PSC Previous Years GS Questions Part 10

PSC General Science Questions Part 10

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• 226. The scientist who developed the bacteria which is capable to destroy petroleum is
• A) Anand Chakravarthy
  B) Dr. Kasthuri Rangan
  C) Dr. M.S. Swaminathan
  D) J.V.Bose
• Answer
• Correct Option : A
• Explanation

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• 227. Excessive alcoholic consumption causes
• A) Jaundice
  B) Hepatitis
  C) Heart attach
  D) Cirrhosis
• Answer
• Correct Option : D
• Explanation

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• 228. Which of the following salts is blue in colour?
• A) Ferrous Sulphate
  B) Copper Sulphate
  C) Sodium Chloride
  D) Potassium Chloride
• Answer
• Correct Option : B
• Explanation

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• 229. The Celsius scale is used to measure:
• A) Length
  B) Velocity
  C) Temperature
  D) Weight
• Answer
• Correct Option : C
• Explanation

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• 230. Ammonia is a :
• A) Fertilizer
  B) Refrigerant
  C) Insecticide
  D) Fire extinguisher
• Answer
• Correct Option : B
• Explanation

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• 231. Which gas is used in the preparation of soda water?
• A) Carbon monoxide
  B) Nitrogen dioxide
  C) Sulpher dioxide
  D) Carbon dioxide
• Answer
• Correct Option : D
• Explanation

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• 232. Hibernation is
• A) Winter sleep
  B) Autumn sleep
  C) Summer sleep
  D) Spring sleep
• Answer
• Correct Option : A
• Explanation

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• 233. Which of the following is a water borne disease?
• A) Cancer
  B) Influenza
  C) Diabetes
  D) Diarrhea
• Answer
• Correct Option : D
• Explanation

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• 234. Urea is produced in the human body in
• A) Kidney
  B) Urinary Bladder
  C) Liver
  D) Blood
• Answer
• Correct Option : C
• Explanation

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• 235. Tetrachlorodibenzo dioxin is a:
• A) Poison
  B) Alkali
  C) Fatty acid
  D) Vitamin
• Answer
• Correct Option : A
• Explanation

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• 236. Chromosomes are made up of:
• A) protein and nucleus
  B) cytoplasm and DNA
  C) protein and cytoplasm
  D) DNA and protein
• Answer
• Correct Option : D
• Explanation

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• 237. What is the source of electric energy in an artificial satellite?
• A) Thermopile
  B) Solar cell
  C) Dynamo
  D) Mini nuclear reactor
• Answer
• Correct Option : B
• Explanation

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• 238. A drop of water is spherical due to
• A) surface tension
  B) low temperature
  C) air resistance
  D) viscosity
• Answer
• Correct Option : A
• Explanation

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• 239. Sex of a child is determined by
• A) blood group of father
  B) chromosome of mother
  C) RH factor of parents
  D) chromosome of father
• Answer
• Correct Option : D
• Explanation

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• 240. The Science of the study of fungi is called:
• A) Morphology
  B) Mycology
  C) Geology
  D) Gerontology
• Answer
• Correct Option : B
• Explanation

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• 241. A sharp knife cuts more easily than a blunt knife because:
• A) it exerts less pressure
  B) it exerts more pressure
  C) of the law of inertia
  D) it is easy to handle
• Answer
• Correct Option : B
• Explanation

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• 242. A mixture of water and alcohol can be separated by:
• A) evaporation
  B) decantation
  C) distillation
  D) filtration
• Answer
• Correct Option : C
• Explanation

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• 243. A glass rod placed in a colourless liquid seems to disappear because:
• A) the glass and the liquid have the same refractive index
  B) the glass and the liquid have the same colour
  C) the glass and the liquid are of the same density
  D) the liquid wets the glass by capillary action
• Answer
• Correct Option : A
• Explanation

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• 244. Perspiration is maximum when temperature is:
• A) high and air is dry
  B) high and air is humid
  C) low and air is humid
  D) low and air is dry
• Answer
• Correct Option : B
• Explanation

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• 245. When taken out of water, fish die because:
• A) they get much oxygen
  B) the body temperature rises high
  C) they are unable to respire
  D) they are unable to drink water
• Answer
• Correct Option : C
• Explanation

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• 246. The study of fruits is known as
• A) dendrology
  B) odontology
  C) pomology
  D) Bromatology
• Answer
• Correct Option : C
• Explanation

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• 247. The device which converts sound energy into electrical energy is called
• A) amplifier
  B) speaker
  C) transmitter
  D) microphone
• Answer
• Correct Option : D
• Explanation

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• 248. Instrument used for transmitting visible moving images of wireless waves is
• A) television
  B) telemeter
  C) telescope
  D) stereoscope
• Answer
• Correct Option : A
• Explanation

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• 249. The red colour of ripe tomatoes is due to the presence of
• A) Chlorophyll
  B) Carotenes
  C) Vitamins
  D) Hormones
• Answer
• Correct Option : B
• Explanation

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• 250. Halley’s comet is visible after every
• A) 76 years
  B) 125 years
  C) 1000 years
  D) 100 years
• Answer
• Correct Option : A
• Explanation

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