Title 13. HYDROCARBONS.pdf ✅

(1.) 1‐Butene can be converted to butane by the reaction with (a) Sn HCl − (b) Zn Hg − (c) 2 Pd / H (d) Zn HCl − (2.) The number of  (Sigma) and  (Pie) bonds in benzene is [Page: 385] (a) 6 and 6π (b) 6 and 3π (c) 12 and 3π (d) 3 and 3π (3.) Which of the following will not show geometrical isomerism ? [NCERT Exemplar, Page: 386] (a) (b) (c) (d) (4.) An alkene is formed from a carbocation by [Page: 389] (a) Elimination of H  ion (b) Elimination of H ion (c) Addition of H  ion (d) Addition of H ion (5.) Alkenes usually show which type of reaction [Page: 384] (a) Substitution (b) Addition (c) Elimination (d) None of these (6.) The test for unsaturation is confirmed by the decolorisation of which of the following [Page: 389]
(a) Iodine H O2 (b) CuSO4 solution (c) Bromine H O2 (d) All of these (7.) Propene on reaction with chlorine water gives [Page: 389] (a) (b) (c) (d) (8.) Which of the following alkenes will react faster with H 2 under catalytic hydrogenation conditions? [Page: 387] (a) C C= (b) C C= (c) C C= (d) C C= (9.) The intermediate formed during addition of HBr to propene in the presence of peroxides is [Page: 389] (a) CH CHCH Br 3 2 (b) CH C HCH 3 3  (c) CH CH C H 3 2 2  (d) CH H 3 2 CHBrC (10.) The main product of the following reaction is ( 6 5 2 ) 2 C H CO O CH CH CH HBr 3 2 = + ⎯⎯ ⎯ ⎯ ⎯ ⎯→ (a) ( ) CH CH Br CH 3 3 − (b) CH CH CH Br 3 2 2 (c) BrCH CH CH 2 2 − = (d) (11.) In which of the following reactions, addition does not occur according to Markovnikov’s rule [Page: 389]
(a) ROOR CH CH CH HCl 3 2 = + ⎯⎯⎯⎯→ (b) ROOR CH CH CH HBr 3 2 = + ⎯⎯⎯⎯→ (c) ROOR CH CH HI 2 2 = + ⎯⎯⎯⎯→ (d) ROOR CH CH CHCH HBr 3 3 = + ⎯⎯⎯⎯→ (12.) The number of Pi‐bond electrons in the following compound is [Page: 385] (a) 4 (b) 8 (c) 12 (d) 16 (13.) Cis‐2‐butene and trans‐2‐butene are [Page: 386] (a) Conformational Isomers (b) Structural Isomers (c) Configurational Isomers (d) Optical Isomers (14.) Count the  and π bonds in the following structure [Page: 385] ( ) 2 2 2 3 2 H C C CH CH CH = (a) 26 and 0π (b) 19 and 1π (c) 18 and 1π (d) 23 and 1π (15.) The molecules having dipole moment are [Page: 386] (a) 2,2,3,3‐tetramethylbutane (b) trans‐but‐2‐ene (c) 2f2‐Dimethylpropane (d) trans‐pent‐2‐ene
(16.) Matrix Match [NCERT Exemplar, Page: 391] ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) H 2 2 2 3 2 P d 2 2 2 3 3 2 2 2 2 2 Cu tube Heat 6 6 1 2 CH CH H O CH CH OH CH CH H CH CH CH CH C1 Cl CH CH Cl 3CH CH C H Column Column P Halogenation A B Q Polymerisation C R Hydrogenation D S Condensation T Hydration + = + ⎯⎯⎯→ = + − = + → − − −  ⎯⎯ ⎯ ⎯ ⎯⎯→ → (a) A → P, B → R, C → T, D → Q (b) A → R, B →P, C →T, D →S (c) A → T, B → R, C → Q, D → P (d) A → T, B → R, C → P, D → Q (17.) In which of the following can peroxide effect operate ? [Page: 389] (a) CH CH CH CH HCl 3 2 2 = + (b) CH CH CH CH HBr 3 2 2 = + (c) CH CH CHCH HBr 3 3 = + (d) CH CH CH CH HI 3 2 2 = + (18.) Matrix Match [Page: 391] ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) 2 3 3 3 3 2 2 2 2 2 3 6 5 6 6 2 1 2 . 4 / Column Reaction Column Reagent Used A CH CHBr HC CH P dil alkaline KMnO B CH C CCH CH CO COCH Q H O C CH CH HOCH CH OH R O Zn D C H MgBr C H S NaNH = →   → − = → − → (a) A → S, B → R, C → Q, D → P (b) A → P, B → Q, C → S, D → R (c) A → R, B → S, C → P, D → Q (d) A → S, B → R, C → P, D → Q (19.) A single compound of the structure is obtained from ozonolysis of which of the following cyclic compounds? [Page: 391]