The most stable form of sulphur allotrope is

Write the conditions to maximize the yield of $H_2SO_4$ by Contact process.

Which of the following elements is $NOT$ a member of group $16$ of the periodic table?

Anomalous behaviour of oxygen is due to its

Below are two statements. One is labeled as Assertion $(A)$ and the other as Reason $(R):$
Assertion $(A):$ $H_2Te$ is more acidic than $H_2S$.
Reason $(R):$ The bond dissociation enthalpy of $H_2Te$ is less than that of $H_2S$.
In the context of the above statements,choose the correct answer from the following options:

Statement $(A)$ Sulphur vapour is paramagnetic. Statement $(B)$ Reaction of dil. $HCl$ with finely divided iron forms $FeCl_3$ and $H_2$ gas. The correct answer is