The food substances which get oxidised easily can be kept for longer duration by adding

When Arsenic atoms are added to Germanium Lattice it becomes a/an 

Who discovered the life cycle of malaria parasites in mosquitoes? 

Maximum density of water is-

Which of the following is not a vector quantity ?

During which process does the substance get from oxygen or is hydrogen removed from it? 

Give an example of a slat which gives an aqueous solution of pH less than 7.

Basic scientific principle behind a nuclear reactor is