Practice Questions

Q33.The major product obtained from the following reaction is : (1) (2) (3) (4)

Q33.A crystal is made up of metal ions ′M1′ and ′M2′ and oxide ions. Oxide ions form a ccp lattice structure. The cation ′M1′ occupies 50% of octahedral voids and the cation ′M2′ occupies 12. 5 % of tetrahedral voids of oxide lattice. The oxidation numbers of ′M1′ and ′M2′ are respectively : (1) +2, + 4 (2) +1, + 3 (3) +3, + 1 (4) +4, + 2

Q33.Which of the following compounds will form the precipitate with aq. AgNO3 solution most readily? JEE Main 2020 (04 Sep Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)

Q33.Among the following compounds, geometrical isomerism is exhibited by : (1) (2) (3) (4)

Q33.A chromatography column, packed with silica gel as stationary phase, was used to separate a mixture of compounds consisting of (A) benzanilide (B) aniline and (C) acetophenone. When the column is eluted with a mixture of solvents, hexane:ethyl acetate (20 : 80) , the sequence of obtained compounds is: (1) (B), (C) and (A) (2) (B), (A) and (C) (3) (C), (A) and (B) (4) (A), (B) and (C)

Q33.The IUPAC name of the following compound is: (1) 5-Bromo-3-methylcyclopentanoic acid (2) 4-Bromo-2-methylcyclopentane carboxylic acid (3) 3-Bromo-5-methylcyclopentanoic acid (4) 3-Bromo-5-methylcyclopentanoic carboxylic acid

Q33.The reaction of H3N3B3Cl3(A) with LiBH4 in tetrahydrofuran gives inorganic benzene (B) . Further, the reaction of (A) with (C) leads to H3N3B3(Me)3 . Compounds (B) and (C) respectively, are: (1) Bogging god MeBr (2) Diborane and MeMgBr (3) Boron nitride and MeBr (4) Borazine and MeMgBr JEE Main 2020 (09 Jan Shift 2) JEE Main Previous Year Paper

Q33.A solution of m− chloroaniline, m− chlorophenol and m− chlorobenzoic acid in ethyl acetate was extracted initially with a saturated solution of NaHCO3 to give fraction A . The left over organic phase was extracted JEE Main 2020 (07 Jan Shift 1) JEE Main Previous Year Paper with dilute NaOH solution to give fraction B . The final organic layer was labelled as fraction C . Fractions A, B and C, contain respectively: (1) m− chlorobenzoic acid, m− chloroaniline and (2) m− chlorobenzoic acid, m− chlorophenol and m− chlorophenol m− chloroaniline (3) m− chlorophenol, m− chlorobenzoic acid and (4) m− chloroaniline, m− chlorobenzoic acid and m− chloroanilinc m− chlorophenol

Q33.Which of the following compounds produces an optically inactive compound on hydrogenation? (1) (2) (3) (4)

Q33.Arrange the following compounds in increasing order of C −OH bond length: methanol, phenol, p - ethoxyphenol (1) methanol < p -ethoxyphenol < phenol (2) phenol < methanol < p -ethoxyphenol (3) phenol < p -ethoxyphenol < methanol (4) methanol < phenol < p -ethoxyphenol

Q34.Consider the following plots of rate constant versus 1 for four different reactions. Which of the following T orders is correct for the activation energies of these reactions? (1) Eb > Ea > Ed > Ec (2) Ea > Ec > Ed > Eb (3) Ec > Ea > Ed > Eb (4) Eb > Ed > Ec > Ea

Q34.The major products of the following reaction are : JEE Main 2020 (06 Sep Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q34.The final major product of the following reaction is : JEE Main 2020 (05 Sep Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)

Q34.A diatomic molecule X2 has a body-centred cubic (bcc) structure with a cell edge of 300 pm. The density of the molecule is 6. 17 gcm−3. The number of molecules present in 200 g of X2 is : (Avogadro constant (NA) = 6 × 1023 mol−1 ) (1) 40 NA (2) 8 NA (3) 4 NA (4) 2 NA

Q34.A flask contains a mixture of isohexane and 3 -methylpentane. One of the liquids boils at 63oC while the other boils at 60oC. What is the best way to separate the two liquids and which one will be distilled out first? (1) fractional distillation, isohexane (2) simple distillation, 3 -methylpentane (3) simple distillation, isohexane (4) fractional distillation, 3 -methylpentane

Q34.Which of the following has the shortest C −Cl bond? (1) Cl −CH = CH2 (2) Cl −CH = CH −NO2 (3) Cl −CH = CH −CH3 (4) Cl −CH = CH −OCH3

Q34.Among the following compounds, which one has the shortest C– Cl bond? (1) (2) (3) H3C −Cl (4)

Q34.The increasing order of basicity for the following intermediates is (from weak to strong) (1) (iii) < (i) < (ii) < (iv) < (v) (2) (v) < (i) < (iv) < (ii) < (iii) (3) (v) < (iii) < (ii) < (iv) < (i) (4) (iii) < (iv) < (ii) < (i) < (v)

Q34.Two open beakers one containing a solvent and the other containing a mixture of that solvent with a non volatile solute are together sealed in a container. Over time: (1) the volume of the solution increases and the (2) the volume of the solution decreases and the volume of the solvent decreases volume of the solvent increases (3) the volume of the solution and the solvent does (4) change and the volume of the solvent decreases not change the volume of the solution does not

Q34.On heating compound (A) gives a gas (B) which is constituent of air. This gas when treated with H2 in the presence of a catalyst gives another gas (C) which is basic in nature. (A) should not be : (1) NaN3 (2) Pb (NO3)2 (3) (NH4)2 Cr2 O7 (4) NH4 NO2

Q34.The decreasing order of reactivity of the following organic molecules towards AgNO3 solution is: JEE Main 2020 (04 Sep Shift 1) JEE Main Previous Year Paper (1) (C) > (D) > (A) > (B) (2) (A) > (B) > (D) > (C) (3) (A) > (B) > (C) > (D) (4) (B) > (A) > (C) > (D)

Q34.The increasing order of pKb for the following compounds will be : (1) (B) < (C) < (A) (2) (A) < (B) < (C) (3) (C) < (A) < (B) (4) (B) < (A) < (C)

Q34. The major product of the following reaction is: JEE Main 2020 (02 Sep Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)

Q35.For the given cell; Cu(s) Cu2+(C1M) Cu2+(C2M) Cu(s) change in Gibbs energy (ΔG) is negative, it : (1) C1 = C2 (2) C2 = C1 √2 (3) C1 = 2C2 (4) C2 = √2 C1 JEE Main 2020 (06 Sep Shift 2) JEE Main Previous Year Paper

Q35.The major product of the following reaction is : (1) (2) (3) (4)