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181. Who was awarded the Nobel Prize for the discovery of neutrons ?

A. Rutherford

B. Chadwick

C. Bohr

D. Goldstein

Explanation:

182. Barometer was invented by

A. J.L. Baird

B. W. Roentgen

C. Torricelli

D. Thomas Barrow

Explanation:

183. The method of producing graphite artificially was developed by

A. E. Acheson

B. E. Appleton

C. Carl Anderson

D. Alfred Kastler

Explanation:

184. The nucleic acid in cells was discovered by

A. E. Strasburger

B. A. Kossel

C. F. Miescher

D. Huxley

Explanation:

185. A glass chimney stops an oil lamp from smoking because

A. it increases the supply of oxygen to the flame by convection.

B. the heat produced ensures complete combustion of carbon particles.

C. Both the above

D. None of these

Explanation:

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