Chemistry MCQs for NEET — Practice Questions with Answers

(c) ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{Br} \stackrel{\mathrm{NaOH} \left(\mathrm{aq}\right)}{\to }{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}\stackrel{\mathrm{Na}}{\to }{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{ONa}\stackrel{{\mathrm{CH}}_3\mathrm{I}}{\to }{\mathrm{C}}_2{\mathrm{H}}_5{\mathrm{OCH}}_3$

(b) C₂H₅OH+HOC₂H₅ →C₂H₅OC₂H₅
                               -H2O

(c) CH₃OC₂H₅ + HI → CH₃I + C₂H₅OH; O-atom goes with higher alkyl gp.

(c) Glycerol decolourises pink colour of phenolphthalein in borax solution in cold, which however regenerates on heating.

(d) Glycerol is used as lubricant in watches.

(d) Bond angle is 110° due to steric hindrance of bulky alkyl gps.

(a) Pyroligneous acid obtained during destructive distillation of wood contains mainly acetic acid (9 10%), methyl alcohol (2-25%) and acetone about 0.5%; the other distillation products are wood gas, wood charcoal, wood tar.

(a) CH₃CHO$\stackrel{\mathrm{Reduction}}{\to }$CH₃CH₂OH

(a) CH₃.CH₂OH $\to$CH₃COOH; secondary and tertiary alcohols give acids of less carbon atoms.

(c) Methanol possesses maximum toxicity order, Ethanol has minimum.