Practice Questions

Q47.The number of unpaired d-electrons in [Co(H2O)6]3+ is (1) 2 (2) 1 (3) 0 (4) 4

Q47.Identify the major product in the following reaction. (1) (2) (3) (4)

Q47.In Reimer - Tiemann reaction, phenol is converted into salicylaldehyde through an intermediate. The structure of intermediate is _____ (1) (2) (3) (4)

Q47. Identify the product (A) in the following reaction. (1) (2) (3) (4)

Q48.Identify major product ‘𝑃’ formed in the following reaction. JEE Main 2024 (31 Jan Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)

Q48.The correct statement regarding nucleophilic substitution reaction in a chiral alkyl halide is ; (1) Retention occurs in SNl reaction and inversion (2) Racemisation occurs in SNl reaction and occurs in SN2 reaction. retention occurs in SN2 reaction. (3) Racemisation occurs in both SN1 and SN2 (4) Racemisation occurs in SN1 reaction and reactions. inversion occurs in SN2 reaction.

Q48. Identify the product in the following reaction : (1) (2) (3) (4)

Q48. Identify the product (P) in the following reaction: JEE Main 2024 (08 Apr Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q48. C2H5OH−CH3 −CH2 −CH2 −Br + NaOH → Product 'A' Consider the above reactions, identify product B and product C . (1) B = 1-Propanol C = 2-Propanol (2) B = C = 2-Propanol (3) B = 2-Propanol C = 1-Propanol (4) B = C = 1-Propanol

Q48.CoNH36 3 + and CoF6 3 - are respectively known as: (1) Spin free Complex, Spin paired Complex (2) Spin paired Complex, Spin free Complex (3) Outer orbital Complex, Inner orbital Complex (4) Inner orbital Complex, Spin paired Complex

Q48. Consider the above reaction sequence and identify the major product P . (1) Methoxymethane (2) Methanoic acid (3) Methanal (4) Methane

Q48. (Test) (Identification) (A) Bayer's test MARKS (I) Phenol VIARKS Match List - I with List - II. (B) Ceric ammonium nitrate test (II) Aldehyde (C) Phthalein dye test R K (III) Alcoholic-OH group (D) Schiff's test (IV) Unsaturation Choose the correct answer from the options given below : (1) (A)-(IV), (B)-(III), (C)-(I), (D)-(II) (2) (A)-(II), (B)-(III), (C)-(IV), (D)-(I) (3) (A)-(IV), (B)-(I), (C)-(II), (D)-(III) (4) (A)-(III), (B)-(I), (C)-(IV), (D)-(II) JEE Main 2024 (08 Apr Shift 2) JEE Main Previous Year Paper

Q48.In the following sequence of reaction, the major products B and C respectively are : (1) (2) (3) (4)

Q48.Match List – I with List –II. JEE Main 2024 (01 Feb Shift 1) JEE Main Previous Year Paper Choose the correct answer from options given below: (1) A - III, B - IV, C - I, D - II (2) A - IV, B - II, C - I, D - III (3) A - IV, B - II, C - III, D - I (4) A - III, B - IV, C - II, D - I

Q48.Which of the following compounds will give silver mirror with ammoniacal silver nitrate? A. Formic acid B. Formaldehyde C. Benzaldehyde D. Acetone Choose the correct answer from the options given below : (1) A, B and C only (2) C and D only (3) B and C only (4) A only

Q48.Which among the following aldehydes is most reactive towards nucleophilic addition reactions? JEE Main 2024 (06 Apr Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q48.During the detection of acidic radical present in a salt, a student gets a pale yellow precipitate soluble with difficulty in NH4OH solution when sodium carbonate extract was first acidified with dil. HNO3 and then AgNO3 solution was added. This indicates presence of : (1) Br− (2) I− (3) Cl− (4) CO32− JEE Main 2024 (06 Apr Shift 2) JEE Main Previous Year Paper

Q48.Identify compound (Z) in the following reaction sequence. JEE Main 2024 (05 Apr Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q48.Match List-I with List-II. List I (Reaction) List II (Reagent(s)) (A) (I) Na2Cr2O7 / H2SO4 (B) (II) (i) NaOH (ii) CH3Cl (i)NaOH, CHCl3 (C) (III) (ii) NaOH (iii) HCl (i) NaOH (ii) CO2 (D) (IV) (iii) HCl Choose the correct answer from the options given below: (1) (A)-(IV), (B)-(I), (C)-(III), (D)-(II) (2) (A)-(II), (B)-(III), (C)-(I), (D)-(IV) (3) (A)-(II), (B)-(I), (C)-(III), (D)-(IV) (4) (A)-(IV), (B)-(III), (C)-(I), (D)-(II)

Q48.On passing a gas, ' X ', through Nessler's reagent, a brown precipitate is obtained. The gas ' X ' is (1) H2S (2) CO2 (3) NH3 (4) Cl2

Q49.In the precipitation of the iron group (III) in qualitative analysis, ammonium chloride is added before adding ammonium hydroxide to : (1) increase concentration of Cl− ions (2) increase concentration of NH4+ ions (3) prevent interference by phosphate ions (4) decrease concentration of −OH ions

Q49.Identify ' A ' in the following reaction: (1) (2) (3) (4)

Q49. Acid D formed in above reaction is: (1) Gluconic acid (2) Succinic acid (3) Oxalic acid (4) Malonic acid

Q49.Type of amino acids obtained by hydrolysis of proteins is : (1) β (2) α (3) δ (4) γ

Q49.Major product formed in the following reaction is a mixture of: JEE Main 2024 (27 Jan Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)