What would be the reactant and reagent used to obtain 2, 4-dimenthyl pentan-3-ol? (a) Propanal and propyl magnesium bromide. (b) 3-methylbutanal and 2-methyl magnesium iodide. (c) 2-dimethylpropanone and methyl magnesium iodide. (d) 2-methylpropanal and isopropyl magnesium iodide.

Which of the following alcohols reacts most readily with Lucas reagent?

1-Phenylethanol can be prepared by the reaction of benzaldehyde with (a) methyl bromide. (b) ethyl iodide and magnesium. (c) methyl iodide and magnesium. (d) methyl bromide and aluminium bromide.

A compound X with the molecular formula \(C_2\)\(H_8\)O can be oxidised to another compound Y whose molecular formulae is \(C_3\)\(H_6\)\(O_2\). The compound X may be (a) \(CH_3\)\(CH_2\)\(OCH_3\). (b) \(CH_3\)\(CH_2\)CHO. (c) \(CH_3\)\(CH_2\)\(CH_2\)OH. (d) \(CH_3\)\(CHOHCH_3\).

One mole of ethyl acetate on treatment with an excess of \(LiAlH_4\) in dry ether and subsequent acidification produces (a) 1 mole acetic acid + 1 mole ethyl alcohol. (b) 1 mole ethyl alcohol + 1 mole methyl alcohol. (c) 2 moles of ethyl alcohol. (d) 1 mole of 2-butanol.

Order of esterification of alcohols are (a) 3° > 1° > 2°. (b) 2°> 3° > 1°. (c) 1 ° > 2° > 3°. (d) None of these.

What happens when tertiary butyl alcohol is passed over heated copper at 300°C? (a) Secondary butyl alcohol is formed. (b) 2-methylpropene is formed. (c) 1-butene is formed. (d) Butanol is formed.

Which of the following alcohols gives 2-butenc on dehydration by conc.\(H_2\)\(SO_4\)? (a) 2-methyl propene-2-ol. (b) 2-methyl 1 -propanol. (c) Butane-2-ol. (d) Butane 1-ol.

Which of the following alcohols will give the most stable carbocation during dehydration? (a) 2-methyl-1-propanol. (b) 2-methyl-2-propanol. (c) 1-Butanol. (d) 2-Butanol.

Which of the following compounds will be most easily attacked by an electrophile?

Which of the following reagents cannot, be used to oxidise primary alcohols to aldehydes? (a) \(CrO_3\) in anhydrous medium. (b) \(KMnO_4\) in acidic medium. (c) Pyridinium chlorochromate. (d) Heat in the presence of Cu at 573 K.

A Grignard reagent may be made by reacting magnesium with a) Methyl amine. b) Diethyl ether. c) Ethyl iodide. d) Ethyl alcohol.

Aryl halides can not be prepared by the reaction of arylalcohols with \(PCl_3\), \(PCl_5\) or \(SOCl_2\) because : (a) phenols are highly stable compounds. (b) carbon-oxygen bond in phenols has a partial doublebond character. (c) carbon-oxygen bond is highly polar (d) all of these

Benzene reacts with \(CH_3\)Cl in the presence of anhydrous \(AlCl_3\) to form: (a) chlorobenzene (b) benzylchloride (c) xylene (d) toluene

Which is the correct increasing order of boiling points of the following compounds? 1-Iodobutane, 1-Bromobutane, 1-Chlorobutane, Butane (a) Butane < 1-Chlorobutane < 1-Bromobutane < 1-Iodobutane. (b) 1-Iodobutane < 1-Bromobutane < 1-Chlorobutane < Butane. (c) Butane < 1-Iodobutane < 1-Bromobutane < 1-Chlorobutane. (d) Butane < 1-Chlorobutane < 1-Iodobutane < 1-Bromobutane.