Practice Questions

Q52.A white sodium salt dissolves readily in water to give a solution which is neutral to litmus. When silver nitrate solution is added to the before mentioned solution, a white precipitate is obtained which does not dissolve in dilute nitric acid. The anion is: (1) CO2−3 (2) SO2−4 (3) S 2− (4) Cl−

Q52.Consider the following reaction and statements: [Co (NH3)4 Br2]+ + Br−→[Co (NH3)3 Br3] + NH3 (i) Two isomers are produced if the reactant complex ion is a cis-isomer. (ii) Two isomers are produced if the reactant complex ion is a trans-isomer. (iii) Only one isomer is produced if the reactant complex ion is a trans-isomer. (iv) Only one isomer is produced if the reactant complex ion is a cis-isomer. The correct statements are (1) (ii) and (iv) (2) (i) and (ii) (3) (i) and (iii) (4) (iii) and (iv)

Q53.The number of P −O bonds in P4O6 is: (1) 9 (2) 6 (3) 12 (4) 18

Q53.The oxidation states of Cr in [Cr (H2O)6] Cl3, [Cr (C6H6)2] and K2[Cr (CN)2(O)2(O2)(NH3 )] , respectively, are: (1) +3, 0 and +4 (2) +3, + 4 and +6 (3) +3, + 2 and +4 (4) +3, 0 and +6

Q53.Which of the following complexes will show geometrical isomerism? (1) Potassium tris(oxalato)chromate(III) (2) Pentaaquachlorochromium(II)chloride (3) Aquachlorobis(ethylenediamine)cobalt(II)chloride (4) Potassiumamminetrichloroplatinate(II)

Q53.Which of the following statements about colloids is false? (1) When silver nitrate solution is added to (2) Freezing point of colloidal solution is lower than potassium iodide solution, a negatively charged true solution at same concentration of a solute colloidal solution is formed (3) Colloidal particles can pass through ordinary (4) When excess of electrolyte is added to colloidal filter paper solution, colloidal particle will be precipitated

Q53.The correct combination is (1) [NiCl4]2−− Square planar; [Ni (CN)4]2−− (2) [Ni (CN)4]2−− tetrahedral; [Ni (CO)4]2−− paramagnetic paramagnetic (3) [NiCl4]2−− paramagnetic; [Ni (CO)4]− (4) [NiCl4]2−− diamagnetic; [Ni (CO)4]− square- tetrahedral planar

Q54.The major product of the following reaction is: (1) (2) (3) (4) JEE Main 2018 (08 Apr) JEE Main Previous Year Paper

Q54.Xenon hexafluoride on partial hydrolysis produces compounds ' X ' and ' Y '. Compounds ' X ' and ' Y ' and the oxidation state of Xe are respectively : (1) XeOF4(+6) and XeO3(+6) (2) XeO2(+4) and XeO3(+6) (3) XeOF4(+6) and XeO2F2(+6) (4) XeO2F2(+6) and XeO2(+4)

Q54.The correct order of spin-only magnetic moments among the following is: (Atomic number: Mn = 25, Co = 27, Ni = 28, Zn = 30 ) (1) [ZnCl4]2−> [NiCl4]2−> [CoCl4]2−> [MnCl4]2− (2) [CoCl4]2−> [MnCl4]2−> [NiCl4]2−> [ZnCl4]2− (3) [NiCl4]2−> [CoCl4]2−> [MnCl4]2−> [ZnCl4]2− (4) [MnCl4]2−> [CoCl4]2−> [NiCl4]2−> [ZnCl4]2−

Q54.The major product of the following reaction is: JEE Main 2018 (16 Apr Online) JEE Main Previous Year Paper (1) (2) (3) (4)

Q54.Which of the following will most readily give the dehydrohalogenation product? JEE Main 2018 (15 Apr) JEE Main Previous Year Paper (1) (2) (3) (4)

Q55.The major product of the following reaction is: (1) (2) (3) (4) JEE Main 2018 (15 Apr) JEE Main Previous Year Paper

Q55.The correct combination is : (1) [NiCl4]2− - square-planar; [Ni(CN)4]2− - (2) [Ni(CN)4]2− -tetrahedral; [Ni(CO)4] - paramagnetic paramagnetic (3) [NiCl4]2− - paramagnetic; [Ni(CO)4] - tetrahedral(4) [NiCl4]2− - dimagnetic; [Ni(CO)4] -square-planar

Q55.The total number of possible isomers for squareplanar [Pt(Cl) (NO2) (NO3)(SCN)]2− is: (1) 16 (2) 12 (3) 8 (4) 24

Q55.Phenol reacts with methyl chloroformate in the presence of NaOH to form product A. A reacts with Br2 to form product B. A and B are respectively (1) (2) (3) (4)

Q56.Which of the following compounds will most readily be dehydrated to give alkene under acidic condition? (1) 4 - Hydroxypentan - 2-one (2) 3- Hydroxypentan-2-one (3) 1-Pentanol (4) 2-Hydroxycyclopentanone

Q56.The major product formed in the following reaction is: JEE Main 2018 (15 Apr Shift 2 Online) JEE Main Previous Year Paper (1) (2) (3) (4)

Q56.The major product formed in the following reaction is: (1) (2) (3) (4)

Q56.The reagent(s) required for the following conversion are: (1) (i) NaBH4 (ii) Raney Ni /H2 (iii) H3O+ (2) (i) LiAlH4 (ii) H3O+ (3) (i) B2H6 (ii)DIBAL −H (iii)H3O+ (4) (i) B2H6 (ii) SnCl2 / HCl (iii) H3O+

Q56.The main reduction product of the following compound with NaBH4 in methanol is : (1) (2) (3) (4) JEE Main 2018 (15 Apr Shift 1 Online) JEE Main Previous Year Paper

Q57.The reagent(s) required for the following conversion are: (1) (i) NaBH4 , (ii) Raney Ni/H2 , (iii) H3O+ (2) (i) LiAlH4 , (ii) H3O+ (3) (i) B2H6 , (ii) DIBAL −H, (iii) H3O+ (4) (i) B2H6 , (ii) SnCl2/HCl, (iii) H3O+

Q57.The major product B formed in the following reaction sequence is: JEE Main 2018 (16 Apr Online) JEE Main Previous Year Paper (1) (2) (3) (4)

Q57.Phenol on treatment with CO2 in the presence of NaOH followed by acidification produces compound X as the major product. X on treatment with (CH3CO)2 O in the presence of catalytic amount of H2SO4 produces: JEE Main 2018 (08 Apr) JEE Main Previous Year Paper (1) (2) (3) (4)

Q57.The increasing order of the acidity of the following carboxylic acids is: (1) III < II < IV < I (2) I < III < II < IV (3) IV < II < III < I (4) II < IV < III < I