81. Chloroform on reaction with air converts into : (1) COC (3) CO (2) CC14 (4) CC13(OH) 82. What will be the correct order of reactivity of the following alcohols, with Lucas reagent : (I) OH (II) (1) II>I>III (3) III>II>I OH (2) II > III>I (4) I>II>III 83. In which of the following reaction acetone will be formed as major product: (1) OH CH3-CH-CH3 PCC (2) QH I CrO3+ H2SO4 CH3-CH-CH3 (3) CH3-C=CH dil. HSO4 Acetone HgSO4 (4) All of these 84. 0 CH-C-CI I A B NaOH AICI Which of the following is correct: (1) 0 C-CH A (2) B = CHI3 (3) Both (1) and (2) (4) None of these