Which of the following compounds does not react with $NaNO_2$ and $HCl$?

Which tissue is mainly composed of fat-storing cells?

Which of the following is $NOT$ obtained when a mixture of methyl bromide and ethyl bromide is treated with sodium metal in the presence of dry ether?

Poling process is used for

Three bulbs of $40\, W$,$60\, W$,and $100\, W$ are connected in series to a $220\, V$ supply. Which bulb has the minimum resistance?

In the closest packing of atoms,there are