Chapter 24

The ether \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{OCH}_{2} \mathrm{C}_{6} \mathrm{H}_{5}\) on heating with concentrated HI produces (a) \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{I}\) and \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{2} \mathrm{OH}\) (b) \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{I}\) and \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{2} \mathrm{I}\) (c) \(\mathrm{C}_{6} \mathrm{H}_{3} \mathrm{OHand} \mathrm{C}_{6} \mathrm{H}_{3} \mathrm{CH}_{2} \mathrm{I}\) (d) \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{OH}\) and \(\mathrm{C}_{6} \mathrm{H}_{3} \mathrm{CH}_{2} \mathrm{OH}\)

One mole of diethyl ether on heating with conc, HI gives (a) I mole of \(\mathrm{C}_{2} \mathrm{H}_{3} \mathrm{I}\) and 1 mole of \(\mathrm{C}_{2} \mathrm{H}_{3} \mathrm{OH}\) (b) 2 moles of iodoethane (c) 2 moles of ethanol (d) lodoethane and ethanol but not in a \(1: 1\) mole ratio

Which statement is true ? (a) The boiling points of diethyl ether and ethyl alcohol are equal (b) Diethyl ether has dipole moment (c) Diediyl ether is highly soluble in water (d) Wiethyl ether is a Lewis acid

Ethyl bromide on heating with dry silver oxide gives (a) butane (b) ethene (c) ethoxyethane (d) ethanol

The \(\mathrm{C}-\mathrm{O}\) - C bond angle in the ether molecule is (a) \(180^{\circ}\) (b) \(150^{\circ}\) (c) \(90^{\circ}\) (d) \(110^{\circ}\)

The major product obtained on the monobromination (with \(\mathrm{Br}_{2} / \mathrm{FeBr}_{3}\) ) of the following compound isCOc1cccc(C)c1 (a) Cc1cccc(O)c1Br (b) COc1ccc(Br)c(C)c1 (c) COc1cc(C)cc(Br)c1 (d) COc1cc(C)ccc1Br

Distillation of diethyl ether to dryness may cause explosion. The reason is that (a) It is very volatile (b) It is very unstable (c) It polymerizes on heating to form an explosive compound (d) It may contain ether hydroperoxide formed by autooxidation which decomposes very rapidly on heating

Reaction between sodium cthoxide and bromoethane gives (a) methyl ethyl ether (b) Dimethyl ether (c) Diethyl ether (d) propane

The number of ethers pussitile with the molecular formula \(C_{4} H_{10} O\) is (a) Che (b) Iwo (c) Three (d) Four

Which one of these is formed on heating sodium phenoxide with ethyl iodide ? (a) Phenetole (b) Ethyl phenyl alcolol (c) Phenone (d) None of these

Anisole with conc. \(\mathrm{HNO}_{3}\) and conc. \(\mathrm{H}_{2} \mathrm{SO}_{4}\) gives (a) Phenol (b) Nitrobenzene (c) \(o\) and \(p\)-Nitroanisole (d) \(o\)-Nitroanisole

Product \(\mathrm{C}\) in the reaction \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{Br} \underset{\text { aqueous }}{\mathrm{NaOH}} \mathrm{A} \stackrel{\mathrm{Na}}{\mathrm{A}}-\mathrm{B} \stackrel{\mathrm{CH}_{3} \mathrm{l}}{\mathrm{C}}-\mathrm{C}\) (a) Propane (b) Ethyl iodide (c) Ethane (d) Ethyl methyl ether

The major organic product in the reaction, \(\mathrm{CH}_{3}-\mathrm{O}-\mathrm{CH}\left(\mathrm{CH}_{3}\right)_{2}+\mathrm{HI} \rightarrow\) Product, is (a) \(\mathrm{CH}_{3} \mathrm{OH}+\left(\mathrm{CH}_{3}\right)_{2} \mathrm{CHI}\) (d) none of these (c) \(\mathrm{ICH}_{2} \mathrm{OCH}\left(\mathrm{CH}_{3}\right)_{2}\)

-Phenylethanol may be prepared by the reaction of phenylmagnesium bromide with (a) \(\mathrm{HCHO}\) (b) \(\mathrm{CH}_{3} \mathrm{CHO}\) (c) \(\mathrm{CH}_{3} \mathrm{COCH}_{3}\) (d) OC1CC1

The ether that undergoes electrophilic substitution reactions is (a) \(\mathrm{CH}_{3} \mathrm{OC}_{2} \mathrm{H}_{5}\) (b) \(\mathrm{C}_{6} \mathrm{H}_{3} \mathrm{OCH}_{3}\) (c) \(\mathrm{CH}_{3} \mathrm{OCH}_{3}\) (d) \(\mathrm{C}_{2} \mathrm{H}_{3} \mathrm{OC}_{2} \mathrm{H}_{5}\)

An organic compound of molecular formula \(\mathrm{C}_{4} \mathrm{H}_{10} \mathrm{O}\) does not react with sodium. With excess of \(\mathrm{HI}\), it gives only one type of alkyl halide. The compound is (a) Ethoxyethane (b) 2 -Methoxypropane (c) 1-Methoxypropane (d) 1-Butanol

Which alkyl halide would be preferred for the synthesis of the following ether by Williamson's Synthesis ? CCOC(C)(C)C(a) n-propyl chloride (b) iso-propyl chloride (c) ethyl chloride (b) methyl chluide