are both false

10. ____is the chemical name of slaked lime.
1) Cao 
2) Ca(OH)2
3) CaCl2 
4) CaCO3

11. When the litmus solution is neither acidic nor basic, its colour is:
1) Pink 
2) Colourless
3) Purple 
4) Blue

12. _____metal reacts violently with cold water.
1) Cu 
2) Al
3) Na 
4) Zn

13. Which of the following is NOT an allotropes of carbon?
1) Diamond 
2) Graphite
3) Fullerene 
4) Coal

14. The electronic configuration of three elements X, Y and Z are (2,8,7) , (2,8,2) and (2,8,8) respectively. Then element Z is a ____.
1) metalloid 
2) non metal
3) metal 
4) inert gas

15. In the Modern Periodic Table, period ____is an INCOMPLETE period.
1) 4 
2) 5 
3) 6
4) 7

16. Sieve tube and companion cells are mainly responsible for the transport of:
1) water to leaf
2) sunlight to plant/tree
3) food in human bodies
4) food in plants

17. ____tissue forms glands.
1) Muscle
2) Connective
3) Nervous 
4) Epithelial

18. ____takes place with the help of oxygen and is responsible for the complete breakdown of glucose into CO2 and H2O
1) Lungs
2) Heart
3) Anaerobic respiration
4) Aerobic respiration

19. Egg-laying animals are called:
1) Viviparous
2) Oviparous
3) Unicellular 
4) Mitosis

Answers :
1) 4 2) 2 3) 3 4) 3 5) 3
6) 4 7) 1 8) 3 9) 2 10) 2
11) 3 12) 3 13) 4 14) 4 15) 1
16) 4 17) 4 18) 4 19) 2

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