$Na_2CO_3$ reacts with $SO_2$ in an alkaline medium to form:

Which fibrous mineral substance can withstand red-hot temperatures without being damaged?

$NaHSO_3$ is heated to produce $H_2O$ and compound $'A'$. Which of the following statements is $INCORRECT$ about $'A'$?

Mark the oxide which is amphoteric in character.

Which of the following statements are correct?
$i$. The basic structural unit of silicates is $SiO_4^{4-}$
$ii$. Silicones are biocompatible
$iii$. Producer gas contains $CO$ and $N_2$
The correct option is

Which one of the following is present in the chain structure of silicates?