White vitriol is

The sensitivity of a galvanometer that measures current is decreased by $\frac{1}{40}$ times by using a shunt resistance of $10 \Omega$. Then,the value of the resistance of the galvanometer is (in $Omega$)

If the angular momentum of a rotating body is increased by $200\ \%$,then its kinetic energy of rotation will be increased by .......... $\%$

Observe the following statements:
$I$. If $dy + 2xy dx = 2e^{-x^2} dx$,then $ye^{x^2} = 2x + c$.
$II$. If $ye^{-x^2} - 2x = c$,then $dx = (2e^{-x^2} - 2xy) dy$.
Which of the following is a correct statement?

In Whittaker's classification system,which kingdom acts as the primary producer?

Which one of the following statements is wrong?