18/08/2024
*(100 Important MCQs)*
1. The unit of energy produced by food in the human body is called
(a) Watt
(b) DNA
*(c) Calorie (Correct)*
(d) Ampere
2. Proteins are made of
(a) Sugar
(b) Fatty acid
(c) Nucleic acid
*(d) Amino acid (Correct)*
3. Amount of water in mammalian blood is
(a) 99%
(b) 98%
*(c) 90% (Correct)*
(d) 92%
4. Which of the following Vitamin helps in clotting of blood?
(a) Vitamin B
(b) Vitamin A
(c) Vitamin D
*(d) Vitamin K (Correct)*
5. Which of the following vitamins are fat soluble?
(a) Vitamins A,B, C, D
*(b) Vitamins A, D, E, K (Correct)*
(c) Vitamins A, B, C, D
(d) None of these
6. Which of the following is not a source of Vitamin C?
(a) Potato
(b) Tomato
(c) Guava
*(d) Milk (Correct)*
7. Ozone is present in which of the following layers of atmosphere
(a) Troposphere and Thermosphere
*(b) Troposphere and Stratosphere (Correct)*
(c) Mesosphere
(d) Thermosphere
8. The study of relationship between organism and their environment is called
*(a) Ecology (Correct)*
(b) Oncology
(c) Lithology
(d) None of these
9. Most of the ozone in the atmosphere is concentrated in the
(a) Mesosphere
(b) Troposphere
*(c) Stratosphere (Correct)*
(d) Ionosphere
10. The most abundant element in Earth’s crust is
(a) Silicon
*(b) Oxygen (Correct)*
(c) Aluminum
(d) None of these
11. Which of the following vitamins is Water soluble?
(a) Vitamins B, E
(b) Vitamins A, B
(c) Vitamins C, D
*(d) Vitamins B, C (Correct)*
12. In railway tracks, a small gap is left between the rails
*(a) To allow for the expansion during heat (Correct)*
(b) To save the cost of metal
(c) To permit the shrinkage of metal
13. Friction can be reduced by changing over from
*(a) Sliding to rolling (Correct)*
(b) Rolling to sliding
(c) Potential energy to kinetic energy
14. A solid ball of metal has a spherical cavity inside it. If the ball is heated, the volume of the cavity will
(a) Increase
*(b) Decrease (Correct)*
(c) Remain unaffected
15. As we climb up the mountain, the atmospheric pressure will
*(a) Decrease (Correct)*
(b) Increase
(c) Remain the same
(d) None of these
16. Which of the following vitamin is produced in the body with the help of sunlight?
*(a) Vitamin D (Correct)*
(b) Vitamin E
(c) Vitamin K
(d) None of these
17. Vitamin ‘D’ prevents
(a) Tooth diseases
*(b) Bone diseases (Correct)*
(c) Eye diseases
(d) Skin diseases
18. Heart attack is caused due to
(a) Blood sugar
*(b) Cholesterol (Correct)*
(c) Blood protein
(d) Blood urea
19. Which of the following diseases has posed a serious threat the world over?
(a) Tumour
(b) Paralytic stroke
*(c) AIDS (Correct)*
(d) Tuberculosis
20. Which of the following disease is not water-borne?
(a) Cholera
*(b) Influenza (Correct)*
(c) Amoebiasis
(d) Typhoid
21. Typhoid and cholera are typical examples of
(a) Infection diseases
(b) Air-borne diseases
*(c) Water-borne diseases (Correct)*
(d) None of these
22. Who invented the hydrogen bomb?
(a) J. Robert Oppenheimer
(b) Albert Einstein
*(c) Samuel Cohen (Correct)*
(d) Edward Teller
23. Logarithm tables were invented by
*(a) John Napier (Correct)*
(b) John Doe
(c) John Harrison
(d) John Douglas
24. Who invented optical fibre?
(a) Samuel Cohen
*(b) Narinder Kapany (Correct)*
(c) Percy L. Spencer
(d) T. H. Maimah
25. Brass is an alloy of
(a) Copper and Tin
*(b) Copper and Zinc (Correct)*
(c) Copper and Nickel
(d) None of these
26. A transformer is used to
(a) Increase DC voltage
*(b) Increase or decrease AC voltage (Correct)*
(c) Decrease DC voltage
(d) None of these
27. Which of the following gases is used for purification of water?
(a) Oxygen
(b) Ammonia
*(c) Chlorine (Correct)*
(d) Neon
28. Pure gold is
(a) 17 carats
(b) 20 carats
*(c) 24 carats (Correct)*
(d) 36 carats
29. Which of the following is a gas?
(a) Thorium
(b) Plutonium
(c) Mercury
*(d) Chlorine (Correct)*
30. Which one of the following mixture of gases is required in gas welding?
(a) Oxygen and ethylene
(b) Oxygen and hydrogen
*(c) Acetylene and oxygen (Correct)*
(d) All of above
31. One horse power is equal to
(a) 736 watts
*(b) 746 watts (Correct)*
(c) 748 watts
(d) 796 watts
32. Heat from the sun is received by the earth through
(a) Conduction
(b) Convection
*(c) Radiation (Correct)*
(d) Condensation
33. As the temperature of ice rises, the ice melts and its density
(a) Decreases
(b) Constant
*(c) Increases (Correct)*
(d) All of above
34. A branch of science dealing with the study of fossils is called
(a) Parasitology
*(b) Palaeontology (Correct)*
(c) Theology
(d) Radiology
35. The theory of inheritance of acquired characters was propounded by
(a) Charles Darwin
*(b) Gregor Mendal (Correct)*
(c) J.B. Lamarck
(d) Weismann
36. Which of the following was discovered by Ronald Ross?
(a) Cholera germs
*(b) Malaria parasite (Correct)*
(c) Jaundice germs
(d) None of these
37. Radioactivity was discovered by
*(a) Henry Bequerel (Correct)*
(b) Marie Curie
(c) Newton
(d) Einstein
38. The science of heavenly bodies is called
(a) Astrophysics
*(b) Astronomy (Correct)*
(c) Astroneuties
(d) Cosmology
39. Which of the following has no blood, but respires?
(a) Cockroach
(b) Earthworm
(c) Fish
*(d) Hydra (Correct)*
40. Which of the following is the basic characteristic of a living organism?
(a) Ability to move
*(b) Ability to reproduce (Correct)*
(c) Ability to eat
(d) Ability to breath
41. In which organ of the human body are the lymphocyte cells formed?
(a) Liver
(b) Long bone
(c) Pancreas
*(d) Spleen (Correct)*
42. What is stored in the gall bladder?
(a) Enzymes
*(b) Bile (Correct)*
(c) Urea
(d) Insulin
43. The study of structures and formation of rocks and minerals on other plants is called
(a) Cosmology
(b) Virology
*(c) Astrogeology (Correct)*
(d) Histology
44. Which vitamin canot store in human body?
(a) Vitamin A
*(b) Vitamin C (Correct)*
(c) Vitamin D
(d) Vitamin E
45. Deficiency of vitamin C causes
(a) Night-blindness
(b) Beri-Beri
*(c) Scurvy (Correct)*
(d) None of these
46. Which Vitamin is known as Ascorbic Acid?
(a) Vitamin A
(b) Vitamin B
(c) Vitamin K
*(d) Vitamin C (Correct)*
47. Deficiency of Vitamin C causes
*(a) Tooth diseases (Correct)*
(b) Bone diseases
(c) Eye diseases
(d) Skin diseases
48. All forms of energy that we use are ultimately transformed into
(a) Electrical energy
*(b) Heat energy (Correct)*
(c) Light energy
(d) Chemical energy
49. Water helps in the metabolism process in the presence of
(a) Amino acids
(b) Ribonucleic Acid
(c) Proteins
*(d) Enzymes (Correct)*
50. The proteins are made in the cells under the instructions of
*(a) Genes (Correct)*
(b) DNA
(c) RNA
(d) Ribosome
51. Which is an essential constituent of diet?
*(a) Starch (Correct)*
(b) Glucose
(c) Amino acid
(d) None of these
52. Deficiency of iron in human diet causes:
(a) Goitre
(b) Scurvy
*(c) Anaemia (Correct)*
(d) Rickets
53. Which of the following acids secreted internally, helps in digestion?
(a) Formalin
(b) Citric
*(c) Hydrochloric (Correct)*
(d) Acetic
54. After drinking contaminated water, you would be most apt to develop symptoms of
(a) Malaria
*(b)Typhoid fever (Correct)*
(c) Yellow fever
(d) Formalin
55. Recording of brain waves from outer surface of head is called
(a) E.C.G.
(b) MRI
(c) C.T. scans
*(d) E.E.G (Correct)*
56. Which one of the following is an example of hereditary disease?
(a) AIDS
*(b) Hemophilia (Correct)*
(c) Syphilis
(d) Formalin
57. Hair, finger nails, hoofs etc. are all made of?
(a) Fat
(b) Vitamins
*(c) Proteins (Correct)*
(d) Iron
58. What type of infection is tuberculosis?
(a) Viral
*(b) Bacterial (Correct)*
(c) Fungal
(d) Parasitic
59. AIDS virus destroys the ________ system of the human body.
(a) Circulation
*(b) Immune (Correct)*
(c) Digestion
(d) Brain
60. Which sets of colour combinations is added in colour vision in TV?
*(a) Red, green and blue (Correct)*
(b) Orange, black and violet
(c) White, red and yellow
61. Water cannot be used to extinguish fire caused by an electric current because
*(a) It may cause another short circuit (Correct)*
(b) It may cause hydrolysis
(c) It may cause electrocution
62. Cloudy nights are warmer because
*(a) Clouds prevent radiation of heat from ground to air (Correct)*
(b) Of low atmospheric pressure
(c) Of the compact density of air
63. Food is cooked quickly in a pressure cooker because
(a) Boiling point of water is decreased
*(b) Boiling point of water is increased (Correct)*
(c) It absorbs heat quickly
64. The AIDS virus is called.
(a) A.I.B
(b) B.I.H
*(c) H.I.V (Correct)*
(d) V.I.H
65. Cataract is a disease which is due to
(a) A defect in the optic nerve
(b) Inflammation in the eye
*(c) Opacity of cornea (Correct)*
(d) Opacity of lens
66. In which form glucose is stored in the liver?
(a) Lactic acid
(b) Lactose
(c) Ribose
*(d) Glycogen (Correct)*
67. Mercury thermometer was invented by
*(a) Galileo (Correct)*
(b) Fahrenheit
(c) Newton
(d) Priestly
68. John Walker invented
*(a) Safety match (Correct)*
(b) Safety razor
(c) Safety pin
(d) Safety valve
69. Gun powder was invented by
*(a) Roger Bacon (Correct)*
(b) Alfred Nobel
(c) Albert Einstein
(d) Alexander Fleming
70. Who among the following does not have a chemical element named after him?
(a) Albert Einstein
(b) Enrico Fermi
*(c) Isaac Newton (Correct)*
(d) Mendeleev
71. In which country alcohol is used as fuel for vehicles
(a) U.S.A
*(b) Brazil (Correct)*
(c) Japan
(d) Germany
72. The device used for the measurement of current, voltage and resistance is
*(a) AVO meter (Correct)*
(b) Galvanometer
(c) Ammeter
(d) Ohmmeter
73. Silicon is a
*(a) Semi-conductor (Correct)*
(b) Insulator
(c) Superconductor
(d) Conductor
74. What is Penicillin?
(a) Vitamin
(b) Hormone
*(c) Antibiotic (Correct)*
(d) A**l
75. Liver produces?
(a) Hormones
*(b) Bile (Correct)*
(c) Enzymes
(d) HCl
76. Lack of ________ causes diabetes
(a) Sugar
*(b) Insulin (Correct)*
(c) Calcium
(d) Vitamins
77. Triple antigen vaccine is given to children to protect them against
(a) Polio
*(b) Whooping cough (Correct)*
(c) Tuberculosis
(d) Contagious diseases
78. Storage batteries commonly contain
(a) Copper
(b) Mercury
*(c) Lead (Correct)*
(d) Iron
79. Water is a universal solvent for what reactions.
(a) Physical
(b) Chemical
(c) Nuclear
*(d) Biochemical (Correct)*
80. The volume percentage of nitrogen in air is
(a) 60%
(b) 67%
(c) 74%
*(d) 78% (Correct)*
81. Air contains volume of carbon dioxide approximately;
(a) 3 %
(b) 33%
(c) 0.3 %
*(d) 0.03% (Correct)*
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82. The gases which are used by divers as an artificial atmosphere are helium and;
(a) Nitrogen
*(b) Oxygen (Correct)*
(c) Neon
(d) None of these
83. Which of the following is involved in blood clotting?
(a) Sodium
(b) Magnesium
*(c) Calcium (Correct)*
(d) Potassium
84. Which of the following vitamins is essential for bone and teeth formation?
(a) Vitamin A
(b) Vitamin B
(c) Vitamin C
*(d) Vitamin D (Correct)*
85. The richest source of vitamin D is:
*(a) Cod liver oil (Correct)*
(b) Spinach
(c) Milk
(d) Cheese
86. Which of the following vitamins is synthesized in the body by intestinal bacteria?
(a) Vitamin B1
(b) Vitamin B4
(c) Vitamin D
*(d) Vitamin K (Correct)*
87. The vitamin capable of formation of blood is
(a) Vitamin A
*(b) Vitamin B (Correct)*
(c) Vitamin C
(d) Vitamin D
88. Entomology is the science which deals with
(a) Plants
(b) Animals
*(c) Insects (Correct)*
(d) Chemicals
89. Which of the following is a mammal?
(a) Ostrich
(b) Crocodile
*(c) Platypus (Correct)*
(d) Duck
90. Respiratory centre is situated in:
(a) Cerebrum
(b) Cerebellum
*(c) Medulla oblongata (Correct)*
(d) Diencephalon
91. The normal temperature of the human body is:
(a) 90F
(b) 98F
*(c) 98.6F (Correct)*
(d) 96.4F
92. The total number of bones in human skull
(a) 28
(b) 42
*(c) 22 (Correct)*
(d) 37
93. In brain, the site for intelligence, memory and emotion is present in
*(a) Cerebrum (Correct)*
(b) Cerebellum
(c) Medulta
(d) Hypothalamus
94. The longest and the strongest bone in the human body is
(a) Tibia
(b) Pelvis
*(c) Femur (Correct)*
(d) Jaw
95. By taking pulse rate of the human body a doctor determines
(a) Condition of the liver
(b) Amount of blood in the body
(c) Checks the lungs
*(d) Heart beat (Correct)*
96. Hepatitis B is a disease of
(a) Lungs
(b) Heart
*(c) Liver (Correct)*
(d) Kidney
97. Who discovered circulation of blood in the human body?
(a) Edward Jenner
(b) Joseph Lister
*(c) William Harvey (Correct)*
(d) Jonon Esals
98. Who was the surgeon who pioneered antiseptic surgery?
(a) Edward Jenner
*(b) Joseph Lister (Correct)*
(c) Henry William
(d) John Gleeman
99. The credit of inventing the television goes to
(a) Faraday
*(b) Baird (Correct)*
(c) Edison
(d) Marconi
100. Alfred Nobel is associated with the invention of
(a) Cosmic rays
100*(b) Dynamite (Correct)*
(c) Dynamo
(d) penicillin
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