NCERT Exemplar I — task. Science CBSE, Class 10.

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Choose the correct answer:

1. Which of the following is a non-renewable source of energy?

Wood
Sun
Fossil fuels
Wind

2. Acid rain happens because

electrical charges are produced due to friction amongst clouds
sun leads to heating of the upper layer of the atmosphere
burning of fossil fuels release oxides of carbon, nitrogen and sulphur in the atmosphere
earth atmosphere contains acids

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