General Science MCQ Solved Paper for RRB JE

1. The property of a substance to absorb moisture from the air on exposure is called
A. Desiccation
B. Efflorescence
C. Deliquescene
D. Osmosis
Answer : C

2. In an atomic nucleus, neutrons and protons are held together by
A. Magnetic forces
B. Gravitational forces
C. Coulombic forces
D. Exchange forces
Answer : D

3. The location and energy of an electron in an atom can be specified by
A. Atomic number
B. Atomic mass
C. Quantum numbers
D. None of these
Answer : C

4. According to Daltons atomic theory the smallest particle which can exist independently is
A. An atom
B. A cation
C. A molecule
D. An anion
Answer : A

5. Apparatus invented by Archimedes is :
A. Pulley
B. Microscope
C. Thermemoter
D. Barometer
Answer : A

6. Which of the following items will be attracted to the north pole of a permanent magnet by a magnet force?
A. A piece of iron that is not a permanent magnet
B. The north pole of another permanent magnet
C. A positively charged glass rod
D. A negatively charged rubber rod
Answer : A

7. The oxide of Nitrogen used in medicine as anaesthetic is
A. Nitric oxide
B. Nitrogen dioxide
C. Nitrogen pentoxide
D. Nitrous oxide
Answer : C

8. Water has maximum density at
A. 0°C
B. -4°C
C. 100°C
D. 4°C
Answer : D

9. The metallic constituents of hard water are
A. Calcium, magnesium and iron
B. Magnesium, Calcium and tin
C. Magnesium, tin and iron
D. Iron, tin and calcium
Answer : A

10. The recent atomic weight scale is based on
A. 1H1
B. 1H2
C. 6C12
D. 8O16
Answer : C

11. One fathom is equal to
A. 6 feet
B. 6 metres
C. 60 cms
D. 60 feet
Answer : A

12. The colour of Emerald is
A. Deep Green
B. Violet
C. Prussian Blue
D. Yellow
Answer : A

13. Earth's seasons are caused by which of the following?
A. The varying amount of sunspot activity
B. The tilt of the earth's rotation relative to the ecliptic as earth revolves around the sun
C. The earth's orbit around the sun as an exlipse rather than a circle
D. The rotation of during a 24-hour day
Answer : B

14. Which of the following is most likely to cause a rise in the average temperature of earth's atmosphere in future?
A. Atomic warfare
B. Depletion of earth's ozone layer
C. CO2 from fossil fuels
D. Dust clouds from valcanoes
Answer : C

15. Rust is
A. A mixture of FeO and Fe(OH)2
B. A mixture of Fe2O3 and Fe(OH)2
C. A mixture of Fe2O3, 3H2O and FeO
D. FeO only
Answer : C

16. The speed of light with the rise in the temperature of the medium
A. Increases
B. Remains unaltered
C. Drops sharply
D. Decreases
Answer : B

17. Which of the following parts of the sun is easily visible only during a total solar eclipse?
A. core
B. photosphere
C. sunspots
D. corona
Answer : D

18. The fastest-running terrestrial animal is
A. lion
B. man
C. jaguar
D. cheetah
Answer : D

19. Nitrification means
A. Conversion of nitrogen to nitric acid.
B. Production of nitrogen from air
C. Convert the atmospheric nitrogen to effective nitrogen compound.
D. Liquifaction of nitrogen
Answer : C

20. Cell membrane is
A. permeable
B. semipermeable
C. selectively permeable
D. impermeable
Answer : B

21. What is the unit for measuring the pitch or frequency of sound ?
A. Coulomb
B. Hum
C. Cycles
D. Decible
Answer : D

22. The solar eclipse occurs when
A. the sun comes in between the moon and the earth
B. the moon comes in between the sun and the earth
C. the earth comes in the between the sun and the moon
D. None of the above
Answer : B

23. The marine animal called dugong which is vulnerable to extinction is a/an
A. Amphibian
B. Shark
C. Bony fish
D. Mammal
Answer : D

24. Polythene is industrially prepared by the polymerisation of
A. styrene
B. methane
C. ethylene
D. acetylene
Answer : C

25. The Panda belongs to the same family as that of
A. Cat
B. Bear
C. Rabbit
D. Dog
Answer : B

26. The type of glass used in making prisms and lenses is
A. Pyrex glass
B. Soft glass
C. Flint glass
D. Jena glass
Answer : C

27. Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous glass called
A. Carbon Monoxide
B. Phosgene
C. Phosphine
D. None of these
Answer : D

28. The removal of top soil by water or wind is called
A. Soil erosion
B. Soil wash
C. Silting of soil
D. Soil creep
Answer : A

29. Which of the following is commonly called a polyamide ?
A. Orion
B. Terylene
C. Rayon
D. Nylon
Answer : D

30. Pollination by birds is called
A. autogamy
B. entomophily
C. anemophily
D. ornithophily
Answer : D

31. Which of the following is in liquid form at room temperature ?
A. Sodium
B. Cerium
C. Francium
D. Lithium
Answer : C

32. Which of the following elements is obtained from sea weeds ?
A. Argon
B. Vanadium
C. Iodine
D. Sulphur
Answer : C

33. The metal that is present in Photo Films is
A. Silver
B. Magnesium
C. Platinium
D. Mercury
Answer : A

34. The smallest functional and structural unit of kidney is called as
A. Granulocyte
B. Neuron
C. Reticulocyte
D. Nephron
Answer : D

35. The chemial name of Uria is
A. Carbamide
B. Chloroetane
C. Aneurin
D. None of these
Answer : A

36. The most important ore of Aluminium is
A. Calamine
B. Calcite
C. Galena
D. Bauxite
Answer : D

37. The metal used in storage batteries
A. Zinc
B. Iron
C. Copper
D. Lead
Answer : D

38. The formula of Plaster of Paris is
A. 2CaSO4, H2O
B. CaSO4
C. CaSO4, 2H2O
D. 2CaSO4, 4H2O
Answer : A

39. Glass is made from the mixture of
A. Quartz and mica
B. Sand and salt
C. Sand and silicates
D. None of these
Answer : C

40. Permanent hardness of water can be removed by adding
A. Potassium Permanganate
B. Bleaching Powder
C. Chlorine
D. Washing Soda
Answer : D

41. Which of the following characters is not shown by hydrogen
A. It burns in air to form water
B. It supports combustion
C. It readily combines with fluorine and chlorine
D. It combines with almost all metals forming hydrides
Answer : B

42. Which of the following elements is a metal
A. S
B. Ga
C. Se
D. I
Answer : B

43. The accumulation of stress along the boundaries of lithospheric plates results in which of the following?
A. Earthquakes
B. Magnetic reversals
C. Hurricanses
D. Increased deposition of deep-sea sediments
Answer : A

44. In a certain electronic circuit the output is positive if input 1 is positive and input 2 is zero. If both inputs are positive the output is zero. This is
A. an AND circuit
B. an OR circuit
C. a high-pass filter
D. a NOR circuit
Answer : B

45. Old-written material, which cannot be read easily can be read by
A. None of these
B. Ultraviolet rays
C. Infra Red rays
D. Cosmic Rays
Answer : A

46. When a gas is turned into a liquid, the process is called
A. evaporation
B. condensation
C. sublimation
D. deposition
Answer : B

47. Quartz crystals normally used in quartz clocks etc. is chemically
A. A mixture of B and C
B. Silicon dioxide
C. Germenium dioxide
D. Sodium Silicate
Answer : B

48. Which of the following elements is non-radioactive?
A. Uranium
B. Plutonium
C. Thorium
D. Zirconium
Answer : D

49. Bromine is
A. A Black solid
B. A red liquid
C. A highly inflammable gas
D. colourless gas insoluble in water
Answer : B

50. The major ingredient of leather is
A. Nucleic acid
B. Carbohydrate
C. Collagen
D. Polymer
Answer : C