Practice Questions

Q60.Total number of relatively more stable isomer(s) possible for octahedral complex Cuen2SCN2 will be____ 1

Q60.The spin only magnetic moment of the complex present in Fehling's reagent is____ B. M. (Round off your answer to the nearest integer) 1 2 5 5) 3 3) 3 + −5(log5 = 0 then

Q60. Zymase NaOI−−C6H12O6 → A → B + CHI3 Δ The number of carbon atoms present in the product B is JEE Main 2022 (29 Jun Shift 1) JEE Main Previous Year Paper

Q60. In alanylglycylleucylalanylvaline the number of peptide linkages is:

Q60.Acidified potassium permanganate solution oxidises oxalic acid. The spin-only magnetic moment of the mangenese product formed from the above reaction is B.M.___(Nearest Integer) ¯

Q60.How many of the following drugs is/are example(s) of broad spectrum antibiotic? Ofloxacin, Penicillin G, Terpineol, Salvarsan

Q60. If the initial pressure of a gas is 0. 03 atm, the mass of the gas adsorbed per gram of the adsorbent is____ ×10−2 g

Q60.The number of oxygen present in a nucleotide formed from a base, that is present only in RNA is

Q60.Number of complexes which will exhibit synergic bonding amongst, [Cr (CO)6], [Mn (CO)5] and [Mn2 (CO)10] is

Q60.In the cobalt-carbonyl complex : [Co2 (CO)8], number of Co −Co bonds is " X" and terminal CO ligands is " Y ". X + Y =___

Q60.Among the following the number of curves not in accordance with Freundlich adsorption isotherm is |x+3|−1 ∈[−6, 3] −{−2, 2} : T = {x ∈Z : x2 −7|x| + 9 ≤0}. Then the number of

Q60.How many of the given compounds will give a positive Biuret test____? Glycine, Glycylalanine, Tripeptide, Biuret

Q60.If CuH2O4 2 + absorbs a light of wavelength 600 nm for d - d transition, then the value of octahedral crystal field splitting energy for CuH2O6 2 + will be____ × 10-21 J [Nearest integer] (Given : h = 6 . 63 × 10-34Js and c = 3 . 08 × 108 ms-1)

Q60.The difference between spin only magnetic moment values of [Co (H2O)6] Cl2 and [Cr (H2O)6] Cl3 is

Q60.The number of chlorine atoms in bithionol is 1

Q60.In the given reaction (Where Et is -C2H5) The number of chiral carbon/s in product A is

Q60.A sample of 4. 5 mg of an unknown monohydric alcohol, R −OH was added to methylmagnesium iodide. A gas is evolved and is collected and its volume measured to be 3. 1 mL. The molecular weight of the unknown alcohol is g/ mol. p is _______.

Q60.In the given reaction, The number of π electrons present in the product ′P′ is ____________.

Q61.Let O be the origin and A be the point z1 = 1 + 2i . If B is the point z2, Re (z2) < 0 , such that OAB is a right angled isosceles triangle with OB as hypotenuse, then which of the following is NOT true? (1) arg z2 = π −tan−1 3 (2) arg(z1 −2z2) = −tan−1 34 (3) |z2| = √10 (4) |2z1 −z2| = 5

Q61.Let α be a root of the equation 1 + x2 + x4 = 0. Then the value of α1011 + α2022 −α3033 is equal to: (1) 1 (2) α (3) 1 + α (4) 1 + 2α

Q61.Let the minimum value v0 of v = |z|2 + |z −3|2 + |z −6i|2 , z ∈C is attained at z = z0 . Then ¯2z20 −z30 + 3 2 + v20 is equal to (1) 1000 (2) 1024 (3) 1105 (4) 1196

Q61.Let f(x) be a quadratic polynomial such that f(−2) +f(3) = 0. If one of the roots of f(x) = 0 is −1, then the sum of the roots of f(x) = 0 is equal to (1) 11 (2) 7 3 3 (3) 12 (4) 14 3 3

Q61.Let S = {x |x|−2 ≥0} and elements in S ∩T is JEE Main 2022 (28 Jul Shift 2) JEE Main Previous Year Paper (1) 7 (2) 5 (3) 4 (4) 3

Q61.Let A = {z ∈C : z−1z+1 < 1} and B = {z ∈C : arg( z+1z−1 ) = 2π3 }. Then A ∩B is (1) a portion of a circle centred at (0, −1√3 ) that (2) a portion of a circle centred at (0, −1√3 ) that lies in the second and third quadrants only lies in the second quadrant only (3) an empty set (4) a portion of a circle of radius 2 that lies in the √3 third quadrant only

Q61.If 𝑧≠0 be a complex number such that 𝑧- 𝑧= 2, then the maximum value of 𝑧 is (1) √2 (2) 1 (3) √2 - 1 (4) √2 + 1