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World Health Day is celebrated worldwide every year on the 7th of April. Various programs and arrangements are managed by the World Health Organisation . It was the first time celebrated in 1950.
The element used for making solar cells is
Wood spirit is
Bakelite is a copolymer of Phenol and
Spirit in contact with body gives cool sensation because it is:
The particle required to continue the chain process of Uranium fission is:
Which one of the following elements is used in the manufacture of fertilizers?
When Hydrogen starts burning in air it produces?
Which of the inert gases can form compounds?
Alcoholic (OH) group can be identified by
The chief source of naphthalene is