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SSC CHSL TOPIC WISE QUESTION PAPER : GENERAL SCIENCE

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1. Which part of the plant is used as 'saffron'? (SSC CHSL 2012)

(a) Petals
(b) Stamens
(c) Style and Stigma
(d) Sepals

ANS (C)

2. Suspended colloidal particles in the water can be removed by the process of : (SSC CHSL 2012)

(a) Filtration
(b) Adsorption
(c) Absorption
(d) Coagulation

ANS (D)

3. Grave's disease is caused due to: (SSC CHSL 2012)

(a) hyperactivity of thyroid
(b) hypoactivity of thymus
(c) hypoactivity of thyroid
(d) hyperactivity of thymus

ANS (A)

4. A white solid ‘A’ on heating gives off a gas which turns lime water milky. The residue is yellow when hot but turns white on cooling. The solid A is: (SSC CHSL 2012)

(a) Zinc Carbonate
(b) Lead Sulphate
(c) Lead Carbonate
(d) Zinc Sulphate

ANS (A)

5. Which of the following is the strongest coagulant ? (SSC CHSL 2012)

(a) Zinc Chloride
(b) Aluminium Chloride
(c) Barium Chloride
(d) Magnesium Sulphate

ANS (B)

6. The property which is seen in light wave but not in sound wave is : (SSC CHSL 2012)

(a) Diffraction
(b) Refraction
(c) Polarization
(d) Interference

ANS (C)

7. Iron and manganese are removed in water by the process of : (SSC CHSL 2012)

(a) Chlorination
(b) Filtration
(c) Lime-soda treatment
(d) Aeration

ANS (D)

8. Which enzyme is obtained from Red gram ? (SSC CHSL 2012)

(a) Zymase
(b) Maltase
(c) Diastase
(d) Urease

ANS (D)

9. A radioactive substance has a half-life of four months. Three-fourth of the substance will decay in:(SSC CHSL 2012)

(a) 8 months
(b ) 12 months
(c) 4 months
(d) 6 months

ANS (A)

10. Chiropterophily means: (SSC CHSL 2012)

(a) production of flowers
(b) pollination by wind
(c) pollination by bat
(d) production of leaves

ANS (C)

11. Which one among the following is a solid lubricant ? (SSC CHSL 2012)

(a) Germanium
(b) Sulphur
(c) Graphite
(d) Indium

ANS (C)

12. Longest cell in human body is: (SSC CHSL 2012)

(a) Blood cell
(b) Bone cell
(c) Nerve cell
(d) Muscle cell

ANS (C)

13. The acid rain destroys the vegetation because it contains: (SSC CHSL 2012)

(a) Ozone
(b) Carbon monoxide
(c) Sulphuric acid
(d) Nitrates

ANS (C)

14. Activated sludge treatment is called: (SSC CHSL 2012)

(a) Preliminary treatment
(b) Biological treatment
(c) Pre treatment
(d) Chemical treatment

ANS (B)

15. Caustic soda is : (SSC CHSL 2012)

(a) deliquescent
(b) oxidant
(c) reductant
(d) efflorescent

ANS (A)

16. Red light is used in traffic signal for stopping the traffic because: (SSC CHSL 2012)

(a) eye is more sensitive to red light.
(b) it is least scattered and hence can be easily noticed from long distance.
(c) it is very pleasant to the eye.
(d) it is visible even to longsighted people.

ANS (B)

17. What is a neuron ? (SSC CHSL 2013)

(a) Basic unit of nervous system
(b) Basic unit of energy
(c) Particle released during radioactivity
(d) The anti-particle of neutron

ANS (A)

18. A cellulosic wall is found in the cells of (SSC CHSL 2013)

(a) plants
(b) animals
(c) bacteria
(d) fungi

ANS (A)

19. The filtration unit of kidney is (SSC CHSL 2013)

(a) yellow fiber
(b) axon
(c) nephron
(d) neuron

ANS (C)

20. The nutritive tissue in the seeds of higher plants is known as (SSC CHSL 2013)

(a) nucellus
(b) hypocotyl
(c) embryo
(d) endosperm

ANS (D)

21. Yeast is an important source of (SSC CHSL 2013)

(a) protein
(b) vitamin B
(c) invertase
(d) vitamin C

ANS (B)

22. Enzymes are (SSC CHSL 2013)

(a) Lipids
(b) Steroids
(c) Carbohydrates
(d) Proteins

ANS (D)

23. Heating of a ore below its melting point in the absence of air is known as (SSC CHSL 2013)

(a) Smelting
(b) Refining
(c) Calcination
(d) Roasting

ANS (C)

24. The most electronegative element among the following is (SSC CHSL 2013)

(a) Oxygen
(b) Fluorine
(c) Sodium
(d) Chlorine

ANS (B)

25. Mark the compound which possesses ionic, covalent and co-ordinate bonds. (SSC CHSL 2013)

(a) H2O |
(b) NH4C1
(c) SO3
(d) S02

ANS (B)

26. The depletion of Ozone layer is mainly due to (SSC CHSL 2013)

(a) Chlorofluorocarbons
(b) Volcanic eruptions
(c) Aviation fuels
(d) Radioactive rays

ANS (A)

27. Match correctly the infectious agents given in List I with the diseases caused by them given in List II : (SSC CHSL 2013)
List I List II
a. Bacterium 1. Kala-azar
b. Fungus 2. Tuberculosis
c. Protozoan 3 Influenza
d. Virus 4. Ringworm

(a) a-4, b-2, c-3, d-1 (b) a-1, b-2, c-4, d-3
(c) a-2, b-4, c-1, d-3 (d) a-3, b-1, c-2, d-4

ANS (C)

28. Matter waves are (SSC CHSL 2013)

(a) Longitudinal waves
(b) de Broglie waves
(c) Electromagnetic waves
(d) Transverse waves

ANS (B)

29. When the milk is churned vigorously the cream from it is separated out due to (SSC CHSL 2013)

(a) Centrifugal force
(b) Centripetal force
(c) Gravitational force
(d) Frictional force

ANS (A)

30. Gas thermometers are more sensitive than the liquid thermometers because the gases (SSC CHSL 2013)

(a) have high specific heat
(b) have large coefficient of expansion
(c) are lighter
(d) have low specific heat

ANS (B)

327. Which of the following is not caused by atmospheric refraction of light ? (SSC CHSL 2013)

(a) Sun becoming visible two or three minutes before actual sunrise
(b) Sun appearing red at sunset
(c) Twinkling of stars at night
(d) Sun appearing higher in the sky than it actually is

ANS (B)

31. From which part of Opium Plant we get morphine ? (SSC CHSL 2014)

(a) Leaves
(b) Stem
(c) Bark
(d) Fruit coat

ANS (D)

32. Which of the following is a Biological method of soil conservation ? (SSC CHSL 2014)

(a) Contour farming
(b) Contour terracing
(c) Gully control
(d) Basin listing

ANS (A)

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33. Glucose is a type of (SSC CHSL 2014)

(a) Pentose sugar
(b) Hexose sugar
(c) Tetrose sugar
(d) Diose sugar

ANS (B)

334. Number of mitochondria in bacterial cell is (SSC CHSL 2014)

(a) one
(b) two
(c) many
(d) zero

ANS (D)

35. Rainbow is formed due to (SSC CHSL 2014)

(a) refraction and dispersion
(b) scattering and refraction
(c) diffraction and refraction
(d) refraction and reflection

ANS (D)

36. Golden view of sea shell is due to (SSC CHSL 2014)

(a) Diffraction
(b) Dispersion
(c) Polarization
(d) Reflection

ANS (C)

37. An object covers distance which is directly proportional to the square of the time. Its acceleration is (SSC CHSL 2014)

(a) increasing
(b) decreasing
(c) zero
(d) constant

ANS (D)

38. If the horizontal range of a projectile is four times its maximum height, the angle of projection is (SSC CHSL 2014)

(a) 30°
(b) 45°
(c) 1 1 sin 4- æ ö ç ÷è ø
(d) 1 1tan4- æ ö ç ÷è

ANS (B)

39. Which of the following metals has least melting point ? (SSC CHSL 2014)

(a) Gold
(b) Silver
(c) Mercury
(d) Copper

ANS (C)

40. The gas produced in marshy places due to decomposition of vegetation is (SSC CHSL 2014)

(a) Carbon monoxide
(b) Carbon dioxide
(c) Sulphur dioxide
(d) Methane

ANS (D)

41. In cactue, the spines are the modified (SSC CHSL 2014)

(a) stem
(b) sripules
(c) leaves
(d) buds

ANS (C)

42. The smallest known prokaryotic organism is (SSC CHSL 2014)

(a) Microcystis
(b) Mycoplasma
(c) Bacteria
(d) Chlorella

ANS (B)

43. According to your text, what can "be thought of as the genetic library that keep life going on Earth" ? (SSC CHSL 2014)

(a) A bio-engineering lab
(b) Human genes
(c) The human genome project
(d) Biodiversity

ANS (D)

44. The boiling point of water decreases at higher altiudes is due to (SSC CHSL 2014)

(a) low tenperature
(b) low atmospheric pressure
(c) high temperature
(d) high atmospheric pressure

ANS (B)

45. The chemical name of "Hypo"commonly used in photography is (SSC CHSL 2014)

(a) Sodium thiosulphate
(b) Silver nitrate
(c) Sodium nitrate
(d) Silver iodide

ANS (A)

46. Soldering of two metals is possible because of the property of : (SSC CHSL 2015)

(a) Osmosis
(b) Viscosity
(c) Surface tension
(d) Cohesion

ANS (D)

47. Stalactites & Stalagmites form due to the precipitation of : (SSC CHSL 2015)

(a) CaCl2
(b) MgCO3
(c) MgCl2
(d) CaCO3

ANS (D)

48. Which of the following is a form of sexual reproduction : (SSC CHSL 2015)

(a) Fission
(b) Fragmentation
(c) Budding
(d) Harmaphroditism

ANS (D)

49. In which region of electromagnetic spectrum does the Lyman series of hydrogen atom lie ? (SSC CHSL 2015)

(a) x–ray
(b) Ultraviolet
(c) Visible
(d) Infrared

ANS (B)

50. An electrochemcial cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a : (SSC CHSL 2015)

(a) Power transistor
(b) Battery
(c) Generator
(d) Uninterrupted power supply (UPS)

ANS (B)

51. A light wave is incident over a plane surface with velocity X. After reflection the velocity becomes : (SSC CHSL 2015)

(a) x
(b) 2x
(c) x 4
(d)x2

ANS (B)

52. The area reserved for the welfare of wild life is called (SSC CHSL 2015)

(a) Sanctuary
(b) Botanical garden
(c) Forest
(d) National pak

ANS (D)

53. The gas dissolved in water that makes it basic is ? (SSC CHSL 2015)

(a) ammonia
(b) hydrogen
(c) sulphur dioxide
(d) carbon dioxide

ANS (A)

54. Yellow complexion, Medium stature, Oblique eye with an epicanthic fold is the characteristic feature of :(SSC CHSL 2015)

(a) Australoids
(b) Negroid
(c) Mengoloid
(d) Cancosoid

ANS (C)

55. Chromosome designation of Turner syndrome is : (SSC CHSL 2015)

(a) 44A + XO
(b) 44A + XXY
(c) 44A + XXX
(d) 44A + XYY

ANS (A)

56. Distant objects are visible as a little out of focus in this condition : (SSC CHSL 2015)

(a) hypermetropia
(b) presbiopia
(c) astigmatism
(d) myopia

ANS (D)

57. Maximum oxygen is available from : (SSC CHSL 2015)

(a) Green forests
(b) Deserts
(c) Grass lands
(d) Phytoplanktons

ANS (D)

58. In a reaction of the type A + B ® C + D one could ensure it to be a first order reaction by : (SSC CHSL 2015)

(a) Increasing the concentration of a reactant
(b) Adding a catalyst
(c) Increasing the temperature
(d) Increasing the concentration of a product

ANS (A)

59. The amount of matter in a ball of steel is its : (SSC CHSL 2015)

(a) Mass
(b) Density
(c) Volume
(d) Weight

ANS (A)

60. Transpiration increases in : (SSC CHSL 2015)

(a) Hot, damp and windy condition
(b) Cool, damp and windy condition
(c) Cool, dry and still condition
(d) Hot, dry and windy condition

ANS (D)

61. If xylem and phloem are arranged in the same radius, such a vascular bundle is called : (SSC CHSL 2015)

(a) bicollateral
(b) concentric
(c) radial
(d) collateral

ANS (D)

62. Plank's constant has the dimensions of : (SSC CHSL 2015)

(a) linear momentum
(b) angular momentum
(c) force
(d) energy

ANS (B)

63. The most abundant element by number in the living system is : (SSC CHSL 2015)

(a) Hydrogen
(b) Oxygen
(c) Carbon
(d) Nitrogen

ANS (A)

64. Which of the following phenomenon helps to conclude that light is a transverse wave ? (SSC CHSL 2015)

(a) diffraction
(b) polarisation
(c) refraction
(d) interference

ANS (B)

65. Among the following districts of Tamil Nadu, which district is unfit for cultivation due to increased salinity : (SSC CHSL 2015)

(a) Tiruchirapalli
(b) Negapattinam
(c) Ramanathapuram
(d) Coimbatore

ANS (C)

66. Natural system of classification was proposed by ____botanists. (SSC CHSL 2015)

(a) German
(b) Swedish
(c) British
(d) Indian

ANS (B)

67. Minamata disease is caused by pollution of water by :(SSC CHSL 2015)

(a) tin
(b) methyl isocyanate
(c) mercury
(d) lead

ANS (C)

68. The "King of Metals" is : (SSC CHSL 2015)

(a) Silver
(b) Iron
(c) Aluminium
(d) Gold

ANS (D)

69. Amino acids are required for the synthesis of : (SSC CHSL 2015)

(a) Lipids
(b) Proteins
(c) Carbohydrates
(d) Alkaloids

ANS (B)

70. The most suitable unit for expressing nuclear radius is: (SSC CHSL 2015)

(a) fermi
(b) angstrom
(c) micron
(d) nanometre

ANS (A)

71. Blowing Air with open pipe is an example of :(SSC CHSL 2015)

(a) Isochoric Process
(b) Isobaric process
(c) Adiabatic process
(d) Isothermal process

ANS (B)

72. Christmas factor is involved in : (SSC CHSL 2015)

(a) Excretion
(b) Digestion
(c) Respiration
(d) Blood Coagulation

ANS (D)

73. Who is the author of the book “Romancing with Life ”.(SSC CHSL 2015)

(a) Dev Anand
(b) Shashi Tharoor
(c) Bill Clinton
(d) Kapil Dev

ANS (A)

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