Mechanical Physics - Study Mode
[#81] Insects can move on the surface of water without sinking due to
Correct Answer
(B) surface tension of water
[#82] In cold weather, aquatic animals survive even when water at the top layer of the lake freezes into ice because
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(D) Water has the highest density at 4°C so underneath the top layer of ice there is a layer of water
[#83] The size of the Respirable Suspended Particulate Matter (R.S.P.M.) in air is
Correct Answer
(D) less than 5μm (micron)
[#84] A body is just floating in a liquid if the body is slightly pressed down and released. It will
Correct Answer
(B) sink to the bottom
[#85] Two pieces of different metals, when completly immersed in water, experience equal upthrust, then
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(B) both pieces have equal volume