Practice Questions

Q45.What is the major product "P" of the following reaction ? (1) (2) (3) (4)

Q45.What is A in the following reaction? (1) (2) (3) (4)

Q45.What is the final product (major) 'A' in the given reaction? Major product among the following is? JEE Main 2021 (24 Feb Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q45.Ammonolysis of Alkyl halides followed by the treatment with NaOH solution can be used to prepare primary, secondary and tertiary amines. The purpose of NaOH in the reaction is. (1) to remove basic impurities (2) to activate NH3 used in the reaction (3) to remove acidic impurities (4) to increase the reactivity of alkyl halide.

Q45.Given below are two statements, one is labelled as Assertion (A) and other is labelled as Reason (R). Assertion (R) : Gabriel phthalimide synthesis cannot be used to prepare aromatic primary amines. Reason : Aryl halides do not undergo nucleophilic substitution reaction. In the light of the above statements, choose the correct answer from the options given below: (1) Both (A) and (R) true but (R) is not the correct (2) (A) is false but ( R) is true. explanation of (A). (3) Both (A) and (R) true and (R) is correct (4) (A) is true but (R) is false. explanation of (A).

Q45.Match List −I with List −II : JEE Main 2021 (18 Mar Shift 1) JEE Main Previous Year Paper List −I List −II (Chemicals) (Use / Preparation / Constituent) (a) Alcoholic potassium hydroxide (i) Electrodes in batteries (b) Pd / BaSO4 (ii) Obtained by addition reaction (c) BHC (Benzene hexachloride) (iii) Used for β−elimination reaction (d) Polyacetylene (iv) Lindlar's catalyst Choose the most appropriate match (1) a −ii, b −i, c −iv, d −iii (2) a −iii, b −iv, c −ii, d −i (3) a −iii, b −i, c −iv, d −ii (4) a −ii, b −iv, c −i, d −iii

Q45. The above reaction requires which of the following reaction conditions? (1) 573 K, Cu, 300 atm (2) 623 K, Cu, 300 atm (3) 573 K, 300 atm (4) 623 K, 300 atm

Q45.In the given reaction 3−Bromo −2, 2−dimethyl butane → ′A′ Product A is: (Major Product) (1) 2−Ethoxy −3, 3−dimethyl butane (2) 1−Ethoxy −3, 3 −dimethyl butane (3) 2−Ethoxy −2, 3−dimethyl butane (4) 2−Hydroxy −3, 3−dimethyl butane JEE Main 2021 (20 Jul Shift 1) JEE Main Previous Year Paper

Q45.Experimentally reducing a functional group cannot be done by which one of the following reagents ? (1) Zn / H2O (2) Pt - C / H2 (3) Pd - C / H2 (4) Na / H2

Q45.The correct order of reactivity of the given chlorides with acetate in acetic acid is : (1) (2) (3) (4) JEE Main 2021 (31 Aug Shift 1) JEE Main Previous Year Paper

Q45.The number of geometrical isomers found in the metal complexes [PtCl2 (NH3)2], [Ni(CO)4], [Ru (H2O)3 Cl3] and [CoCl2 (NH3)4]+ respectively, are: (1) 1, 1, 1, 1 (2) 2, 0, 2, 2 (3) 2, 1, 2, 2 (4) 2, 1, 2, 1

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

Q45.Match List-I with List-II : List-I List-II a [Co (NH3)6][Cr(CN)6] i Linkage isomerism b [Co (NH3)3(NO2)3] ii Solvate isomerism c [Cr (H2O)6] Cl3 iii Co-ordination isomerism d cis −[CrCl2(ox)2]3− iv Optical isomerism Choose the correct answer from the options given below: (1) (a) −(iii), (b) −(i), (c) −(ii), (d) −(iv) (2) (a )-( iv ) , (b) −(ii), (c) −(iii), (d) −(i) (3) (a )-( ii ), ( b )-( i ), ( c )-( iii ), ( d )-( iv) (4) (a) −(i), (b) −(ii), (c) −(iii), (d) −(iv)

Q45.For the given reaction: What is A ? (1) (2) (3) (4)

Q45.The set having ions which are coloured and paramagnetic both is - (1) Cu2+, Cr3+, Sc+ (2) Cu2+, Zn2+, Mn4+ (3) Sc3+, V5+, Ti4+ (4) Ni2+, Mn7+, Hg2+

Q45.The major product of the following reaction is : (1) (2) (3) (4)

Q46. Consider the above reaction, the product X and Y respectively are : (1) (2) (3) (4)

Q46.The hybridization and magnetic nature of [Mn (CN)6]4− and [Fe (CN)6]3−, respectively are : (1) sp3 d2 and diamagnetic (2) d2 sp3 and paramagnetic (3) sp3 d2 and paramagnetic (4) d2 sp3 and diamagnetic

Q46. Maleic anhydride Maleic anhydride can be prepared by : (1) Heating trans-but-2-enedioic acıd (2) Heating cis-but-2-enedioic acid (3) Treating cis-but-2-enedioic acid with alcohol and (4) Treating trans-but-2-enedioic acid with alcohol acid and acid JEE Main 2021 (25 Jul Shift 2) JEE Main Previous Year Paper

Q46.Which of the following reagent is used for the following reaction? ? CH3CH2CH3 →CH3CH2CHO (1) Copper at high temperature and pressure (2) Manganese acetate (3) Molybdenum oxide (4) Potassium permanganate

Q46.Given below are two statements : Statement I : The process of producing syn-gas is called gasification of coal. Statement II : The composition of syn-gas is CO + CO2 + H2(1 : 1 : 1). In the light of the above statements, choose the most appropriate answer from the options given below : (1) Both Statement I and Statement II are false. (2) Statement I is true but Statement II is false (3) Statement I is false but Statement II is true. (4) Both Statement I and Statement II are true.

Q46.Which of the following compounds will provide a tertiary alcohol on reaction with excess of CH3 MgBr followed by hydrolysis ? JEE Main 2021 (22 Jul Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q46. The correct order of their reactivity towards hydrolysis at room temperature is: (1) (A) > (B) > (C) > (D) (2) (D) > (A) > (B) > (C) (3) (D) > (B) > (A) > (C) (4) (A) > (C) > (B) > (D)

Q46.Given below are two statements : Statement I : The nucleophilic addition of sodium hydrogen sulphite to an aldehyde or a ketone involves proton transfer to form a stable ion. Statement II : The nucleophilic addition of hydrogen cyanide to an aldehyde or a ketone yields amine as final product. In the light of the above statements, choose the most appropriate answer from the options given below : (1) Both Statement I and Statement II are false. (2) Both Statement I and Statement II are true. (3) Statement I is false but Statement II is true. (4) Statement I is true but Statement II is false.

Q46. The product " P" in the above reaction is : (1) (2) (3) (4)