The current $I$ in the circuit will be:

The condition that $f(x)=a x^3+b x^2+c x+d$ has no extreme value, is

$\int_0^\pi \frac{x \tan x}{\sec x+\tan x} d x=$

The richest sources of vitamin $B_{12}$ are

$15 \text{ mL}$ of aqueous solution of $Fe^{2+}$ in acidic medium completely reacted with $20 \text{ mL}$ of $0.03 \text{ M}$ aqueous $Cr_2O_7^{2-}$. The molarity of the $Fe^{2+}$ solution is $.......... \times 10^{-2} \text{ M}$ (Round off to the Nearest Integer).

Temperate evergreen forests are found in