Multiple Choice QuestionsThe passivity of iron in concentrated nitric acid is due to
ferric nitrate coating on the metal
ammonium nitrate coating on the metal
a thin oxide layer coating on the metal
a hydride coating on the metal
Phosgene is common name of
carbon dioxide and phosphene
phosphoryl chloride
carbonyl chloride
carbon tetrachloride
Which of the following inert gas is soluble in water?
He
Ne
Ar
Xe
D.
Xe
Solubility of inert gas in water is due to dipole induced dipole interaction. As the size of the inert gas increases, the extent of polarisation increases. Consequently, the magnitude of the dipole induced dipole interaction increases and hence, the solubility of the noble gas in water increases from He to Rn.
A deep brown gas is formed by mixing two colourless gases which are
NO2 and O2
N2O and NO
NO and O2
NH3 and HCl
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