Download NEET-UG 2013 Answer Key (Code - X) - Bansal Classes

Q.1 Which is the monomer of Neoprene in thefollowing?(1) CH2 CCH CH|CH(2) CH 2 CCH CH|2Cl(3) CH 2= CH – C CH(4) CH 2= CH – CH = CH 2Ans. 23Q.2 Amagneticmomentof1.73BMwillbe shownbyone amongthe following :(1) [Ni(CN) 4] 2– (2)TiCl 4(3) [CoCl 6] 4– (4) [Cu(NH 3) 4] 2+Ans. 4Q.3 A metal has a fcc lattice. The edge length ofthe unit cellis 404 pm. The densityof the metalis 2.72 g cm –3 . The molar mass of the metal is:(N AAvogadr'o constant = 6.02 × 10 23 mol –1 )(1) 30 g mol –1 (2) 27 g mol –1(3) 20 g mol –1 (4) 40 g mol –1Ans. 2Q.4 Structure of the compound whose IUPACname is 3–Ethyl-2-hydroxy–4–methylhex–3–en–5–ynoic acid is :(1)(2)(3)(4)2Q.5 Which of the following structure is similar tographite ?(1) B (2) B 4C(3) B 2H 6(4) BNAns. 4Q.6 Some meta-directing substituents in aromaticsubstitution are given. Which one is mostdeactivating?(1) –SO 3H (2) –COOH(3) –NO 2(4) –C NAns. 3Q.7 How many grams of concentrated nitric acidsolution should be used to prepare 250 mL of2.0 M HNO 3? The concentrated acid is 70%HNO 3.(1) 90.0 g conc. HNO 3(2) 70.0 g conc. HNO 3(3) 54.0 g conc. HNO 3(4) 45.0 g conc. HNO 3Ans. 4Q.8 Theorderofstabilityofthefollowingtautomericcompound is :CHCHCH233OH| C CHIO| | C CHIIOH|22O| | C CHO| | C CHO| | C CH C CHIII333(1) III > II > I (2) II > I > III(3) II > III > I (4) I > II > IIIAns. 1Ans. 1