General Science MCQ Solved Paper for SSC JHT

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

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

3. 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

4. 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

5. Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of
A. Sulphonates
B. Zeolites
C. Nitrates
D. None of these
Answer : B

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

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

8. Lightening cause rainfall because
A. It activate H2O molecule
B. Photo-electricity reaction starts
C. Some of the gas molecules become bigger
D. It cause combination of oxygen and nitrogen
Answer : A

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

10. 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

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

12. Epoxy resins is used as
A. Adhesives
B. Detergents
C. Insecticides
D. Moth repellants
Answer : A

13. 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

14. 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

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

16. The hardest substance available on earth is
A. Platinum
B. Quartz
C. gold
D. Diamond
Answer : D

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

18. 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

19. The intencity of Earthquakes is measured on
A. Beaufort scale
B. Secant scale
C. Mercalli scale
D. Richter scale
Answer : D

20. Which of the following is the lightest metal ?
A. Mercury
B. Lithium
C. Lead
D. Silver
Answer : B

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

22. 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

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

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

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

27. 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

28. Liquefied Petroleum gas (LPG) consists of mainly
A. Methane, Butane and Propane
B. Methane, Ethane and Hexane
C. Ethane, Hexane and Nonane
D. Methane, Hexane and Nonane
Answer : A

29. 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

30. 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

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

32. The fastest acting enzyme in the biological kingdom is
A. amylase
B. lipase
C. carboxypeptidase
D. carbonic anhydrase
Answer : D

33. 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

34. 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

35. 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

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

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

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

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

40. The element present in the largest amount in rocks and minerals is
A. Carbon
B. Hydrogen
C. Aluminium
D. Silicon
Answer : D

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

42. 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

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. 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

45. 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

46. 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

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

48. 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

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

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