The protective coat of structural protein in viruses is made up of units called:

Restriction enzymes were discovered by

White vitriol is

The gas used in the hydrogenation of vegetable oils in the presence of nickel as catalyst is

$A$ network of four capacitors with capacitances $C_1 = C$,$C_2 = 2C$,$C_3 = 3C$,and $C_4 = 4C$ is connected to a battery of voltage $V$ as shown in the figure. The ratio of the charges on $C_2$ and $C_4$ is

$A$ body is thrown vertically upwards and reaches its maximum height in $t$ seconds. The total time from the time of projection to reach a point at half of its maximum height while returning (in seconds) is: