Which of the following is added to chloroform to slow down its aerial oxidation in the presence of light?

Let $f(x)=e^x$,$g(x)=\sin ^{-1} x$ and $h(x)=f(g(x))$,then $\frac{h^{\prime}(x)}{h(x)}$ is equal to

The major product of the following reaction is

If the pair of straight lines given by $A x^2+2 H x y+B y^2=0$ $(H^2>A B)$ forms an equilateral triangle with the line $a x+b y+c=0$,then $(A+3 B)(3 A+B)$ is equal to :

Let $A$ and $B$ be subsets of a set $X$. Then

If the curves $x^2+p y^2=1$ and $q x^2+y^2=1$ are orthogonal to each other, then