A mixture of gases contains H₂ and O₂ gases in the
ratio of 1 : 4 (w/w). What is the molar ratio of the
two gases in the mixture ?

Cobalt (III) chloride forms several octahedral
complexes with ammonia. Which of the following
will not give test of chloride ions with silver nitrate
at 25ºC ?

The reaction

Consider the following compounds

A device that converts energy of combustion of fuels
like hydrogen and methane, directly into electrical
energy is known as :-

In which of the following compounds, then C - Cl
bond ionisation shall give most stable carbonium ion?