Practice Questions

Q58.Given below are two statements: Statement I: Morphine is a narcotic analgesic. It helps in relieving pain without producing sleep. Statement II: Morphine and its derivatives are obtained from opium poppy. In the light of the above statements, choose the correct answer from the options given below (1) Both Statement I and Statement II are true (2) Statement I is true but Statement II is false (3) Both Statement I and Statement II are false (4) Statement I is false but Statement II is true

Q58.The variation of the rate of an enzyme catalyzed reaction with substrate concentration is correctly represented by graph JEE Main 2023 (25 Jan Shift 1) JEE Main Previous Year Paper (a) (b) (c) JEE Main 2023 (25 Jan Shift 1) JEE Main Previous Year Paper (d) (1) b (2) c (3) d (4) a

Q58.Correct statement is : (1) An average human being consumes more food (2) An average human being consumes nearly 15 than air times more air than food (3) An average human being consumes equal amount (4) An average human being consumes 100 times of food and air more air than food

Q58.Among the following, the number of tranquilizer/s is/are A. Chloroliazepoxide B. Veronal C. Valium D. Salvarsan

Q59.The oxidation sate of phosphorus in hypophosphoric acid is

Q59.Match List I with List II List I List II Antimicrobials Names (A) Narrow Spectrum (I) Furacin Antibiotic (B) Antiseptic (II) Sulphur dioxide (C) Disinfectants (III) Penicillin-G (D) Broad spectrum antibiotic (IV) Chloramphenicol (1) (A) - III, (B) - I, (C) - II, (D) - IV (2) (A) - I, (B) - II, (C) - IV, (D) - III (3) (A) - II, (B) - I, (C) - IV, (D) - III (4) (A) - III, (B) - I, (C) - IV, (D) - II JEE Main 2023 (29 Jan Shift 1) JEE Main Previous Year Paper

Q59.Match List I with List II List I (Name of polymer) List II (Uses) A Glyptal I Flexible pipes B Neoprene II Synthetic wool C Acrilan III Paints and Lacquers D LDP IV Gaskets Choose the correct answer from the options given below :- (1) A −III, B −II, C −IV, D −I (2) A −III, B −IV, C −II, D −I (3) A −III, B −IV, C −I, D −II (4) A −III, B −I, C −IV, D −II

Q59.Match List I with List II : List I List II A. Saccharin I. High potency sweetener B. Aspartame II. First artificial sweetening agent C Alitame III. Stable at cooking temperature D. Sucralose IV. Unstable at cooking temperature Choose the correct answer from the options given below : JEE Main 2023 (08 Apr Shift 1) JEE Main Previous Year Paper (1) A-IV, B-III, C-I, D-II (2) A-II, B-III, C-IV, D-I (3) A-II, B-IV, C-III, D-I (4) A-II, B-IV, C-I, D-III

Q59.Sum of oxidation states of bromine in bromic acid and perbromic acid is JEE Main 2023 (01 Feb Shift 1) JEE Main Previous Year Paper

Q59.A doctor prescribed the drug Equanil to a patient. The patient was likely to have symptoms of which disease? (1) Stomach ulcers (2) Hyperacidity (3) Anxiety and stress (4) Depression and hypertension

Q60.Match List I with List II List II List I One Letter Natural amino acid Code (A) Glutamic acid (I) Q (B) Glutamine (II) W (C) Tyrosine (III) E JEE Main 2023 (08 Apr Shift 2) JEE Main Previous Year Paper (D) Tryptophan (IV) Y Choose the correct answer from the options given below: (1) (A)-III, B-IV, (C)-I, (D)-II (2) (A)-IV, B-III, (C)-I, (D)-II (3) (A)-III, B-I, (C)-IV, (D)-II (4) (A)-II, B-I, (C)-IV, (D)-III

Q60.Number of ambidentate ligands in a representative metal complex M ( en ) ( SCN ) is _________ . [en = 4 ethylenediamine]

Q60.Sulphur (S) containing amino acids from the following are: (a) isoleucine (b) cysteine (c) lysine (d) methionine (e) glutamic acid (1) b, c, e (2) a, b, c (3) b, d (4) a, d

Q60.Match List-I with List-II. List-I List-II Natural Amino One Letter acid Code (A) Arginine (I) D (B) Aspartic acid (II) N (C) Asparagine (III) A (D) Alanine (IV) R Choose the correct answer from the options given below: JEE Main 2023 (06 Apr Shift 2) JEE Main Previous Year Paper (1) (A)–IV, B–I, (C)–II, (D)–III (2) (A)–I, B–III, (C)–IV, (D)–II (3) (A)–III, B–I, (C)–II, (D)–IV (4) (A)–IV, B–I, (C)–III, (D)–II

Q60.The homoleptic and octahedral complex of Co2+ and H2O has ______ unpaired electron(s) in the t2g set of orbitals.

Q60.A ( g ) →2 B ( g ) + C ( g ) is a first order reaction. The initial pressure of the system was found to be 800 mm Hg which increased to 1600 mm Hg after 10 min. The total pressure of the system after 30 min will be mm Hg. (Nearest integer)

Q60.A trisubstituted compound 'A', C10H12O2 gives neutral FeCl3 test positive. Treatment of compound 'A' with NaOH and CH3Br gives C11H14O2, with hydroiodic acid gives methyl iodide and with hot conc. NaOH gives a compound B, C10H12O2. Compound 'A' also decolorises alkaline KMnO4. The number of 𝜋 bond/s present in the compound 'A' is _____ .

Q61.If the value of real number α > 0 for which x2 −5αx + 1 = 0 and x2 −αx −5 = 0 have a common real roots is 3 then β is equal to ________ √2β

Q31.Element " E" belongs to the period 4 and group 16 of the periodic table. The valence shell electron configuration of the element, which is just above " E" in the group is (1) 2s22p4 (2) 3d10, 4s2, 4p4 (3) 3s23p4 (4) 4d10, 5s2, 5p4

Q31.The correct order of ionic size of N3−, Na+, F−, Mg2+ and O2− is : (1) Mg2+ < Na+ < F−< O2−< N3− (2) N3−< O2−< F < Na+ < Mg2+ (3) F−< Na+ < O2−< Mg2+ < N3− (4) Na+ < F−< Mg2+ < O2−< N3−

Q31.Using the rules for significant figures, the correct answer for the expression 0.02858×0.112 will be: 0.5702 (1) 0. 005613 (2) 0. 00561 (3) 0. 0056 (4) 0. 006

Q31.The number of radial and angular nodes in 4 d orbital are, respectively (1) 1 & 2 (2) 3 & 2 (3) 1 & 0 (4) 2 & 1

Q31.Consider the reaction 4HNO3l + 3KCls →Cl2g + NOClg + 2H2Og + 3KNO3s The amount of HNO3 required to produce110 . 0 g of KNO3 is (Given : Atomic masses of H, O, N and K are 1, 16, 14 and 39, respectively.) (1) 32 . 2 g (2) 69 . 4 g (3) 91 . 5 g (4) 162 . 5 g

Q31.The correct decreasing order of energy, for the orbitals having, following set of quantum numbers: (A) n = 3, 1 = 0, m = 0 (B) n = 4, l = 0, m = 0 (C) n = 3, l = 1, m = 0 (D) n = 3, 1 = 2, m = 1 (1) (D) > (B) > (C) > (A) (2) (B) > (D) > (C) > (A) (3) (C) > (B) > (D) > (A) (4) (B) > (C) > (D) > (A)

Q31.Identify the incorrect statement from the following. (1) A circular path around the nucleus in which an (2) An orbital is the one electron wave function electron moves is proposed as Bohr's orbit. (3) The existence of Bohr's orbits is supported by (4) Atomic orbital is characterised by the quantum hydrogen spectrum. numbers n and l only