Contents
IDO – Prelim Question Paper – 2019
1. Find the similarity in the following common cold, ringworm, conjunctivitis, whooping cough.
(A) All of them are non-communicable diseases.
(B) All of them do not respond to curative treatment.
(C) All of them are contagious.
(D) No preventive measure is available for all of them
2. Thyroid gland is situated in our
(A) Liver
(B) Neck
(C) Arm-pits
(D) None of the above
3. Who discovered ‘Boson’ particle?
(A) Meghnad Saha
(B) Satyendra Nath Bose
(C) C. V. Raman
(D) J. C. Bose
5. Which vitamin is called ‘Riboflavin’?
(A) Vitamin B1
(B) Vitamin B2
(C) Vitamin B12
(D) Vitamin C
8. What does GSM stand for?
(A) Geographic System for Mobility
(B) Global System for Mobile Communications
(C) Great System for Mobiles
(D) Grand System for Mobility
10. One horse power is equal to
(A) 736 Watts
(B) 746 Watts
(C) 748 Watts
(D) 756 Watts
11. The electric bulb was invented by
(A) Alexander Graham Bell
(B) Michael Faraday
(C) Edison
(D) Benjamin Franklin
18. Which of the following is not an alloy of copper?
(A) Bronze
(B) Brass
(C) Solder
(D) Gun metal
21. Methylated Spirit is a mixture of
(A) Methyl alcohol and acetic acid
(B) Methyl alcohol and ethyl alcohol
(C) Ethyl alcohol and pyridine
(D) Methyl alcohol and pyridine
25. Gasoline is obtained from crude petroleum by
(A) fractional distillation
(B) fractional crystallisation
(C) sublimation
(D) evaporation
28. Mixture of Calcium Aluminate and Calcium Silicate is called
(A) Glass
(B) Cement
(C) Mortar
(D) Concrete
31. The working of the human eye is like that of a
(A) Camera
(B) Telescope
(C) Microscope
(D) Periscope
50. What did Dmitri Mendeleev formulate?
(A) Chaos theory
(B) The Periodic Table of Chemical elements
(C) The Alpha Effect
(D) Nuclear Shell Model
51. The material used in the manufacture of lead pencil is
(A) Graphite
(B) Lead
(C) Mica
(D) Carbon
53. From which part of the plant is turmeric obtained?
(A) Root
(B) Fruit
(C) Seed
(D) Stem
57. The velocity of light in vacuum and in other medium is C and V respectively, the refractive index of the medium
(A) µ = CV
(B) µ = 1/CV
(C) µ = C/V
(D) µ = V/C
58. The powerhouse of a cell is the
(A) Plastid
(B) Chloroplasts
(C) Golgi body
(D) Mitochondria
63. Gypsum is an ore of
(A) iron
(B) calcium
(C) sodium
(D) magnesium
64. Who invented the medicine of black fever/kalajor?
(A) Upendra Nath Roy
(B) Upendra Nath Brahmachari
(C) Upendra Nath Chowdhury
(D) J. C. Bose
74. If a pendulum clock is taken to moon from the earth, the clock will
(A) run slow
(B) run fast
(C) no change
(D) stop working
76. Protein-energy malnutrition causes
(A) Marasmus
(B) Rickets
(C) Beriberi
(D) Pellagra
82. Bile juice is secreted by
(A) Pancreas
(B) Liver
(C) Spleen
(D) Gall bladder
86. Who proved experimentally the existence of electromagnetic waves?
(A) J. C. Bose
(B) Maxwell
(C) Marconi
(D) Hertz
87. What is the function of lens in our eyes?
(A) Lower the eyes
(B) Send message of image to brain
(C) Change the focal distance of the eye
(D) Protect eyes from injury
89. The longest bone in the human body is
(A) Stirrup
(B) Back bone
(C) Thigh bone
(D) Gullet
91. Which of the following is non-biodegradable?
(A) Animal Bones
(B) Nylon
(C) Tea leaves
(D) Wool
92. The part of the brain which is responsible for intelligence is
(A) cerebrum
(B) cerebellum
(C) olfactory lobe
(D) cochlea
99. ‘Raman Effect’ was discovered in 1928 by
(A) J. C. Bose
(B) C. V. Raman
(C) R. J. Raman
(D) Taraknath Palit
100. The density of water is maximum at
(A) 32°F
(B) 42°F
(C) 39.2°F
(D) 4°F
IDO – Prelim Question Paper – 2007
1. Which one of the following is not a carbohydrate?
(A) Dextrose
(B) Cellulose
(C) Diastase
(D) Starch
2. Fuse wire is made up of
(A) 63% tin, 37% lead
(B) 63% lead, 37% tin
(C) 63% tin, 37% iron
(D) 63% lead, 37% iron
4. The protein of the red pigment of the blood is called
(A) Haem
(B) Globin
(C) Myoglobin
(D) Oxyglobin
5. Kala-azar is caused by
(A) Trypnosoma
(B) Leishmania
(C) Leptomonas
(D) Entamoeba
19. Which of the following may be used as a sweetener to diabetic patients?
(A) Sucrose
(B) Glucose
(C) Honey
(D) Aspartame
23. ‘Air’ is
(A) a good conductor heat
(B) poor conductor of heat
(C) neutral
(D) (A) and (C) above
24. Which one of the following acid is used as mild antiseptic?
(A) Oxalic acid
(B) Periodic acid
(C) Glacial acetic acid
(D) Boric acid
25. The radioactive element present in monazite sand available in India is
(A) Radium
(B) Uranium
(C) Polonium
(D) Thorium
26. Trypsin is secreted from
(A) Pancreas
(B) Stomach
(C) Liver
(D) Lungs
28. A planet has a diameter and average density twice that of the earth. The acceleration due to gravity on its surface will be
(A) G
(B) 2G
(C) 4G
(D) 8G
33. The white, fleshy edible part of coconut is
(A) Epicarp
(B) Mesocarp
(C) Endocarp
(D) Endosperm
36. The kinetic energy of simple harmonic motion
(A) is never zero
(B) becomes zero twice in each period
(C) is zero at equilibrium
(D) is constant
37. The Sperms are produced by
(A) Amitosis
(B) Mitosis
(C) Meiosis
(D) None of the above
38. A nucleus has a mass number 202 and atomic number 84 and it emits an alpha particle followed by a beta particle. The final nucleus formed has an atomic number
(A) 83
(B) 82
(C) 198
(D) 80
46. Which one of the following is an antioxidant?
(A) Iodine
(B) Sulphuric acid
(C) Ascorbic acid
(D) Nitric acid
51. The current in a 100 watt, 220 volts electric lamp is
(Power = Voltage × Current)
(A) 2 lamps
(B) 1.1 amps
(C) ⁵/₁₁ amps
(D) 2200 amps
71. Which one of the following is used as a dental abrasive?
(A) Sodium bicarbonate
(B) Calcium fluoride
(C) Titanium dioxide
(D) Bismuth oxide
85. Which of the following has highest nutritive value?
(A) Maize
(B) Soyabean
(C) Groundnut
(D) Arhar
95. Super conductors are those materials
(A) which become non-conductors at transition point
(B) which lose all electrical resistance when cooled below a certain temperature
(C) in which resistance rises to infinity below a certain temperature
(D) which conducts electricity at all temperature very well

