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It is a odourless gas
It is insoluble in water
Its aqueous solution turns red litmus blue
It is a yellowish gas
Ordinary table salt is sodium chloride. What is baking soda?
Ornithophily refers to the pollination through which among the following?
Oxide of sulphur present in the atmosphere are washed down by rains to cause :
Oxygen has (+) oxidation number only in
Oxygen was independently discovered by
Ozone depletion in the atmosphere is mainly caused by
Ozone layer of atmosphere absorbs:
Ozonolysis of an organic compound gives formaldehyde as one of the products. This confirms the presence of
Passing a battery current through a solution of brine will produce
Permanent - hardness of water may be removed by addition of