---

SSC CPO TOPIC WISE QUESTION PAPER : GENERAL SCIENCE

---

1. The red colour of ripe tomatoes is due to the presence of (SSC Sub. Ins. 2012)

(a) Hormones
(b) Vitamins
(c) Chlorophyll
(d) Carotenoids

ANS (D)

2. Anticoagulants are not present in (SSC Sub. Ins. 2012)

(a) Mosquito
(b) Bed bug
(c) Leech
(d) Wasp

ANS (D)

3. Vegetation is effective in absorbing (SSC Sub. Ins. 2012)

(a) Pollutant gases
(b) Polluted water
(c) High frequency sound
(d) Pollutant metals

ANS (A)

4. When a person cries, there is a watery discharge from the nose due to activation of (SSC Sub. Ins. 2012)

(a) Salivary gland
(b) Lachrymal gland
(c) Thyroid gland
(d) Endocrine gland

ANS (B)

5. The fundamental role of root hairs in plants is (SSC Sub. Ins. 2012)

(a) to protect the young root from damage by coarse soild particles
(b) to protect the root from soil microbes
(c) to absorb water and mineral salts from the soil
(d) to bind soil particles to the root for firm fixation of the plant

ANS (C)

6. Catch crops are (SSC Sub. Ins. 2012)

(a) crops palnted to attract certain insect pests to be destroyed
(b) crops planted to attract certain useful insects to be used for biological control of pests
(c) crops to be cut and fed green to the cattle
(d) substitute crops planted after the regular crop has failed.

ANS (D)

7. The pigment that protects plants form UV damage is (SSC Sub. Ins. 2012)

(a) Chlorophyll
(b) Xanthophyll
(c) Phycocyanin
(d) Carotenoids

ANS (D)

8. A bioenergy source obtained by fermentation to supplement fossil fuel petrol is (SSC Sub. Ins. 2012)

(a) Kerosene
(b) Ethanol
(c) Diesel
(d) Methane

ANS (D)

10. The substance that causes the worst air pollution is (SSC Sub. Ins. 2012)

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

ANS (D)

11. A liquid is said to boil when its (SSC Sub. Ins. 2012)

(a) vapour pressure equals the surrounding pressure
(b) vapour pressure vanishes to zero
(c) vapour pressure is greater than the surrounding pressure
(d) vapour pressure is less than the surrounding pressure

ANS (A)

12. Which is not correct regarding covalent compounds? (SSC Sub. Ins. 2012)

(a) The reaction is slow
(b) The reaction is fast
(c) Compounds are usually liquids and gases
(d) Boiling points and melting points are low

ANS (B)

13. Choose the correct statement (SSC Sub. Ins. 2012)

(a) The components of a mixture cannot be separated
(b) The properties of a mixture are the same as those of its components
(c) Mixtures are homogeneous
(d) In a mixture the components are present in a fixed ratio 72 General Science

ANS (B)

14. PVC is obtained by the polymerisation of (SSC Sub. Ins. 2012)

(a) Propene
(b) Vinyl chloride
(c) Styrene
(d) Acetylene

ANS (A)

16. To eliminate the glare of headlights in motor cars, (SSC Sub. Ins. 2012)

(a) polaroids are used
(b) glass prisms are used
(c) thin films are used
(d) filters are used

ANS (A)

17. The substances which have infinite electrical resistance are called (SSC Sub. Ins. 2012)

(a) insulators
(b) condensers
(c) conductors
(d) resistors

ANS (A)

18. Stainless steel is an alloy of (SSC Sub. Ins. 2012)

(a) iron, chromium and nickel
(b) iron, chromium and carbon
(c) iron, carbon and zinc
(d) iron, zinc and manganese

ANS (A)

19. Enriched uranium used in a nuclear reactor is (SSC Sub. Ins. 2012)

(a) uranium free of all impurities
(b) uranium treated with radiation
(c) uranium alloyed with aluminium
(d) uranium with a high percentage of a particular isotope

ANS (D)

20. In a refrigerator, cooling is produced by (SSC Sub. Ins. 2012)

(a) the ice which deposits in the freezer
(b) the sudden expansion of a compressed gas
(c) the evaporation of a volatile liquid
(d) None of these

ANS (C)

21. Which one of the following statements about PYROLYSIS. which is a process for solid waste treatment is incorrect? (SSC Sub. Ins. 2013)

(a) It converts the waste into solid, liquid and gas of which the resultant liquid and gas can be used to produce energy.
(b) The process occurs at a temperature above 430°C at atmospheric pressure.
(c) The process occurs under high pressure at temperature above 430°C.
(d) It is a thermochemical decomposition of organic waste

ANS (B)

22. Which of the following supports particle nature of photons? (SSC Sub. Ins. 2013)

(a) Diffraction
(b) Polarization
(c) Photoelectric effect
(d) Interference

ANS (C)

23. The heaviest naturally occurring element is: (SSC Sub. Ins. 2013)

(a) Mercury
(b) Polonium
(c) Thorium
(d) Uranium

ANS (D)

24. Haptens are: (SSC Sub. Ins. 2013)

(a) Pseudoantigens
(b) Incomplete antigens
(c) Antibodies
(d) Isoantigens

ANS (B)

25. Sulphur dioxide bleaches colouring matter by : (SSC Sub. Ins. 2013)

(a) Reduction
(b) Dehydration
(c) Decomposition
(d) Oxidation

ANS (A)

26. Which of the following elements is not radio-active? (SSC Sub. Ins. 2013)

(a) Radium
(b) Plutonium
(c) Zirconium
(d) Uranium

ANS (C)

27. Wilting of plants occurs due to excessive : (SSC Sub. Ins. 2013)

(a) Respiration
(b) Guttation
(c) Absorption
(d) Transpiration

ANS (D)

28. Gypsum is used for improvement of: (SSC Sub. Ins. 2013)

(a) Alkaline soils
(b) Saline soils
(c) Podsols
(d) Acidic soils

ANS (B)

29.. Indicate the correct arrangement for electromagnetic radiation in order of their increasing wavelength. (SSC Sub. Ins. 2013)

(a) Microwave. infrared, visible. X-rays
(b) X -rays. visible, infrared, microwave
(c) Visible. infrared. microwave. X-rays
(d) X - rays, infrared, visible, microwave.

ANS (D)

30. The rapidly growing mass of phytoplankton covering the surface water of a lake or pond is known as: (SSC Sub. Ins. 2013)

(a) Eutrophication
(b) Water bloom
(c) Water pollution
(d) Water hyacinth

ANS (A)

31.. Wings of birds are: (SSC Sub. Ins. 2013)

(a) Modified hind limbs
(b) New structure
(c) Integumentary outgrowth
(d) Modified fore limbs

ANS (D)

32. Spontaneous change is one in there is: (SSC Sub. Ins. 2013)

(a) A lowering of entropy
(b) A lowering of free energy
(c) Increase in free energy
(d) An increase in Internal energy

ANS (B)

33. Sandstone is metamorphosed to : (SSC Sub. Ins. 2013)

(a) Shale
(b) Slate
(c) Quartzite
(d) Marble

ANS (C)

34. Instrument used to study the behaviour of a vibrating string is : (SSC Sub. Ins. 2013)

(a) Barometer
(b) Hydrometer
(c) Hygrometer
(d) Sonometer

ANS (D)

35. The casual organism of Polio is : (SSC Sub. Ins. 2013)

(a) A fungi
(b) A virus
(c) A worm
(d) A bacteria

ANS (B)

36. Panda belongs to the same family as that (SSC Sub. Ins. 2013)

(a) Kangaroo
(b) Porcupine
(c) Whale
(d) Bear

ANS (D)

37. The pancreas secretes (SSC Sub. Ins. 2014)

(a) Insulin
(b) Bile juice
(c) Peptic juice
(d) None of these

ANS (A)

Study Kit For SSC Exam for Sub-Inspectors in Delhi Police & CAPFs, CISF

38. When we touch leaves of "Touch me not plant", they close, these movements are called (SSC Sub. Ins. 2014)

(a) photonastic movements
(b) nyctinastic movements
(c) seismonastic movements
(d) chemonastic movements

ANS (B)

39. The concept of tissue culture was introduced by (SSC Sub. Ins. 2014)

(a) Halfmeister
(b) Hanstein
(c) Haberlandt
(d) Hanning

ANS (C)

40. Beak is formed by (SSC Sub. Ins. 2014)

(a) cheeks
(b) jaws
(c) teeth
(d) none

ANS (D)

41. Pinna (external ear) is present in (SSC Sub. Ins. 2014)

(a) Amphibian
(b) Fish
(c) Mammal
(d) Reptile

ANS (C)

42. Purity of a metal can be determined with the help of

(a) Pascal's law (SSC Sub. Ins. 2014)
(b) Boyle's law
(c) Archimedes principle
(d) Conservation of mass principle

ANS (C)

43. If both the mass and the velocity of a body is increased to twice of their magnitude, the kinetic energy will increase by (SSC Sub. Ins. 2014)

(a) 2 times
(b) 4 times
(c) 8 times
(d) 16 times

ANS (C)

44. Two bodies kept at a certain distance feel a gravitational force F to each other. If the distance between them is made double the former distance, the force will be (SSC Sub. Ins. 2014)

(a) 2F
(b)1/2F
(c) 4F
(d) 1/4F

ANS (D)

45. Stationary wave is formed by (SSC Sub. Ins. 2014)

(a) a transverse wave superposing a longitudinal wave
(b) two waves of the same speed superposing
(c) two waves of same frequency travelling in the same direction
(d) two waves of same frequency travelling in the opposite direction

ANS (D)

46. In an oxygen molecule, two atoms are united by (SSC Sub. Ins. 2014)

(a) the bond
(b) two bonds
(c) three bonds
(d) four bonds

ANS (B)

47. The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing is (SSC Sub. Ins. 2014)

(a) Neon
(b) Krypton
(c) Argon
(d) Helium

ANS (D)

48. How many neutrons are there in 92U238 atom ? (SSC Sub. Ins. 2014)

(a) 92
(b) 238
(c) 146
(d) 330

ANS (C)

49. Root pressure is measured by (SSC Sub. Ins. 2014)

(a) Barometer
(b) Atmometer
(c) Manometer
(d) Auxanometer

ANS (D)

50. Cell becomes turgid because of (SSC Sub. Ins. 2014)

(a) Plasmolysis
(b) Exosmosis
(c) Endosmosis
(d) Diffusion

ANS (C)

51. The process of imbibition involves (SSC Sub. Ins. 2014)

(a) Diffusion
(b) Capillary action
(c) Absorption
(d) Both (A) & (B)

ANS (C)

52. A cell increases in volume when it is placed in (SSC Sub. Ins. 2014)

(a) Hypertonic solution
(b) Hypotonic solution
(c) Isotonic solution
(d) None of these

ANS (B)

53. A reversible and an irreversible engine are working between the same limits of temperature. The efficiency of. (SSC Sub. Ins. 2015)

(a) The reversible engine is greater than the irreversible engine.
(b) Each engine is 100%.
(c) The two engines are equal
(d) The irreversible engine is greater than the reversible engine.

ANS (D)

54.Which of the following is used in the treatment of cancer? (SSC Sub. Ins. 2015)

(a) Electrotherapy
(b) Psychotherapy
(c) Chemotherapy
(d) Physiotherapy

ANS (C)

56. The most abundant element is : (SSC Sub. Ins. 2015)

(a) Silicon
(b) Calcium
(c) Nitrogen
(d) Oxygen

ANS (D)

57. An electron microscope gives higher magnifications than an optical microscope because : (SSC Sub. Ins. 2015)

(a) The electrons have more energy than the light particles.
(b) The electron microscope uses more powerful lenses.
(c) The wavelength of electrons is smaller as compared to the wavelength of visible light.
(d) The velocity of electrons is smaller than that of light.

ANS (C)

58. What does the word ‘amphibian’ mean ? (SSC Sub. Ins. 2015)

(a) Two lives
(b) Four lives
(c) Three lives
(d) One life

ANS (A)

59. Nitrogen in water is commonly found in the form of: (SSC Sub. Ins. 2015)

(a) Nitric oxide
(b) Nitrous oxide
(c) Nitrate
(d) Nitrite

ANS (C)

60. Immunization technique was developed by: (SSC Sub. Ins. 2015)

(a) Louis Pasteur
(b) Robert Koch
(c) Joseph Lister
(d) Edward jenner

ANS (D)

61. The hydrophilic nature of DNA is due to the presence of. (SSC Sub. Ins. 2015)

(a) a number of hydrogen bonds
(b) phosphate group
(c) deoxyribose sugar
(d) thymine base

ANS (C)

62. The sense of balance is achieved by: (SSC Sub. Ins. 2015)

(a) Cerebellum equilibrium
(b) Thalamus equilibrium
(c) Cerebrum equilibrium
(d) Spinal cord equilibrium

ANS (A)

63. Aluminium salt commonly used to stop bleeding is: (SSC Sub. Ins. 2015)

(a) Aluminium chloride
(b) Aluminium nitrate
(c) Aluminium sulphate
(d) Potash alum

ANS (D)

64. Total internal reflection cannot take place when light goes from: (SSC Sub. Ins. 2015)

(a) water to glass
(b) water to air
(c) glass to air
(d) glass to water

ANS (A)

65. Interferons are synthesized in response to: (SSC Sub. Ins. 2015)

(a) mycoplasma
(b) fungi
(c) virus
(d) bacteria

ANS (C)

66. The first law of thermodynamics is simply the case of: (SSC Sub. Ins. 2015)

(a) Charle’s law.
(b) the law of conservation of energy.
(c) the law of heat exchange.
(d) Newton’s law of cooling.

ANS (B)

67. Red rot of sugarcane is caused by: (SSC Sub. Ins. 2015)

(a) Colletotriehum falcatum
(b) Cercospora personata
(c) Alternaria alternata
(d) Phylophthora Infestans

ANS (A)

68. A clone is a group of individuals obtained through : (SSC Sub. Ins. 2015)

(a) self pollination
(b) micropropagation
(c) hybridisation
(d) cross pollination

ANS (A)

69. Chemical name of Gammaxane is: (SSC Sub. Ins. 2015)

(a) Aniline
(b) Toluene
(c) Benzene hexachloride
(d) Chloro benzene

ANS (C)

70. The fleshy thalamus is edible in: (SSC Sub. Ins. 2015)

(a) Mango
(b) Orange
(c) Tomato
(d) Apple

ANS (D)

71. A new molecule Heat Shock Protein 90 (HSP90) was discovered in 2014 by the Didier Picard. The new discovery could help in effective treatment of ____ (SSC Sub. Ins. 2016)

(a) TB
(b) AIDS
(c) Malaria
(d) None of these

ANS (D)

72. Antigen presenting cells are specialized cells present in all of the following, except (SSC Sub. Ins. 2016)

(a) Skin
(b) Lymph node
(c) Kidney
(d) Spleen

ANS (B)

73. Which of the following determines whether a group of organisms that is from the same genus and species arise from a common source or from different sources? (SSC Sub. Ins. 2016)

(a) Biotyping
(b) DNA hybridization / DNA
(c) Serotyping
(d) Phage typing

ANS (B)

74. Starch is insoluble in water but still it is stored in large quantity in potato because (SSC Sub. Ins. 2016)

(a) soil microorganisms deposit it in the tuber.
(b) it is synthesized in potato root.
(c) it is useful for human.
(d) it is translocated in the form of sugar from leaves.

ANS (A)

75. Viruses that infect bacteria are called (SSC Sub. Ins. 2016)

(a) Basal body
(b) Basidiospores
(c) Bacteriophages
(d) Basophils

ANS (C)

76. A dispersion indicates (SSC Sub. Ins. 2016)

(a) the value of standard deviation.
(b) spread of data around central measure.
(c) the value of mean
(d) the value of mode

ANS (A)

77. The principle involved in the absorption of water by soil is (SSC Sub. Ins. 2016)

(a) Suction action
(b) Condensation
(c) Capillary action
(d) Principal of absorption

ANS (C)

78. Which of the following is present in maximum amount in acid rain? (SSC Sub. Ins. 2016)

(a) HNO3
(b) H2SO4
(c) H2CO3
(d) HCL

ANS (C)

79.The lethal dose required to kill 50% of the lab animals tested under standard is referred as (SSC Sub. Ins. 2016)

(a) MLD
(b) ID50
(c) LD50
(d) ID

ANS (C)

Study Kit For SSC Exam for Sub-Inspectors in Delhi Police & CAPFs, CISF