Silicon is the main constituent of

Identify the correct statements:
$I)$ $CO$ reduces the oxygen carrying ability of blood.
$II)$ Producer gas contains $CO$ and $N_2$.
$III)$ $C-O$ bond length in $CO_2$ is $115 \ pm$.

The number of ionisable hydrogens present in the product obtained from a reaction of phosphorus trichloride $(PCl_3)$ and phosphonic acid $(H_3PO_3)$ is

Which of the following statements is incorrect regarding zeolites?

Which property of $CO_2$ makes it biologically and geo-chemically important?

Which of the following species is not stable?