General science multiple choice questions Test no – 7 PDF

313. Who was awarded the Nobel Prize for the discovery of neutron?
(a) James Chadwick
(b) Niels Bohr
(c) J.J. Thomson
(d) C.V. Raman

Ans-A

314. In the case of a concave mirror, the image of an object is
(a) Real, inverted and diminished when the object lies beyond the centre of curvature
(b) Real, erect and diminished when the object lies beyond the centre of curvature
(c) Real, inverted and of the same size as the object when the object , lies between the centre of curvature and focus
(d) Real, inverted and magnified when the object lies at infinity

Ans-A

315. Ribosomes contain a large quantity of
(a) DNA
(b) Haemoglobin
(c) RNA
(d) None of these

Ans-C

316. In human brain, the seat of memory is located in
(a) Cerebellum
(b) Medulla Oblongata
(c) Cortex
(d) Cerebrum

Ans-A

317. The most electro negative element is
(a) Fluorine
(b) Nitrogen
(c) Chlorine
(d) Oxygen

Ans-A

318. The velocity of sound is maximum through
(a) Air
(b) Water
(c) Vacuum
(d) Steel

Ans-D

319. Dichloro diphenyl trichloro ethane (DDT) is a/an
(a) Explosive
(b) Fungicide
(c) Insecticide
(d) Manure

Ans-C

320. Cholera is caused by
(a) The excess of uric acid in the body
(b) The germ salmonella typhae
(c) Vibrio cholera
(d) Streptococcus

Ans-C

321. Green colour of plants is due to the presence of
(a) Chlorophyll
(b) Mitochondria
(c) Xylem
(d) Sugar

Ans-A

322. Diamond glitters due to the phenomenon of
(a) Reflection
(b) Refraction
(c) Scattering
(d) Total internal reflection

Ans-D

323. Pancreas secretes
(a) Hormone insulin
(b) Renin
(c) Vitamin A
(d) Creatin

Ans-A

324. The reaction in which two light nuclei react to form a heavy nucleus accompanied by the release of a large amount of energy is called
(a) Polymerization
(b) Vulcanization
(c) Nuclear fission
(d) Nuclear fusion

Ans-D


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