H and Br
H and H
Na and Br
N and N
Which component is used to harden the rubber in the vulcanization process?
Which compound is a nonelectrolyte?
Which electromagnetic radiation is emitted by radioactive substances
Which gas emitted by power stations causes acid rain?
Which gas is used as fire extinguisher ?
Which is the gas used for making vegetables and vanaspathi from vegetable oils?
Which is the highest quality of hard coal?
Which metal does not present in the alloy German Silver?
Which method will be employed to test the hardness of water?
Which mixture of metal is used in the Gunmetal?
