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problem 1: Name the device which transforms mechanical energy into the electrical energy?

a) Generator
b) Motor
c) Transformer
d) Mass spectrometer

problem 2: The use of biodiesel contributes to the reduction in carbon emissions as:

a) The biodiesel manufacturing process employs electricity.
b) Biodiesel generates no CO2 on combustion.
c) The plants from which biodiesel is made absorb CO2
d) Diesel engines are more proficient than the petrol engines

problem 3: Name the organ in which the human body helps us sense acceleration?

a) The eyes
b) The ears
c) The skin
d) None

problem 4: We wear special glasses when watching 3-D movies at a theatre since:

a) 3-D movies employ special colors that can’t be sensed by the human eye.
b) 3-D movies are brighter than the ordinary movies and can hurt our eyes if seen openly.
c) The glasses permit our left and right eyes to see diverse images.
d) None of above.

problem 5: Fossils of sea creatures are at times found on high mountain tops. The most likely description for this is:

a) Sea levels were much higher in the past.
b) Land that once formed the sea floor was slowly pushed upwards to form mountain.
c) Intermittent ‘great floods’ moved the sea creatures onto the mountain tops.
d) The fossils are in fact of land animals which resemble sea creatures.

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  • Category:- Science
  • Reference No.:- M99147

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