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51.

Which among the following elements (metals) pollutes the air of a city having large number of automobiles?
(a)Lead
(b)Nickel
(c)Chromium
(d)Cadmium
Comment
Answer is: D

52.

Where was India's first computer installed?
(a)Indian Statistical Institute, Calcutta
(b)Indian Institute of Technology, Delhi
(c)Indian Institute of Science, Bangalore
(d)Indian Iron & Steel Co.Ltd., Burnpur
Comment
Answer is: A

53.

Hydrogen bomb is based on the principle of
(a)uncontrolled fusion reaction
(b)controlled fusion reaction
(c)uncontrolled fission reaction
(d)controlled fission reaction
Comment
Answer is: A

54.

Which type of glass is used for making glass reinforced plastic?
(a)Fibre glass
(b)Quartz glass
(c)Flint glass
(d)Pyrex glass
Comment
Answer is: A

55.

Supersonic Jet causes pollution by thinning of
(a)CO2 layer
(b)O2 layer
(c)O3 layer
(d)SO2 layer
Comment
Answer is: C

56.

Who invented penicillin?
(a)Louis Pasteur
(b)Alexander Fleming
(c)Dreser
(d)Edward Jenner
Comment
Answer is: B

57.

Scientists at the Tomato Genome Consortium (TGC) successfully sequenced the genomes of which of the following vegetables?
(a)Brinjal
(b)Onion
(c)Potato
(d)Tomato
Comment
Answer is: D

58.

Atomic Power Station is located in which of the following places in India?
(a)Kalpakkam
(b)Allahabad
(c)Pune
(d)Shimla
Comment
Answer is: A

59.

Solar energy is due to
(a)fission reactions
(b)combustion reactions
(c)chemical reactions
(d)fusion reactions
Comment
Answer is: D

60.

India's permanent Research Station 'Dakshin Gongotri' is located at
(a)Indian Ocean
(b)Himalayas
(c)Arabian Sea
(d)Antarctica
Comment
Answer is: D

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