PSC General Science Questions Part 15
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- 351. Who invented the structure of an atom ?
- A) Mendaleev
B) Neils Bhor
C) Cavandish
D) None of these - Answer
- Correct Option : B
- Explanation
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- 352. The pollutant which gives rise to acid rain is?
- A) SO2
B) SO3
C) NO2
D) NO3 - Answer
- Correct Option : A
- Explanation
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- 353. Mumps is a disease caused by?
- A) Fungus
B) Bacterium
C) Virus
D) None of these - Answer
- Correct Option : C
- Explanation
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- 354. Which one of the following enzymes is found in human saliva?
- A) Typsin
B) pepsin
C) ptyalin
D) Rennin - Answer
- Correct Option : C
- Explanation
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- 355. The development of the Ultramicroscope makes use of the?
- A) Edison effect
B) Tyndall effect
C) Brownian motion
D) Zeeman effect - Answer
- Correct Option : B
- Explanation
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- 356. Focus of the lens of eye adjusted by......?
- A) Retina
B) Pelliary muscles
C) Cornea
D) Lens - Answer
- Correct Option : B
- Explanation
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- 357. The most suitable conductor is?
- A) Saline water
B) Fresh water
C) Pure water
D) None of these - Answer
- Correct Option : A
- Explanation
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- 358. The SI unit of magnetic induction is?
- A) tesla
B) henry
C) gauss
D) oersted - Answer
- Correct Option : A
- Explanation
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- 359. Parsec is the unit of
- A) Density
B) Distance
C) Momentum
D) Time - Answer
- Correct Option : B
- Explanation
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- 360. Detergents are Sodium or Potassium salts of
- A) Carboxylic acids
B) Adipic acid
C) Sulphonic acid
D) None of these - Answer
- Correct Option : C
- Explanation
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- 361. Thiokol is a
- A) Vulcanised rubber
B) Raw rubber
C) Natural rubber
D) Synthetic rubber - Answer
- Correct Option : D
- Explanation
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- 362. A protein solution on warming with concentrated nitric acid may turn yellow called?
- A) Xanthoproteic test
B) Biuret test
C) Millions test
D) Hopkins cole test - Answer
- Correct Option : A
- Explanation
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- 363. The Washing Soda is?
- A) Sodium Hydroxide
B) Potassium Hydroxide
C) Sodium Carbonate
D) Calcium Carbonate - Answer
- Correct Option : C
- Explanation
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- 364. The essential Vitamin for the functioning of reproduction?
- A) Vitamin A
B) Vitamin B
C) Vitamin C
D) Vitamin E - Answer
- Correct Option : D
- Explanation
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- 365. Typhoid fever is caused by?
- A) Virus
B) Allergy
C) Fungus
D) Bacteria - Answer
- Correct Option : D
- Explanation
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- 366. The effects of hormones on the body is?
- A) Stimulation of organs
B) Catalytic functions
C) Proper growth
D) Co ordination of functions of different organs - Answer
- Correct Option : A
- Explanation
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- 367. The chemical name of quartz is?
- A) Calcium oxide
B) Calcium phosphate
C) Sodium phosphate
D) Sodium silicate - Answer
- Correct Option : D
- Explanation
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- 368. `Lock Jaw` is difficulty in opening the mouth is symptom of?
- A) Plague
B) Tetanus
C) Cholera
D) None of these - Answer
- Correct Option : B
- Explanation
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- 369. The longest cell in the human body?
- A) Neuron cell
B) Epithelial cell
C) RBC
D) Beta cell - Answer
- Correct Option : A
- Explanation
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- 370. Colouring substance present in bile is?
- A) Haemoglobin
B) Melanin
C) Bilirubin
D) Xanthophyll - Answer
- Correct Option : C
- Explanation
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- 371. Hormone which helps in ripening of fruits?
- A) Cytokinin
B) Gibberllins
C) Florigens
D) Ethylene - Answer
- Correct Option : D
- Explanation
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- 372. Bronze is an alloy of ?
- A) Copper and Zinc
B) Copper and Aluminium
C) Copper and Tin
D) Copper and Nickel - Answer
- Correct Option : C
- Explanation
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- 373. Deficiency of Vitamin ____ affects the reproductive organs and causes sterility?
- A) D
B) E
C) A
D) C - Answer
- Correct Option : B
- Explanation
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- 374. Device used for detecting even feeble current?
- A) Induction Coil
B) Choke
C) Transformer
D) Galvanoscope - Answer
- Correct Option : D
- Explanation
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- 375. The sun`s heat and light energy reaches earth by?
- A) Conduction
B) Convection
C) Reflection
D) Radiation - Answer
- Correct Option : D
- Explanation
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