1. Which of the following can undergo Hoffmann reaction most easily?1)2 CONHX2)2 CONH3 CH3)2 CONHCN4)2 CONH3 OCH2. he correct order of decreasing !ase strength among the amines gi"en is 2 NH#$)2 NH#$$)2 NO#$$$)3 NHCH#$%)2 NH3 CH1) $$$&$&$%&$$ 2) $%&$$$&$&$$3) $&$%&$$$&$$ 4)$&$$$&$%&$$3. Which of the following reaction can 'roduce aniline as the main 'roduct? ()) * 2C H N+,n - .+H +/)) * 2 4C H N+,n - NH Cl +C)) * 2 4C H N+0i (l H +1)) * 2C H N+2n - HCl +4. Which will gi"e 'ositi"e isocyanide test 1)C H3CH3NH22)C H3NHCH33)C H3NH CH34)C H3NCH3CH3*. (n organic com'ound u'on hydrolysis 'roduces two com'ounds one 'roductga"e sil"er mirror test3 other 'roduct reacts with Hins!erg reagent to 'roduce anal4ali insolu!le 'roduct. he organic com'ound is 1)3 2 355OCH CH C NHCH 2)HCO3 CHN3 CH3)3 NH C 2 CH 3 CHO4)C2 CH3 CHOHNH). he $67(C name of OCNis1) 28methyl838#18methylethyl)848o9o'entanenitrile2) 48cyano:38#18methylethyl):2:'entanone3) 38acetyl:2:cyano:4:methyl'entane4) 3:ethanoyl:2:methyl:3:#1:methylethyl) 'entanenitrile;. (cid strength of the cont gi"e

2 CHOH$2 CH$$

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$%OH%1) $3 $$3 $% 2) $$3 %3 $ 3) $3 $$3 $%3 %4) $$$ only