The depletion in Ozone layer is caused by ___________ .
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What is dry ice?
Which among the following metal is used for galvanization?
Hydrogenation process is associated with which of the following?
........... compound is used as a drying agent.
Which of the following inert gases is placed in period 4 of the periodic table?
An ∝ particle is _____.
Which chemical is present in the cells of cork of tree which makes them impervious to gases and water
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