General science multiple choice questions Test no – 7 PDF

337. In human beings, infection of plasmodium causes
(a) Cholera
(b) Influenza
(c) Malaria
(d) Typhoid

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Ans-C

338. In timber, dry rot is caused by
(a) Insects
(b) Bacteria
(c) Fungi
(d) None of these

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Ans-C

339. During the chloride test, white fumes are produced due to the formation of
(a) Sodium chloride
(b) Ammonium chloride
(c) Sodium nitrate
(d) Silver nitrate

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Ans-B

340. Properties of elements are determined by the
(a) Atomic weight
(b) Atomic number
(c) Neutron
(d) Proton

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Ans-B

341.Long distance photographs can be transmitted with the help of
(a) Radiophotography
(b) α-rays
(c) β-rays
(d) γ-rays

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Ans-A

342. Meningitis is caused by the
(a) Fungi
(b) Bacteria
(c) Virus
(d) Meningococcus germ

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Ans-D

343. A body is floating in water at 4°C. If the temperature reaches 0°C, then the body will
(a) Sink fully
(b) Float fully
(c) Have some more part of it submerged under water
(d) Sink first and then float

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Ans-D

344. The striking surface of safety matches contains
(a) White phosphorus
(b) Yellow phosphorus
(c) Red phosphorus
(d) Phosphorus pentoxide

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Ans-C

345. A solid needle placed horizontally on the surface of the water floats due to
(a) Capillary action
(b) Surface tension
(c) Cohesion
(d) Adhesion

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Ans-B

346. The effect of light on photo-cells is the production of the
(a) Energy
(b) Photosynthesis
(c) Current
(d) Magnetic field

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Ans-C

347. The disease which is caused by a virus is
(a) Tuberculosis
(b) Small Pox
(c) Tetanus
(d) Cholera

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Ans-B

348. The size of viruses is so small that they can be seen with the help of
(a) A telescope
(b) A magnifying glass
(c) An electron microscope
(d) None of these

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Ans-C

349.On which of the following planets, scientists are hopeful that life may exist ?
(a) Pluto
(b) Mars
(c) Saturn
(d) Jupiter

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Ans-B

350. Milk is pasteurised in order to
(a) Destroy microorganisms
(b) Increase the protein content
(c) Increase the fat content
(d) Detect adulteration

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Ans-B

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