The monomers of $Buna-S$ rubber are

The minimum force required to move a body up an inclined plane is three times the minimum force required to prevent it from sliding down the plane. If the coefficient of friction between the body and the inclined plane is $\frac{1}{2 \sqrt{3}}$,then the angle of the inclined plane is (in $^{\circ}$)

In the reaction of $BaO_2$ with dilute $H_2SO_4$,what are the oxidation states of the most electronegative element in the products?

Teak wood is obtained from which plant?

Which of the following kingdoms includes multicellular producers?

Which one of the following halogens liberates oxygen,when passed through hot concentrated $KOH$ solution?