An element Z contains 80% of \( {}^{16}_{8}\mathrm{Z} \) and 20% of \( {}^{18}_{8}\mathrm{Z} \). Its relative atomic mass is

The IUPAC name for \( \mathrm{CH_3CH_2COOCH_2CH_3} \) is

Hydrocarbons which will react with Tollen's reagent conform to the general formula

A secondary alkanol can be oxidized to give an

Which of the following will give a precipitate with an aqueous solution of copper (I) chloride?

A certain hydrocarbon on complete combustion at s.t.p produced 89.6dm3 of CO2 and 54g of water. The hydrocarbon should be

2-methylprop-1-ene is an isomer of

A synthetic rubber is obtained from the polymerization of

The IUPAC name of the compound \(\mathrm{CF_3CHBrCl}\) is