iitjee 2006

Q.16Q.17CH 3CH 3–CH–CH 2–CH3Cl /hv 2N (no. of Isomers)Fractional distillati on (F),⎯⎯⎯⎯⎯⎯⎯⎯→(N) and (F) are :(a) 6,4 (b) 4,4 (c) 6,6 (d) 3,3Ans. (a)OCOThe above reagent can besynthesis from the following compounds inalkaline medium following by acidification :(a)(c)CHOCHOCOOCH 3CH 3(b)(d)Ans.COOHCHOCOOCH 3COOHCAREER POINT, 112, SHAKTI NAGAR , KOTA (RAJ) PH. 2500492(a)Q.18 Which of the following is the only incorrectstatement ?zABCIdeal gasP(a) For the gas (A) ; a = 0 and it varies linearlywith P(b) For the gas (B), b = 0 & it varies linearly withpressure.(c) C represent a typical real gas for whichneither a nor b is equal to 0. If minima & thepoint of intersection is known with Z = 1, a &b can be calculated.(d) C will represent a typical vander Waals gaswhose a & b not equal to zero. If minima ofthe curve is known then value a & b can bedetermined.Ans. (d)Q.19 When CO 2 is passed through water which onethe species present :(a) CO 2 ,H 2 CO 3 ,HCO 3 – , CO 32–(b) HCO 3 – , CO 32–(c) CO 2 ,H 2 CO 3(d) H 2 CO 3 ,HCO 3–Ans.(a)10Q.20 The reaction of MgSO 4and NH 4OH + Na 2HPO 4results in the formation of white ppt. The ppt.are of :(a) MgNH 4PO 4(b) Mg 3(PO 4) 2(c) MgSO 4.MgCl 2(d) MgSO 4. 2MgCl 2Ans. (a)Section III : Questions based on comprehensionswith one correct answer.Passage : 1The reaction sequence given below representsHoffmann bromamide reaction in which RCONH 2is converted into R - NH 2:OC – NH 2ClΙNH 2ClVIOC – NH–BrClΙΙHN – C – O –ClVOClOΘC – N–Br ..ΙΙΙN = C = OElectron donating groups attached to phenylactivates the reaction. The above reactionsequence is interamolecular reaction.Q.21 The reagent used to convert (I) to (II) is :(a) Br 2/NaOH(b) KBr/NaOH(c) NBS(d) KBrAns. (a)Q.22 Rate determining step of reaction is :(a) formation of (II) (b) formation of (III)(c) formation of (IV) (d) formation of (VI)Ans. (c)ClΙVPAPER - IIT-JEE-2006