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2010 · Q2Science & TechnologyPhysicseasy

If a potato is placed on a pure paper plate which is white and unprinted and put in a microwave oven, the potato heats up but the paper plate does not. This is because

  1. (a)Potato is mainly made up of starch whereas paper is mainly made up of cellulose
  2. (b)Potato transmits microwaves whereas paper reflects microwaves
  3. (c)Potato contains water whereas paper does not contain water
  4. (d)Potato is a fresh organic material whereas paper is a dead organic material
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Official answer(c) Potato contains water whereas paper does not contain water

2015 · Q30Science & TechnologyPhysicsmoderate

In the context of modern scientific research, consider the following statements about ‘IceCube’, a particle detector located at South Pole, which was recently in the news : 1. It is the world’s largest neutrino detector, encompassing a cubic kilometre of ice. 2. It is a powerful telescope to search for dark matter. 3. It is buried deep in the ice. Which of the statements given above is/are correct?

  1. (a)1 only
  2. (b)2 and 3 only
  3. (c)1 and 3 only
  4. (d)1, 2 and 3
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Official answer(d) 1, 2 and 3