Practice Questions

Q44.The total number of acidic oxides from the following list is: NO, N2O, B2O3, N2O5, CO, SO3, P4O10 (1) 5 (2) 4 (3) 3 (4) 6

Q44.The dark purple colour of KMnO4 disappears in the titration with oxalic acid in acidic medium. The overall change in the oxidation number of manganese in the reaction is (1) 5 (2) 1 (3) 7 (4) 2

Q44. Consider the above reaction sequence, the Product ‘ C’ is (1) (2) (3) (4)

Q45.Compound I is heated with Conc. HI to give a hydroxy compound A which is further heated with Zn dust to give compound B. Identify A and B. ​ (1) (2) (3) (4)

Q45.Match List-I with List-II List-I List-II JEE Main 2022 (27 Jun Shift 2) JEE Main Previous Year Paper A I Br2 in CS2 B II Na2 Cr2 O7/H2 SO4 C III Zn D IV CHCl3 / NaOH Question: Choose the correct answer from the options given below (1) A −IV, B −III, C −II, D −I (2) A −IV, B −III, C −I, D −II (3) A −II, B −III, C −I, D −IV (4) A −IV, B −II, C −III, D −I

Q45.Major product ' B' of the following reaction sequence is (1) (2) (3) (4)

Q45.Match List-I with List-II, match the gas evolved during each reaction. List-I List-II 𝛥 A I H2 ⟶ NH42Cr2O7 B KMnO4 + HCl → II N2 C Al + NaOH + H2O → III O2 Δ D IV Cl2 NaNO3 ⟶ Choose the correct answer from the options given below (1) A - II, B - III, C - I, D - IV (2) A - III, B - I, C - IV, D - II (3) A - II, B - IV, C - I, D - III (4) A - III, B - IV, C - I, D - II

Q45.The reagent, from the following, which converts benzoic acid to benzaldehyde in one step is (1) LiAlH4 (2) KMnO4 (3) MnO (4) NaBH4

Q45. The major product of the above reactions is (1) (2) (3) (4) JEE Main 2022 (24 Jun Shift 1) JEE Main Previous Year Paper

Q45. hv (C7H5O2)2 →[X] →2˙C6H5 + 2 CO2 Consider the above reaction and identify the intermediated ' X' (1) (2) (3) (4)

Q45.Transition metal complex with highest value of crystal field splitting (Δ0) will be (1) [Mo (H2O)6]3+ (2) [Cr (H2O)6]3+ (3) [Os (H2O)6]3+ (4) [Fe (H2O)6]3+

Q45.The total number of Mn = O bonds in Mn2 O7 is (1) 4 (2) 5 (3) 6 (4) 3

Q45.The metal complex that is diamagnetic is (Atomic number : Fe, 26; Cu, 29) (1) K3CuCN4 (2) K2CuCN4 (3) K3FeCN4 (4) K4FeCl6

Q45.Two isomers (A) and (B) with Molar mass 184 g/ mol and elemental compositio C, 52. 2%; H, 49% and Br 42. 9% gave benzoic acid and p− bromobenzoic acid, respectively on oxidation with KMnO4 . Isomer ′A′ is optically active and gives a pale yellow precipitate when warmed with alcoholic AgNO3 . Isomer ′A′ and ′B′ are, respectively : (1) (2) (3) (4) H3C −CHBr −C6H5 and and H3C −CHBr −C6H5

Q45.The correct order of energy of absorption for the following metal complexes is A : [Ni (en)3]2+, B : [Ni (NH3)6]2+, C : [Ni (H2O)6]2+ (1) C < B < A (2) B < C < A (3) C < A < B (4) A < C < B

Q45.The major product in the reaction JEE Main 2022 (25 Jun Shift 1) JEE Main Previous Year Paper (1) 𝑡-Butyl ethyl ether (2) 2 -Methyl pent-1-ene (3) 2, 2 -Dimethyl butane (4) 2 -Methyl prop-1-ene

Q45.The major product formed in the following reaction, is (1) (2) (3) (4)

Q45.The major product P of the given reaction is (where, Me is −CH3 ) JEE Main 2022 (28 Jun Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)

Q45.A compound ' X ' is acidic and it is soluble in NaOH solution, but insoluble in NaHCO3 solution. Compound ' X ' also gives violet colour with neutral FeCl3 solution. The compound ' X ' is (1) (2) (3) (4)

Q45.Which one of the following compounds is inactive towards SN1 reaction? (1) (2) (3) (4)

Q45.Which of the following reactions will yield benzaldehyde as a product? JEE Main 2022 (27 Jun Shift 1) JEE Main Previous Year Paper (1) B & C (2) C & D (3) A & D (4) A & C Q46.' A ' and ' B' respectively are (1)O3 −A. → Ethane- 1, 2 -dicarbaldehyde +Glyoxal/Oxaldehyde (2)Zn−H2O (1)O3 −B → 5− -oxohexanal (2)Zn−H2O (1) 1 -methylcyclohex- 1, 3 -diene & cyclopentene.(2) Cyclohex- 1, 3 -diene & cyclopentene (3) Cyclohex- 1, 3 -diene & 1 -methylcyclopent- 1 - (4) 1 -methylcyclohex- 1, 4 -diene & 1 - ene methylcyclopent- 1 -ene

Q46.Isobutyraldehyde on reaction with formaldehyde and K2 CO3 gives compound ' A '. Compound ' A' reacts with KCN and yields compound ' B ', which on hydrolysis gives a stable compound ' C '. The compound ' C ' is (1) (2) (3) (4)

Q46. Find out the major product for the above reaction. JEE Main 2022 (28 Jul Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)

Q46.Hex- 4 -ene- 2 -ol on treatment with PCC gives ' A '. ' A ' on reaction with sodium hypoiodite gives ' B ', which on further heating with soda lime gives ' C '. The compound ' C ' is (1) 2 -pentene (2) proponaldehyde (3) 2 -butene (4) 4 -methylpent- 2 -ene

Q46.Which of the following conditions or reaction sequence will NOT give acetophenone as the major product? JEE Main 2022 (25 Jun Shift 2) JEE Main Previous Year Paper (1) (a) (2) (a) (b) Na2Cr2O7, H+ (b) PCC, DCM (3) (4)