top 150 general science questions,
General Science questions for SSC, CGL,UPSC,NDA,CDS,PCS
GK questionaries in english,
1. A concave lens always forms an image which is.....
(a) real and erect
(b) virtual and erect
(c) real and inverted
(d) virtual and inverted
ANS (B)
2. A vitamin requires cobalt for its activity. The vitamin is ......
(a) Vitamin B12
(b) Vitamin D
(c) Vitamin B2
(d) Vitamin A
ANS (A)
3. One of the constituents of tear gas is
(a) Ethane
(b) Ethanol
(c) Ether
(d) Chloropicrin
ANS (D)
4. The modulus of rigidity is the ration of ..........
(a) longitudinal stress to longitudinal strain
(b) Volume stress to volume strain
(c) shearing stress to shearing strain
(d) tensile stress to tensile strain
ANS (B)
5. The propagation of sound waves in a gas involves ........
(a) adiabatic compression and refraction
(b) isothermal compression and rarefaction
(c) isochoric compression and rarefaction
(d) isobaric compression and rarefaction
ANS (A)
6. An stomic clock is based on transitions in ........
(a) Sodium
(b) Caesium
(c) Magnesium
(d) Aluminium
ANS (B)
7. Plasma membrane in eukaryotic celle is made up of ......
(a) Phospholipid
(b) Lipoprotein
(c) Phospholpo-protein
(d) Phospho-protein
ANS (A)
8. Which one of the following is also called the 'power plants' of the cell ?
(a) Golgi body
(b) Mitochondrion
(c) Ribosome
(d) Lysosome
ANS (B)
9. What is the chemical name of vinegar ?
(a) Citric acid
(b) Acetic acid
(c) Pyruvic acid
(d) Malic acid
ANS (B)
10. Which of the following is not a property of heavy water ?
(a) Boiling point of heavy water is lower than that of, ordinary water
(b) Density of heavy water is higher than that of ordinary water
(c) Freezing point of heavy water is higher than that of ordinary water
(d) It produces corrosion
ANS (A)
11. In which of the following processes is energy released ?
(a) Respiration
(b) Photosynthesis
(c) Ingestion
(d) Absorption
ANS (A)
12. Animals living in the three trunks are known as .......
(a) Arboreal
(b) Volant
(c) Amphibious
(d) Aquatic
ANS (A)
13. In input frequency of a full wave rectifier be n, then output frequency would be ......
(a)n2
(b) n
(c)3n2
(d) 2n
ANS (A)
14. Heat transfer horizontally within the atmosphere is called .......
(a) Conduction
(b) Convection
(c) Absorption
(d) Advection
ANS (D)
15. Noise is measured in ......
(a) Watt
(b) REM
(c) Centigrade
(d) Decibel
ANS (D)
16. The bats can fly in the dark because ......
(a) they can see the objects in darkness
(b) they have weak legs and are likely to be attacked by predators
(c) they generate flashes of light
(d) they generate ultrasonic sound waves
ANS (D)
17. What changes will happen to a bow of ice and water kept at exactly zero degree Celsius?
(a) All ice will melt
(b) All water will become ice
(c) No change will happen
(d) Only some ice will melt.
ANS (C)
18. The art and science of map making is called .......
(a) Remote Sensing
(b) Cartography
(c) Photogrammetry
(d) Mapping
ANS (B)
19. Silver halides are used in photographic plates because they are .......
(a) oxidised in air
(b) soluble in hyposolution
(c) reduced by light
(d) totally colourless
ANS (C)
20. Tetra ethyle lead (TEL) is.......
(a) a catalyst in burning fossil fuel
(b) an antioxidant
(c) a reductant
(d) an antiknock compound
ANS (D)
21. Curie point is the temperature at which ........
(a) Matter becomes radioactive
(b) A metal loses magnetic properties
(c) A metal loses conductivity
(d) Transmutation of metal occurs.
ANS (B)
22. The isotope used for the production of atomic energy is .......
(a) U-235
(b) U-238
(c) U-234
(d) U-236
ANS (A)
23. The acceleration due to gravity at the equator ......
(a) is less than that at the poles
(b) is greater than that at the poles
(c) is equal to that at the poles
(d) does not depend on the earth's centripetal acceleration
ANS (A)
24. Which of the following is not a nucleon ?
(a) Proton
(b) Neutron
(c) Electron
(d) Positron
ANS (D)
25. The material used in the manufacture of lead pencil is .......
(a) Graphite
(b) Lead
(c) Carbon
(d) Mica
ANS (A)
26. Angle of friction and angle of repose are ......
(a) equal to each other
(b) not equal to each other
(c) proportional to each other
(d) None of the above
ANS (A)
27. What happens to a person who receives the wrong type of blood? ........
(a) All the arteries constrict
(b) All the arteries dialates
(c) The RBCs agglutinate
(d) The spleen and lymphnodes deteriorate
ANS (C)
28. If all bullets could not be removed from gun shot injury of a man, it may cause poisoning by ......
(a) Mercury
(b) Lead
(c) Iron
(d) Arsenic
ANS (D)
29. Ringworm is a ................ disease.
(a) Bacterial
(b) Protozoan
(c) Viral
(d) Fungal
ANS (D)
30. Pituitary gland is situated in .....
(a) the base of the heart
(b) the base of the brain
(c) the neck
(d) the abdomen
ANS (B)
31. Saliva helps in the digestion of: ......
(a) Fats
(b) Starch
(c) Proteins
(d) Vitamins
ANS (B)
top 150 general science questions,
General Science questions for SSC, CGL,UPSC,NDA,CDS,PCS
GK questionaries in english,
32. The longest bone in the human body is: .....
(a) Ulna
(b) Humerus
(c) Femur
(d) Tibia
ANS (C)
33. The time period of a pendulum when taken to the Moon would: .....
(a) remain the same
(b) decrease
(c) become zero
(d) increase
ANS (D)
34. The function of ball hearings in a wheel is: .....
(a) to increase friction
(b) to convert kinetic friction into rolling friction
(c) to convert static friction into kinetic friction
(d) just for convenience
ANS (B)
35. 'Shock–absorbers' are usually made of steel as it:......
(a) is not brittle
(b) has lower elasticity
(c) has higher elasticity
(d) has no ductile property
ANS (C)
36. Which of the following could be used as fuel in propellant or rockets?
(a) Liquid Hydrogen + Liquid Nitrogen
(b) Liquid Oxygen + Liquid Argon
(c) Liquid Nitrogen + Liquid Oxygen
(d) Liquid Hydrogen + Liquid Oxygen
ANS (D)
37. The addition of gypsum to portland cement helps in: ......
(a) increasing the strength of cement
(b) rapid setting of cement
(c) preventing rapid setting of cement
(d) reduction in the cost of cement
ANS (C)
38. White lung disease is prevalent among the workers of:.......
(a) Paper industry
(b) Cement industry
(c) Cotton industry
(d) Pesticide industry
ANS (D)
39. lodoform is used as an: ......
(a) antipyretic
(b) analgesic
(c) antiseptic
(d) anesthetic
ANS (C)
40. An artificial ecosystem is represented by: ......
(a) pisciculture tank
(b) agricultural land
(c) zoo
(d) aquarium
ANS (D)
41. The constituents of automobile exhaust that can cause cancer is are: .....
(a) Oxides of nitrogen
(b) Carbon monoxide
(c) Polycyclic hydrocarbons
(d) Lead
ANS (D)
42. The optimum dissolved oxygen level (in mg/litre) required for survival of aquatic organisms is: ..
(a) 4 – 6
(b) 2 – 4
(c) 8 – 10
(d) 12 – 16
ANS (A)
43. The world's only floating national park is situated in: .....
(a) Manipur
(b) Kuala Lumpur
(c) Bilaspur
(d) Dispur
ANS (A)
44. Who invented vaccination for 'Small Pox'?
(a) Sir Fredrick Grant Banting
(b) Sir Alexander Fleming
(c) Edward Jenner
(d) Louis Pasteur
ANS (C)
45. BT seed is associated with.......
(a) Rice
(b) Wheat
(c) Cotton
(d) Oil seeds
ANS (C)
46. Which one of the following minerals is found in Monazite sand?
(a) Potassium
(b) Uranium
(c) Thorium
(d) Sodium
ANS (C)
47. In coriander, the useful parts are .......
(a) roots & leaves
(b) leaves & flowers
(c) leaves & dried fruits
(d) flowers & dried fruits
ANS (C)
48. Which plant is called Herbal Indian Doctor?
(a) Amla
(b) Mango
(c) Neem
(d) Tulsi
ANS (A)
49. The pH of human blood is .......
(a) 7.2
(b) 7.8
(c) 6.6
(d) 7.4
ANS (D)
50. Which amongst the following is largest endocrine gland in the body?
(a) Thyroid
(b) Parathyroid
(c) Adrenal
(d) Pituitary
ANS (A)
QUESTIONS : GENERAL SCIENCE
51. Which amongst the following is the largest mammal?
(a) Elephant
(b) Whale
(c) Dinosaur
(d) Rhinoceros
ANS (B)
52. Which part becomes modified as the tusk of elephant?
(a) Canine
(b) Premolar
(c) Second incisor
(d) Molar
ANS (C)
53. Optical fibres are based on the phenomenon of......
(a) Interference
(b) Dispersion
(c) Diffraction
(d) Total Internal Reflection
ANS (D)
54. Now–a–days yellow lamps are frequently used as street lights. Which of the following gases is used in these lamps?
(a) Sodium
(b) Neon
(c) Hydrogen
(d) Nitrogen
ANS (A)
55. 'Mirage' is an example of (SSC CGL 2011)
(a) refraction of light only
(b) total internal reflection of light only
(c) refraction and total internal reflection of light
(d) dispersion of light only
ANS (C)
56. The phenomenon of light associated with the apprearance of blue colour of the sky is .....
(a) Interference
(b) Reflection
(c) Refraction
(d) Scattering
ANS (D)
57. Lens is made up of ....
(a) Pyrex glass
(b) Flint glass
(c) Ordinary glass
(d) Cobalt glass
ANS (B)
58. The element which is used for vulcanizing rubber.....
(a) Sulphur
(b) Bromine
(c) Silicon
(d) Phosphorus
ANS (A)
59. Which of the following is responsible for the extra strength of pyrex glass?
(a) Potassium Carbonate
(b) Lead Oxide
(c) Borax
(d) Ferric Oxide
ANS (C)
60. The noble gas used for the treatment of cancer is ....
(a) Helium
(b) Argon
(c) Krypton
(d) Radon
ANS (D)
61. Fertilization occurs normally in the.....
(a) Cervix
(b) Vagina
(c) Fallopian tube
(d) Uterus
ANS (C)
62. People consuming alcohol in heavy quantities generally die of .....
(a) liver or stomach cancer
(b) weakening of heart muscles leading to cardiac arrest
(c) blood cancer
(d) Cirrhosis
ANS (D)
63. The organisms at the base of the grazing food-chain are .....
(a) Carnivores
(b) Decomposers
(c) Producers
(d) Herbivores
ANS (C)
top 150 general science questions,
General Science questions for SSC, CGL,UPSC,NDA,CDS,PCS
GK questionaries in english,
64. The mass of 10 moles of water is.....
(a) 90 g
(b) 45 g
(c) 18 g
(d) 180 g
ANS (C)
65. Vitamin A is rich in ....
(a) Carrot
(b) Lime
(c) Beans
(d) Rice
ANS (A)
66. The high boiling point of water compared to hydrogen sulphide or hydrogen chloride is due to....
(a) Dipole insulation
(b) Van der Waal's attraction
(c) Polar covalent bonding
(d) Hydrogen bonding
ANS (D)
67. Which of the following determines the chemical properties of an element?
(a) Number of electrons
(b) Number of neutrons
(c) Number of protons
(d) All of the above
ANS (A)
68. 'Lumen' is the unit of .....
(a) Illuminance
(b) Brightness
(c) Luminous flux
(d) Luminous intensity
ANS (C)
69. Which one of the following forces is a 'dissipative force'?
(a) Electrostatic force
(b) Magnetic force
(c) Gravitational force
(d) Frictional force
ANS (D)
70. If a resistive wire is elongated, its resistance .....
(a) decreases
(b) remains constant
(c) increases
(d) All of the above
ANS (C)
71. If a magnet has a third pole, then the third pole is called .....
(a) defective pole
(b) consequent pole
(c) extra pole
(d) arbirary pole
ANS (B)
72. The sweet taste of fruits is due to ......
(a) Lactose
(b) Fructose
(c) Maltose
(d) Ribose
ANS (B)
73. Which is NOT a correct statement?
(a) Phenols are acidic
(b) In benzene all the atoms lie in one plane
(c) Methylated spirit contains only methanol
(d) Dilute solutions contain less amount of solute
ANS (C)
74. The infective stage of Malaria is: ....
(a) Gametocyte
(b) Ring stage
(c) Sporozoite
(d) Merozoite
ANS (C)
75. Which of the following is meant for the ex-situ conservation of various species?
(a) Sperm bank
(b) Blood bank
(c) Germplasm bank
(d) Herbarium
ANS (C)
76. An algae type ocean deposit is: ....
(a) Neritic remains
(b) Diatom Ooze
(c) Pteropod Ooze
(d) Pelagic deposits
ANS (B)
77. Photosynthetic vesicle found in bacteria is called a:.....
(a) Mesosome
(b) Chromatophore
(c) Genophore
(d) Pneumatophore
ANS (B)
78. What type of mirror is used in a view finding mirror of a vehicle?
(a) Convex mirror
(b) Plane mirror
(c) Concave mirror
(d) Paraboloidal mirror
ANS (A)
79. Pyroligneous acid obtained from wood contains: ....
(a) 10% Formaldehyde
(b) 10% Acetic acid
(c) 10% Formic acid
(d) 10% ethanol
ANS (B)
80. Union Carbide India Ltd. manufactured essentially:....
(a) Heavy water
(b) Petrochemicals
(c) Fertilizers
(d) Leather goods
ANS (B)
81. Drying oils contain a fairly large proportion of: ....
(a) Unsaturaled fatty acids
(b) Fats
(c) Proteins
(d) Saturated fatty acids
ANS (A)
82. The red, orange and yellow colours of leaves are due to:.....
(a) Carotenoids
(b) Aldehydes
(c) Tannins
(d) Lignins
ANS (A)
83. We receive sunlight on earth surface. What type of light beams are these?
(a) Random
(b) Parallel
(c) Converging
(d) Diverging
ANS (A)
84. Polar-bears hold cures for: .....
(a) Type II diabetes
(b) Osteoporosis
(c) Breast-cancer
(d) Kidney failure
ANS (A)
85. Which colour/colours of light has the highest velocity through vacuum? ....
(a) Blue
(b) Red
(c) Green
(d) All of the above
ANS (D)
86. The ultimate source of energy in a hydroelectric power station is: .....
(a) solar energy
(b) the potential energy of water
(c) the kinetic energy of water
(d) the electro-chemical energy of water
ANS (B)
87. The disease that kills more people than lung cancer as a consequence of air pollution is: ....
(a) chronic bronchitis
(b) asthma
(c) emphesema
(d) heart attack
ANS (C)
88. Which of the following pairs is correctly matched? ....
(a) Milk of lime–sodium sulphate
(b) Glauber’s salt–calcium sulphate
(c) Salt petre–potassium nitrate
(d) Gypsum–calcium hydroxide
ANS (C)
top 150 general science questions,
General Science questions for SSC, CGL,UPSC,NDA,CDS,PCS
GK questionaries in english,
89. ‘Eutrophication’ is associated with .....
(a) Nitrates and Phosphates
(b) Sewage
(c) Silt load
(d) Vegetation
ANS (A)
90. The best way to maintain a natural equilibrium between the pest and predator is by using .....
(a) insecticides
(b) biological control
(c) pesticides
(d) herbicides
ANS (B)
91. ‘Dry ice’ is the condensed form of .....
(a) sulphur tri-oxide
(b) carbon dioxide
(c) highly cooled water
(d) oxygen
ANS (B)
92. The materials which are strongly attracted by magnet are called .....
(a) ferro-magnetic substances
(b) universal substances
(c) para-magnetic substances
(d) dia-magnetic substances
ANS (A)
93. In a pin-hole camera, we usually get ......
(a) erect impression
(b) inverted impression
(c) erect image
(d) inverted image
ANS (B)
94. What happens to the kinetic energy of gas molecules with rise of temperature ?
(a) Remains same
(b) Fluctuates
(c) Increases
(d) Decreases
ANS (C)
95. The sex of a child is determined ....
(a) six to seven weeks after conception
(b) in the third month of pregnancy
(c) at the time of sperm’s entry
(d) at the time of fertilisation of ovum
ANS (D)
96. The food chain of the ecosystem is maintained by the activities of .....
(a) Decomposers
(b) Predators
(c) Producers
(d) Consumers
ANS (A)
97. Which one of these primates is closest to the modern man?
(a) Orang-utan
(b) Chimpanzee
(c) Gorilla
(d) Gibbon
ANS (B)
98. A gram of fertile agricultural soil may contain bacteria upto .....
(a) five million
(b) one billion and above
(c) fifty thousand
(d) five hundred thousand
ANS (B)
99. A reduction reaction involves .....
(a) addition of oxygen
(b) addition of nitrogen
(c) addition of hydrogen
(d) None of the above
ANS (C)
100. An antiknock for petrol is .....
(a) Sodium hydroxide
(b) Ethanol
(c) Sodium benzoate
(d) Lead tetraethyl
ANS (D)
QUESTIONS : GENERAL SCIENCE
101. Which one of the following pairs is not correctly matched ?
(a) Vitamin C - Scurvy
(b) Vitamin K - Clotting of blood
(c) Vitamin A - Night blindness
(d) Vitamin E - Rickets
ANS (D)
102. The fibre that will yield ammonia when destructively distilled is ....
(a) Wool
(b) Cellulose acetate
(c) Cotton
(d) Silk
ANS (A)
103. During respiration, energy is derived from ....
(a) ATP
(b) Chlorophyll
(c) RNA
(d) DNA
ANS (A)
104. When was a global network of daily temperature records created ?
(a) Around 1890
(b) Around 1920
(c) Around 1800
(d) Around 1850
ANS (B)
105. Sex hormones are ...
(a) Vitamins
(b) Alkanes
(c) Carbohydrates
(d) Steroids
ANS (D)
106. A form of condensation that reduces visibility and causes breathing problems is ....
(a) Dew
(b) Frost
(c) Smog
(d) Mist
ANS (C)
107. Green glands are associated with ....
(a) Reproduction
(b) Excretion
(c) Respiration
(d) Digestion
ANS (B)
108. During respiration, the gases enter into the blood and leave the same by the process of ....
(a) Active transport
(b) Diffusion
(c) Diffusion and active transport
(d) Osmosis
ANS (B)
109. Heart is devoid of ....
(a) Cardiac muscle
(b) Involuntary muscle
(c) Voluntary muscle
(d) Smooth muscle
ANS (C)
110. The soil salinity is measured by....
(a) Conductivity meter
(b) Hygrometer
(c) Psychrometer
(d) Auxanometer
ANS (B)
111. Which of the following is a fungal disease?
(a) Leucoderma
(b) Eczema
(c) Ringworm
(d) Elephantiasis
ANS (C)
112. Chickenpox is caused by ....
(a) DNA virus
(b) Variola virus
(c) Streptococcus
(d) Vibrio cholerae
ANS (A)
113. Instruments can be shielded from outside magnetic effects by surrounding them with ....
(a) Iron shield
(b) Rubber shield
(c) Brass shield
(d) Glass shield
ANS (C)
114. Find the odd one.
(a) Marble
(b) Chalk
(c) Limestone
(d) Slaked lime
ANS (D)
115. The following is a pseudo-force: .....
(a) Centrepetal force
(b) Centrifugal reaction force
(c) Centrifugal force
(d) Strong nuclear force
ANS (C)
116. The hydraulic brake used in automobiles is a direct application of .....
(a) Archimedes’ principle
(b) Torricellean law
(c) Bernoulli’s Theorem
(d) Pascal’s law
ANS (D)
117. Amides can be converted to amines by the reaction named .....
(a) Perkin
(b) Claisen
(c) Hoffman
(d) Clemmesen
ANS (C)
118. The base used as an antacid is .....
(a) Calcium hydroxide
(b) Barium hydroxide
(c) Magnesium hydroxide
(d) Silver hydroxide
ANS (C)
119. A process which is not helpful in the prevention of rusting of iron is .....
(a) annealing
(b) applying grease
(c) galvanising
(d) painting
ANS (A)
120. Denatured alcohol .....
(a) is a form of alcohol
(b) is unfit for drinking as it contains poisonous substances
(c) contains coloured impurities
(d) is sweet to taste
ANS (B)
121. Phenolics as pollutants can be removed from waste water by use of .....
(a) Ion exchange resin technique
(b) Electrolyte decomposition technique
(c) Reverse osmosis method
(d) Polymeric adsorbents
ANS (D)
122. The stability of a pond ecosystem depends on ....
(a) micro-organisms and fishes
(b) micro-organisms and zoo planktons
(c) fishes and reptiles
(d) producers and consumers
ANS (D)
123. Supersonic air planes create a shock wave called .....
(a) Transition wave
(b) Ultrasound
(c) Transverse wave
(d) Sonic boom
ANS (D)
124. The danger signals are red while the eye is more sensitive to yellow because .....
(a) absorption in red is less than yellow and hence red is visible from a distance
(b) scattering in yellow light is less than red
(c) the wavelength of red light is more than yellow light
(d) none of the above reasons
ANS (C)
125. Transboundary pollution (or) Acid rain is caused by :....
(a) Nitrogen oxide and sulphur dioxide
(b) Carbon monoxide
(c) Carbon dioxide
(d) Hydrocarbon
ANS (A)
126. Which of the following is an endemic species? ......
(a) Nicobar pigeon
(b) Horn bill
(c) Indian Rhino
(d) Pink head duck
ANS (A)
127. The natural disaster in which carbon-di-oxide suddenly erupts from a deep lake water is known as __________
(a) Liminic
(b) Lacaustrine
(c) Fluvial
(d) Glacial
ANS (A)
128. Blood group was discovered by :
(a) Alexander Fleming
(b) William Harvey
(c) Landsteiner
(d) Pavlov
ANS (C)
129. Pick out the correct match : .....
(a) Egg yolk Protein and Fat
(b) Fleshy foods Calcium and Protein
(c) Fish Starch and Vitamin
(d) Milk Fibre and Minerals
ANS (C)
130. Blood is a :....
(a) reproductive tissue
(b) connective tissue
(c) epithelial tissue
(d) muscular tissue
ANS (B)
131. DPT vaccine is administered to prevent diseases like :......
(a) Diphtheria, Pertussis and Typhoid
(b) Diphtheria, Pertussis and Tetanus
(c) Dengue, Pertussis and Typhoid
(d) Dengue, Polio and Tetanus
ANS (B)
132. The disease that has been eradicated from the world, is :.....
(a) Small pox
(b) Leprosy
(c) Poliomyelitis
(d) Chicken pox
ANS (A)
133. In dicots the pollen grains possess : .....
(a) one germ pore
(b) two germ pores
(c) three germ pores
(d) four germ pores
ANS (C)
top 150 general science questions,
General Science questions for SSC, CGL,UPSC,NDA,CDS,PCS
GK questionaries in english,
134. 'Farad' is the unit of : .....
(a) Conductnce
(b) Capacitance
(c) Inductance
(d) Resistance
ANS (B)
135. Steel is more elasitc than rubber because it : ....
(a) is harder than rubber
(b) requires larger deforming force
(c) is never deformed
(d) is deformed very easily
ANS (D)
136. Identify the old term amongst the following group : .....
(a) Coaxial cable
(b) Optical fibre
(c) Twisted pair wire
(d) Microwaves
ANS (B)
137. Stains of rust on clothes can be removed by : .....
(a) H2O2
(b) Oxalic acid
(c) Petrol
(d) Alcohol
ANS (B)
138. The percentage of nitrogen present in ammonium sulphate is : .....
(a) 18%
(b) 21%
(c) 25%
(d) 30.5%
ANS (B)
139. Ethanol containing 5% water is known as :.....
(a) Absolute alcohol
(b) Dilute alcohol
(c) Power alcohol
(d) Rectified spirit
ANS (D)
140. The hormone used as an oral contraceptive is : ...
(a) Aldesterone
(b) Cortisone
(c) Progesterone
(d) Testosterone
ANS (C)
141. Expand the term IPCC: .....
(a) International Pollution Control Council
(b) International Panel of Climate Control
(c) Interim Panel of Climate Change
(d) Intergovernmental Panel on Climate Change
ANS (D)
142. Acceptable "Noise Pollution Level" in India range between: .....
(a) 10-15 dec
(b) 16-35 dec
(c) 40-45 dec
(d) 70-100 dec
ANS (C)
143. Endosulfan spray on cashew crop resulted in the pollution to the tune of tragedy in :....
(a) Tamil Nadu
(b) Kerala
(c) Andhra Pradesh
(d) Karnataka
ANS (B)
144. Hypothensmia occurs due to loss of excessive heat from body due to sudden low body temperature in : .....
(a) Snakes
(b) Frogs
(c) Human beings
(d) Lizards
ANS (C)
145. Solids which conduct electricity at higher temperature but not at lower temperature are called ....
(a) super-conductor
(d) metallic-conductor
(c) semi-conductor
(d) insulator
ANS (C)
146. Which one of the following has greatest mass?
(a) electron
(d) proton
(c) neutron
(d) hydrogen nucleus
ANS (C)
147. A television channel is characterised by.....
(a) frequency of transmitted signal
(b) velocity of transmitted signal
(c) physical dimension of television screen
(d) size of picture tube
ANS (A)
148. The density of water is 1 g/cc. This is strictly valid at .....
(a) 0°C
(b) 4°C
(c) 25°C
(d) 100°C
ANS (B)
149. The process of photosynthesis involves conversion of .....
(a) chemical energy into radiant energy
(b) chemical energy into mechanical energy
(c) solar energy into chemical energy
(d) mechanical energy into solar energy
ANS (C)
150. A colloidal system in which a liquid is dispersed in a liquid is called.....
(a) gel
(b) emulsion
(c) sol
(d) precipitate
ANS (B)
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