Practice Questions

Q52.Which of the following is an example of homoleptic complex? (1) [Co(NH3)6]Cl3 (2) [Pt(NH3)2Cl2] (3) [Co(NH3)4Cl2] (4) [Co(NH3)5Cl]Cl2

Q53.Fluorination of an aromatic ring is easily accomplished by treating a diazonium salt with HBF4 . Which of the following conditions is correct about this reaction? (1) NaF/Cu (2) Cu2O/H2O (3) Only Heat (4) NaNO2/Cu

Q53.Which one of the following complexes shows optical isomerism? (en=ethylendiamine) (1) trans [Co(en)2 Cl2] Cl (2) [Co(NH3)4 Cl2] Cl (3) [Co (NH3)3 Cl3] (4) cis [Co(en)2 Cl2]Cl

Q53.Which one of the following complexes will consume more equivalents of aqueous solution of AgNO3 ? (1) Na2[CrCl5(H2O)] (2) Na3[CrCl6] (3) [Cr(H2O)5Cl]Cl2 (4) [Cr(H2O)6]Cl3

Q54.The pair having the same magnetic moment is: [At. No. : Cr = 24, Mn = 25, Fe = 26, Co = 27] (1) [Mn (H2O)6]2+ and [Cr(H2O)6]2+ (2) [CoCl4]2− and [Fe(H2O)6]2+ (3) [Cr(H2O)6]2+ and [CoCl4]2− (4) [Cr(H2O)6]2+ and [Fe(H2O)6]2+ JEE Main 2016 (03 Apr) JEE Main Previous Year Paper

Q54.Identify the correct trend given below: (Atomic No. = Ti : 22, Cr : 24 and Mo : 42) (1) Δ of [Cr(H2O)6]2+ > [Mo(H2O)6]2+ and (2) Δ of [Cr(H2O)6]2+ > [Mo(H2O)6]2+ and Δ of [Ti(H2O)6]3+ > [Ti(H2O)6]2+ Δ of [Ti(H2O)6]3+ < [Ti(H2O)6]2+ (3) Δ of [Cr(H2O)6]2+ < [Mo(H2O)6]2+ and (4) Δ of [Cr(H2O)6]2+ < [Mo(H2O)6]2+ and Δ of [Ti(H2O)6]3+ > [Ti(H2O)6]2+ Δ of [Ti(H2O)6]3+ < [Ti(H2O)6]2+

Q54.Which one of the following reagents is not suitable for the elimination reaction? (1) NaI (2) NaOEt/EtOH (3) NaOH/H2O, Δ (4) NaOH/H2O −EtOH JEE Main 2016 (10 Apr Online) JEE Main Previous Year Paper

Q55.The product of the reaction give below is: (1) (2) (3) (4) Q56. 2- chloro - 2 - methylpentane on reaction with sodium methoxide in methanol yields: (i) (ii) (iii) (1) iii only (2) i and ii (3) i and iii (4) All of these

Q55.Bromination of cyclohexene under conditions given below yields: (1) (2) (3) (4)

Q55.The gas evolved on heating CH3MgBr in methanol is: (1) Methane (2) Ethane (3) Propane (4) HBr

Q56.Bouveault-Blanc reduction reaction involves: (1) Reduction of an acyl halide with H2/Pd. (2) Reduction of an anhydride with LiAlH4 (3) Reduction of an ester with Na/C2H5OH . (4) Reduction of a carbonyl compound with Na / Hg and HCl.

Q56.The correct statement about the synthesis of erythritol (C(CH2OH)4) used in the preparation of PETN is (1) The synthesis requires three aldol condensations (2) Alpha hydrogen of ethanol and methanol are and one Cannizzaro reaction. involved in this reaction. (3) The synthesis requires two aldol condensation (4) The synthesis requires four aldol condensations and two Cannizzaro reactions. between methanol and ethanol.

Q57.The N which contribute least to the basicity of the compound is : (1) N -9 (2) N -3 (3) N -1 (4) N -7

Q57.In the Hoffmann bromamide degradation reaction, the number of moles of NaOH and Br2 used per mole of amine produced are: (1) Two moles of NaOH and two moles of Br2 (2) Four moles of NaOH and one mole of Br2 (3) One mole of NaOH and one mole of Br2 (4) Four moles of NaOH and two moles of Br2

Q57.The test to distinguish primary, secondary and tertiary amines is: (1) Sandmeyer's reaction (2) Carbylamine reaction (3) Idoform test (4) C6H5SO2Cl

Q58.Assertion: Rayon is a semisynthetic polymer whose properties are better than natural cotton. Reason: Mechanical and aesthetic properties of cellulose can be improved by acetylation. (1) Both assertion and reason are correct, but the (2) Both assertion and reason are correct, and the reason is not the correct explanation for the reason is the correct explanation for the assertion. assertion. (3) Assertion in incorrect statement, but the reason is (4) Both assertion and reason are incorrect. correct.

Q58.Which of the following statements about low density polythene is FALSE? JEE Main 2016 (03 Apr) JEE Main Previous Year Paper (1) Its synthesis required dioxygen or a peroxide (2) It is used in the manufacture of buckets, dust - initiator as a catalyst bins etc. (3) Its synthesis requires high pressure (4) It is a poor conductor of electricity

Q58.Which of the following polymers is synthesized using a free radical polymerization technique? (1) Terylene (2) Melamine polymer (3) Nylon 6, 6 (4) Teflon

Q59.The artificial sweetener that has the highest sweetness value in comparison to cane sugar is: (1) Sucralose (2) Aspartame (3) Saccharin (4) Alitame JEE Main 2016 (09 Apr Online) JEE Main Previous Year Paper

Q59.Which of the following is an anionic detergent? (1) Cetyltrimethyl ammonium bromide (2) Glyceryl oleate (3) hexadecyltrimethyl ammonium bromide (4) Sodium lauryl sulphate

Q59.Which of the following is a bactericidal antibiotic? (1) Ofloxacin (2) Tetracycline (3) Chloramphenicol (4) Erythromycin

Q60.Thiol group is present in: (1) Cysteine (2) Methionine (3) Cytosine (4) Cystine

Q60.Consider the following sequence for aspartic acid: The pH (Isoelectric point) of aspartic acid is: (1) 3.65 (2) 2.77 (3) 5.74 (4) 1.88

Q60.Observation of "Rhumann's purple" is a confirmatory test for the presence of: (1) Starch (2) Reducing sugar (3) Protein (4) Cupric ion

Q61.If the equations x2 + bx −1 = 0 and x2 + x + b = 0 have a common root different from −1, then |b| is equal to : (1) 2 (2) 3 (3) √3 (4) √2