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Q. The substance that causes the worst air polution is
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Q. The boiling point of water decreases at higher altitudes is due to
Q. Which gas emitted by power stations causes acid rain?
Q. In which of the following is citric acid present?
Q. Seaweeds are important source of
Q. Which of the following elements is an actinide?
Q. The gas causing acid rain in an industrial area is
Q. The molecules of which gas have highest speed?
Q. Which among the given is not a method of preparing oxygen
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