MCQ on General Science for WBCS/SSC/Misc Competetive Exams

1. With the increase of weather temperature the speed of sound :

    (a) increases       (b) decreases         (c) remains       (d) None of these

2. In which medium speed of sound would remain higher in the alternatives ?

    (a) vacuum         (b) air         (c) water        (d) None of these

3. Light of which colour has got highest velocity ?

    (a) Green         (b) red         (c) yellow        (d) blue

4. Which one is not required to produce German silver ?

    (a) copper         (b) zinc       (c) nickel       (d) tin

5. Philosopher's wool is produced through burning ?

    (a) silver        (b) Brass       (c) zinc      (d) cobalt

6. Who invented the process of breaking up the nucleus of an atom :

    (a) Mosley       (b) Dalton         (c) Rutherford        (d) None of these

7. Process of Antiseptic surgery was invented by :

    (a) Joseph Lister        (b) Robert Koch        (c) Paul Muller        (d) None

8. Radioactivity was discovered by :

    (a) Madam Marie Courie       (b) Henry Becquerel       (c) Ernest Rutherford       (d) None of these

9. Important source of Vitamin 'A' may be :

    (a) vegetables        (b) lemon        (c) meat       (d) rice

10. The source of solar energy is :

      (a) nuclear diffusion       (b) nuclear fission       (c) nuclear fusion        (d) None

11. Jet planes in the sky may be detected by Radar by using :

      (a) sound waves        (b) radio waves        (c) ultrasonic waves       (d) None

12. Food is digested in a human body mainly in the :

      (a) small intestine       (b) large intestine        (c) liver        (d) None of these

13. Chlorophyll containing unicellular plants are called ?

      (a) fungi       (b) algae       (c) weeds      (d) None of these

14. The velocity of sound per second in air at 0° Celsius temperature is around :

      (a) 300 metre       (b) 330 metre        (c) 350 metre       (d) 370 metre

15. Air bubbles are sent for deep water. At the close of surface of water the size of each bubble would become :

      (a) increased        (b) decreased        (c) of same size       (d) absent

16. Which one is not a compound ?

      (a) soap        (b) kerosene        (c) glucose        (d) petrol

17. Metal having density less than 1 is :

      (a) Graphite         (b) Sodium        (c) Aluminium        (d) None of these

18. If diamond is burnt at high heat then which would be produced

      (a) Sulfuric acid        (b) Sulphur        (c) Carbon-di-oxide        (d) None

19. When velocity of a body is made half, the kinetic energy becomes

      (a) double        (b) half        (c) one-fourth        (d) same as before

20. Which one is not an example of fossil fuel ?

      (a) coal        (b) natural gas        (c) petroleum        (d) charcoal

21. Petroleum gas is liquefied at:

      (a) High temperature and high pressure        (b) Low temperature and high pressure

      (c) High temperature and low pressure         (d) Low  temperature and low pressure

22. The main function of white blood corpuscles in a human body

      (a) carry oxygen         (b) carry nutrients        (c) combat infections        (d) None of these

23. Which one has not been correctly matched ?

      (a) Vitamin A : Retinol       (b) Vitamin E : Tecopherols

      (c) Vitamin K : Phytomenadine         (d) Vitamin B6 : Riboflavin

24. Vitamin B1 has got the chemical name of :

      (a) Thiamin       (b) Riboflavin        (c) Pyridoxine        (d) None of these

25. Circulation of blood in a human body takes assistance of :

      (a) arteries         (b) capillaries         (c) veins        (d) All of these

26. 'Urethra' in a human body is associated with :

      (a) Respiratory system       (b) Urinary system       (c) Grandular system       (d) None of these

27. Length of blood vessels in a normal adult human body is around

      (a) 1 thousand kms        (b) 10 thousand kms       (c) 50 thousand kms       (d) 1 lakh kms

28. In Blood the Red Blood Corpuscles of a human body is around

      (a) 35%        (b) 45%        (c) 55%       (d) 65%

29. Which organs of a human body provides instant energy ?

      (a) stomach        (b) liver       (c) cells      (d) pituitary gland

30. Most important organ of a human body is :

      (a) heart       (b) lungs        (c) pituitary gland       (d) liver

31. Which is produced in the stomach of a human body ?

      (a) glycogen       (b) enzyme        (c) hydrochloric acid       (d) None of these

32. In which year Human Jenome Project was launched in U.S.A

      (a) 1990        (b) 1992        (c) 1994       (c) 1996

33. Which group of plants are unicellular ?

      (a) Protista        (b) Plantae        (c) Fungi        (d) Animalia

34. First laws of planetary motion were published by :

      (a) Galileo        (b) Kepler        (c) Copernicus        (d) Newton

35. Most important element associated with the composition of the earth is :

      (a) Oxygen        (b) Magnesium         (c) Sulphur        (d) Iron

36. With which limb of a human body bone named 'Radius' is associated ?

      (a) Arm         (b) Leg        (c) Chest        (d) Neck

37. Which one of the following diseases is not caused by virus ?

      (a) measles       (b) rabies       (c) AIDS       (d) leprosy

38. Which disease is not caused by Bacteria :

      (a) tetanus         (b) pneumonia         (c) mumps        (d) diphtheria

39. The species of which group are facing extinction in largest number in this world ?

      (a) plants       (b) mammals        (c) reptiles        (d) fishes

40. Which one is not the name of a chemical weapon for genocide

      (a0 Mustard gas        (b) Sarin        (c) Hydrogen Cyanide        (d) Anthrax

41. How many pairs of ribs are there in the chest of a human body ?

      (a) 10        (b) 11        (c) 12        (d) 13

42. Longest bone in a human body is :

      (a) femur        (b) tibia         (c) radius        (d) humerous

43. Vitamin required for proper clotting of blood in a human body

      (a) Vitamin A       (b) Vitamin C      (c) Vitamin D       (d) Vitamin K

44. Which one has not been correctly matched ?

      (a) Gerontology : old age      (b) Hematology : blood       (c) Hyetology : rainfall      (d) Neurology : tissues

45. Study relating to insects is :

      (a) Entomology        (b) Mycology         (c) Cytology       (d) None of these

46. Study relating to the physical nature of heavenly bodies is :

      (a) Aeronauties        (b) Astronautics        (c) Astrophysics        (d) None of these

47. Practical unit of quantity of electricity is :

      (a) Watt        (b) Dyne       (c) Coulomb       (d) Joule

48. In which part of a human body the Adrenal glands are situated

      (a) Upper        (b) Middle        (c) Lower       (d) None of these

49. Astigmatism is a disease of the :

      (a) throat        (b) spinal cord        (c) lungs       (d) eyes

50. The lower chamber of the heart of a human body is known as

      (a) auricle        (b) ventricle         (c) caecum        (d) None of these

51. Schizophrenia disease is found to affect :

      (a) heart        (b) mind        (c) lungs       (d) None of these

52. Deuterium is also known as heavy :

      (a) Oxygen         (b) Nitrogen         (c) Hydrogen        (d) None of these

53. Graphite is an allotropic form of :

      (a) sulphur        (b) carbon        (c) zinc       (d) None of these

54. The main source of hydrogen for plants is :

      (a) air        (b) sunlight        (c) water       (d) soil

55. Lice are examples of :

      (a) Ectoparasite        (b) Endoparasite       (c) Insectivorous       (d) None

56. Aristotle is considered as the father of the subject of :

      (a) Chemistry        (b) Physics        (c) Biology       (d) None of these

57. Pure water may be obtained from sea water by the process of :

      (a) filtration        (b) distillation       (c) evaporation       (d) None of these

58. When a constant force is applied over a body then it moves with uniform :

      (a) speed        (b) velocity        (c) acceleration        (d) momentum

59. The Mediterranean climate is highly favourable for produc­tion of :

      (a) coffee         (b) rubber        (c) fruits       (d) tea

60. In which part of a human body there is the strongest muscle

      (a) Leg         (b) Neck       (c) Hand       (d) Shoulder

61. The name 'Chromosome' was coined by :

      (a) W. Flemming       (b) W. Waldeir        (c) Dupraw       (d) None of tin

62. In a human body out of total 23 pairs of Chromosome, sex chromosome remain :

      (a) 1 pair       (b) 2 pairs       (c) 3 pairs (d) Nom

63. Who authored the book 'Micrographis' and developed 'cell' concept :

      (a) Rovert Hook        (b) Leeuwenhock        (c) Vesalius        (d) None

64. One of the diseases transmitted by sex chromosome is :

      (a) Scurvy        (b) small pox        (c) colour blindness       (d) None of these

65. Dr. Hargovind Khorana got Nobel Prize for his contribution on

      (a) cells        (b) genes        (c) virus       (d) bacteria

66. Important cause of Heart attack for a person may be increased

      (a) blood protein        (b) blood sugar        (c) cholesterol       (d) blood urea

67. Heat for boiling point of mercury is around :

      (a) 280° C       (b) 320° C       (c) 360° C         (d) 440° C

68. Which help conduction of electricity :

      (a) Electron         (b) Proton          (c) Neutron        (d) None of these

69. Which one is not an example of organic acid :

      (a) citric        (b) lactic         (c) nitric        (d) acetic

70. The radius of which is highest ?

      (a) Electron         (b) proton        (c) neutron        (d) All are equal in radius

71. Atomic weight of any element is generally compared with the atomic weight of :

      (a) Oxygen        (b) Hydrogen        (c) Nitrogen        (d) None

72. What is the atomic weight of nitrogen :

      (a) 10       (b) 12       (c) 14       (d) 16

73. In a closed jar any quantity of gas remains in a system of :

      (a) concentration        (b) assimilation        (c) diffusion       (d) None of these

74. Normal piessure of gas is considered at a temperature of :

      (a) 0° Celsiusis       (b) 0° Fahrenheit        (c) 4° Celsius       (d) 100° Fahrenheit

75. Voltic Cell was invented by a scientist of :

      (a) USA        (b) Britain        (c) Germany        (d) Italy

76. A wire of same radius and length of which metal will have less resistance in the conduction of electricity ?

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

77. Depending on the radius of wire electricity conduction would increase of decrease in the relationship of :

      (a) same number        (b) square number        (c) cube number       (d) None

78. In a wire having 3 folds radius electricity conduction will be

      (a) 3 times        (b) 6 times        (c) 9 times        (d) 27 times

79. Which one is not a fundamental quantity in physics ?

      (a) length         (b) time        (c) mass       (d) force

80. Unit of astronomical distance is :

      (a) kilometer         (b) fermi        (c) nautical mile       (d) light year

81. Nuclear size is expressed in unit of:

      (a) newton        (b) angstrom         (c) fermi         (d) molecule

82. Time period of revolution of a geostationary satellite is :

       (a) 12 hours        (b) 1 day        (c) 7 days       (d) 1 year

83. A hot metal ball is to lose heat by means of :

      (a) conduction        (b) convenction        (c) radiation       (d) All of these

84. Hygrometer is used to measure :

      (a) relative density         (b) relative humidity         (c) relative purity      (d) acceleration due to gravity

85. An air bubble under water shines brightly due to :

      (a) dispersion        (b) refraction        (c) diffraction        (d) total internal reflection

86. Which has the longest wavelength ?

      (a) X-rays       (b) microwaves        (c) radio waves       (d) ultraviolet raysa

87. An air bubble in water is found to work as a :

      (a) Convex mirror         (b) convex lens      (c) concave mirror       (d) concave lens

88. During total solar eclipse which part of the sun is visible ?

      (a) chromosphere        (b) photosphere        (c) corona        (d) None of these

89. To an astronaut the outer space appears :

      (a) white       (b) crimson       (c) black      (d) blue

90. Technique of taking three dimensional images of objects is :

      (a) audiography       (b) holography        (c) lexicography       (d) None

91. Which one determines the pitch of sound ?

      (a) frequency       (b) amplitude       (c) speed       (d) wavelength

92. Most suitable metal for making electromagnet is :

      (a) steel        (b) nickel        (c) cobalt       (d) soft iron

93. Which one is a non magnetic metal :

      (a) iron       (b) nickel        (c) cobalt        (d) brass

94. A rectifier is used for :

      (a) generating electricity       (b) regulating current

      (c) converting DC into AC     (d) converting AC into DC current

95. Substance used for vulcanizing rubber is :

      (a) zinc oxide       (b) sulphur        (c) ammonium       (d) nitric acid

96. Bones of a human body are made of compounds of :

      (a) calcium and phosphorus       (b) sodium and calcium       (c) calcium und nitrogen       (d) calcium and iron

97. Poppy plant is a source of :

      (a) aspirin       (b) morphine        (c) penicillin       (d) quinine

98. Petroleum oil is an example of :

      (a) element       (b) compound       (c) mixture      (d) none of these

99. Vitamin used as an anti beriberi drug is :

      (a) Vitamin A         (b) Vitamin B        (c) Vitamin C        (d) Vitamin D

100. To convert liquid oil into solid fat the oil is :

        (a) oxidized        (b) hydrogenated        (c) methane       (d) acetylene