Which gas burns with a blue flame?

The $INCORRECT$ statement regarding the structure of $C_{60}$ is :

Oxygen gas is not produced from the following decomposition reaction:

Correct statements among $(i)$ to $(iv)$ regarding silicones are:
$(i)$ they are polymers with hydrophobic character
$(ii)$ they are biocompatible
$(iii)$ in general,they have high thermal stability and low dielectric strength
$(iv)$ usually they are resistant to oxidation and used as greases.

In the following reaction,identify the nature of the product formed by the complete hydrolysis of the underlined atom at $R.T.$:
$\underline{P}_4O_6 + H_2O \longrightarrow H_3PO_3$

$A$ thin film of aluminum deposited on glass acts as a good mirror because ...............