A pale blue gas with a fish like odour restores the colour of a blackened lead painting. The gas is also used as rocket fuel. It is

Options :
  1. oxygen
  2. ammonia
  3. sulphur dioxide
  4. ozone
Answer and Explanation :-

Answer: Option 2


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Life is like a recycling center, where all the concerns and dramas of humankind get recycled back and forth across the universe. But what you have to offer is your own sensibility, maybe your own sense of humor or insider pathos or meaning. All of us can sing the same song, and there will still be four billion different renditions.
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