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Learn AIR FORCE MCQs with answers [Page 14 of Department 75]
The Kangchenjunga is the highest mountain peak in India and ranked 3rd highest summit in the world with an elevation of 8,586 m (28,169 ft). The highest mountain Kangchenjunga is located at the border of India and Nepal in the great Himalayas range,Sikkim.
140) Pieces of camphor placed on water move about rapidly. This is because of
(A) diffusion
(B) viscosity
(C) surface tension
(D) capillarity
Correct Answer - Option
(C)
Explanation :
the Camphor slowly dissolves in the water lowering the latter's surface tension in the immediate neighbourhood. The stronger pull exerted by the uncontaminated portion of water brings about a movement of the surface and the camphor particles are carried along with it. When after sometime the whole surface settles for the reduced tension, the movement of the camphor too short.
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