The suspension of slaked lime in water is known as

If the angles of a triangle are in the ratio $1: 1: 4$,then the ratio of the perimeter of the triangle to its largest side is

What is the native home of the wild jungle fowl?

$A$ metal $M$ and its compound can give the following observable changes in a sequence of reactions:

The general solution of $\sin x - \cos x = \sqrt{2}$,for any integer $n$ is

$A$ plano-convex lens is made of glass with a refractive index of $1.5$. The radius of curvature of its convex surface is $R$. What is its focal length?