Practice Questions
7,135 questions across 23 years of JEE Main — find and practise any topic!
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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.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
Q49.Identify ' A ' in the following reaction: (1) (2) (3) (4)
Q49. Identify major product " X " formed in the following reaction : (1) (2) (3) (4)
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)
Q49.m-chlorobenzaldehyde on treatment with 50%KOH solution yields (1) (2) (3) (4)
Q49.The compound that is white in color is (1) ammonium sulphide (2) lead sulphate (3) lead iodide (4) ammonium arsinomolybdate
Q49.The azo-dye 𝑌 formed in the following reactions is Sulphanilic acid + NaNO2 + CH3COOH →X (1) (2) (3) (4)
Q49.Find out the major product formed from the following reaction. [Me : −CH3] (1) (2) (3) (4)
Q49. Major product of the following reaction is JEE Main 2024 (09 Apr Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)
Q49. List - I List - II (Precipitating reagent and conditions) (Cation) A. NH4Cl + NH4OH/ARKS I. Mn2+ Match List I with List II Choose the B. NH4OH + Na2CO3 II. Pb2+ C. NH4OH + NH4Cl + H2 S gas III. Al3+ D. dilute HCl IV. Sr2+ correct answer from the options given below: (1) A-III, B-IV, C-I, D-II (2) A-III, B-IV, C-II, D-I (3) A-IV, B-III, C-II, D-I (4) A-IV, B-III, C-I, D-II
Q49. List-I List-II (Name of the test) (Reaction sequence involved) [M is metal] Co(NO3)2 −A. Borax bead test I. MCO3 →MO → CoO ⋅MO Charcoal Match List I with List II B. II. MCO3 →MCl2 →M2+ cavity test Cobalt nitrate Na2 B4O7 −C III MSO4 → M(BO2)2 →MBO2 →M test Δ Na2CO3 −D. Flame test IV MSO4 → MCO3 →MO →M Δ Choose the correct answer from the options given below: (1) A-III, B-II, C-IV, D-I (2) A-III, B-IV, C-I, D-II (3) A-III, B-I, C-II, D-IV (4) A-III, B-I, C-IV, D-II
Q49.The Lassiagne's extract is boiled with dil HNO3 before testing for halogens because, (1) AgCN is soluble in HNO3 (2) Silver halides are soluble in HNO3 (3) Ag2 S is soluble in HNO3 (4) Na2 S and NaCN are decomposed by HNO3
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. List - I List - II Reaction Type of redox reaction (A) Li (I) 589.2 Match List - I with List - II. Choose the correct answer from the options (B) Na (II) 455.5 (C) Rb (III) 670.8 (D) Cs (IV) 780.0 given below : (1) (A)-(II), (B)-(IV), (C)-(III), (D)-(I) (2) (A)-(I), (B)-(IV), (C)-(III), (D)-(II) (3) (A)-(IV), (B)-(II), (C)-(I), (D)-(III) (4) (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
Q50.The products A and B formed in the following reaction scheme are respectively JEE Main 2024 (30 Jan Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)
Q50.The incorrect statement about Glucose is : (1) Glucose is soluble in water because of having (2) Glucose remains in multiple isomeric form in its aldehyde functional group aqueous solution (3) Glucose is one of the monomer unit in sucrose (4) Glucose is an aldohexose
Q50. The incorrect statement regarding the given structure is (1) can be oxidized to a dicarboxylic acid with Br2 (2) will coexist in equilibrium with 2 other cyclic water structure (3) despite the presence of - CHO does not give (4) has 4 asymmetric carbon atom Schiff's test JEE Main 2024 (08 Apr Shift 1) JEE Main Previous Year Paper
Q50. List - I List - II A. α - Glucose and α - Galactose I. Functional isomers Match List I with List II B. α - Glucose and β - Glucose II. Homologous Choose the C. α - Glucose and α - Fructose III. Anomers D. α - Glucose and α - Ribose IV. Epimers correct answer from the options given below: (1) A-IV, B-III, C-I, D-II (2) A-III, B-IV, C-I, D-II (3) A-IV, B-III, C-II, D-I (4) A-III, B-IV, C-II, D-I
Q50.DNA molecule contains 4 bases whose structure are shown below. One of the structures is not correct, identify the incorrect base structure. (1) (2) (3) (4)
Q50.Which of the following is the correct structure of L-Glucose? (1) (2) (3) (4)
Q50. What is the structure of C JEE Main 2024 (09 Apr Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)
Q50. Match List I with List II Choose the correct answer from the options given below :- (1) A-II, B-I, C-III, D-IV (2) A-IV, B-II, C-I, D-III (3) A-I, B-III, C-IV, D-II (4) A-II, B-III, C-I, D-IV
Q50.Match List I with List II List-I List-II A. Glucose/NaHCO3 / ∆ I. Gluconic acid B. Glucose/HNO3 II. No reaction JEE Main 2024 (31 Jan Shift 1) JEE Main Previous Year Paper C. Glucose/HI / ∆ III. n-hexane D. Glucose/Bromine water IV. Saccharic acid Choose the correct answer from the options given below: (1) A-IV, B-I, C-III, D-II (2) A-II, B-IV, C-III, D-I (3) A-III, B-II, C-I, D-IV (4) A-I, B-IV, C-III, D-II
Q50.Match List I with List I List I (Substances) List II (Element Present) A. Ziegler catalyst I. Rhodium B. Blood Pigment II. Cobalt C. Wilkinson catalyst III. Iron D. Vitamin B12 IV. Titanium Choose the correct answer from the options given below: (1) A-II, B-IV, C-I, D-III (2) A-II, B-III, C-IV, D-I (3) A-III, B-II, C-IV, D-I (4) A-IV, B-III, C-I, D-II