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Page 1 JEE Solved Example on Amines JEE Mains Q1: When aniline is treated with fuming sulphuric acid at ?????? ?? , it gives (A) Sulphanilic acid (B) Aniline sulphate (C) o-aminobenzenesulphonic acid (D) m-aminobenzenesulphonic acid Ans: (A) Q2: Examine the following two structures for the anilinium ion and choose the correct statement from the ones given below. (A) II is not an acceptable canonical structure, because carbonium ions are less stable than ammonium ions (B) II is not an acceptable canonical structure, because it is non aromatic (C) II is not an acceptable canonical structure, because the nitrogen has 10 valence electrons (D) II is an acceptable canonical structure. Ans: (C) Nitrogen can’t form 5 bonds Page 2 JEE Solved Example on Amines JEE Mains Q1: When aniline is treated with fuming sulphuric acid at ?????? ?? , it gives (A) Sulphanilic acid (B) Aniline sulphate (C) o-aminobenzenesulphonic acid (D) m-aminobenzenesulphonic acid Ans: (A) Q2: Examine the following two structures for the anilinium ion and choose the correct statement from the ones given below. (A) II is not an acceptable canonical structure, because carbonium ions are less stable than ammonium ions (B) II is not an acceptable canonical structure, because it is non aromatic (C) II is not an acceptable canonical structure, because the nitrogen has 10 valence electrons (D) II is an acceptable canonical structure. Ans: (C) Nitrogen can’t form 5 bonds Q3: The correct order of basic strength in ?????? ?? (1) ???? ?? (2) ?????? ?? (3) ?? ?? ???? (4) ?? ?? ?? where ?? is ???? ?? group is (A) ?? > ?? > ?? > ?? (B) ?? > ?? > ?? > ?? (C) ?? > ?? > ?? > ?? (D) None of these Ans: (D) Order of basic strength 4 > 3 > 2 > 1 Basic strength ? +I effect Q4: Place the following in the decreasing order of basicity. (1) Ethylamine (2) 2-aminoethanol (3) 3-aminopropan-1-ol (A) ?? > ?? > ?? (B) ?? > ?? > ?? (C) ?? > ?? > ?? (D) None of these Ans: (B) 1 > 2 > 3 Q5: Which of the following will give a positive carbylamine test? (A) ?? ?? ?????? ?? (B) ?? ?? ?? - ???? - ???? ?? (C) (???? ?? ) ?? ?? (D) ?? ?? ?? ?? ???? ?? Ans: (D) Primary amines gives carbylamine test. Q6: Isopropylamine can be obtained by (A) (???? ?? ) ?? ?????? + +???? ?? ???? ? ? ?????????? ?? ? (B) (???? ?? ) ?? ?????? +???? ?? ? ? ? (C) ???????? + ???? ?? ? (D) All of these Ans: (C) End product has a hydrophobic and a hydrophilic part. Page 3 JEE Solved Example on Amines JEE Mains Q1: When aniline is treated with fuming sulphuric acid at ?????? ?? , it gives (A) Sulphanilic acid (B) Aniline sulphate (C) o-aminobenzenesulphonic acid (D) m-aminobenzenesulphonic acid Ans: (A) Q2: Examine the following two structures for the anilinium ion and choose the correct statement from the ones given below. (A) II is not an acceptable canonical structure, because carbonium ions are less stable than ammonium ions (B) II is not an acceptable canonical structure, because it is non aromatic (C) II is not an acceptable canonical structure, because the nitrogen has 10 valence electrons (D) II is an acceptable canonical structure. Ans: (C) Nitrogen can’t form 5 bonds Q3: The correct order of basic strength in ?????? ?? (1) ???? ?? (2) ?????? ?? (3) ?? ?? ???? (4) ?? ?? ?? where ?? is ???? ?? group is (A) ?? > ?? > ?? > ?? (B) ?? > ?? > ?? > ?? (C) ?? > ?? > ?? > ?? (D) None of these Ans: (D) Order of basic strength 4 > 3 > 2 > 1 Basic strength ? +I effect Q4: Place the following in the decreasing order of basicity. (1) Ethylamine (2) 2-aminoethanol (3) 3-aminopropan-1-ol (A) ?? > ?? > ?? (B) ?? > ?? > ?? (C) ?? > ?? > ?? (D) None of these Ans: (B) 1 > 2 > 3 Q5: Which of the following will give a positive carbylamine test? (A) ?? ?? ?????? ?? (B) ?? ?? ?? - ???? - ???? ?? (C) (???? ?? ) ?? ?? (D) ?? ?? ?? ?? ???? ?? Ans: (D) Primary amines gives carbylamine test. Q6: Isopropylamine can be obtained by (A) (???? ?? ) ?? ?????? + +???? ?? ???? ? ? ?????????? ?? ? (B) (???? ?? ) ?? ?????? +???? ?? ? ? ? (C) ???????? + ???? ?? ? (D) All of these Ans: (C) End product has a hydrophobic and a hydrophilic part. Q7: The basic strength of amines (ethyl) and ammonia in ?? ?? ?? is (A) ???? ?? > ?? > ?? > ?? (B) ?? > ?? > ?? > ???? ?? (C) ?? > ?? > ?? > ???? ?? (D) None of these Ans: (D) ?? > ?? > ?? > NH 3 Q8: Which of the following will have highest Kb value? Ans: (A) Page 4 JEE Solved Example on Amines JEE Mains Q1: When aniline is treated with fuming sulphuric acid at ?????? ?? , it gives (A) Sulphanilic acid (B) Aniline sulphate (C) o-aminobenzenesulphonic acid (D) m-aminobenzenesulphonic acid Ans: (A) Q2: Examine the following two structures for the anilinium ion and choose the correct statement from the ones given below. (A) II is not an acceptable canonical structure, because carbonium ions are less stable than ammonium ions (B) II is not an acceptable canonical structure, because it is non aromatic (C) II is not an acceptable canonical structure, because the nitrogen has 10 valence electrons (D) II is an acceptable canonical structure. Ans: (C) Nitrogen can’t form 5 bonds Q3: The correct order of basic strength in ?????? ?? (1) ???? ?? (2) ?????? ?? (3) ?? ?? ???? (4) ?? ?? ?? where ?? is ???? ?? group is (A) ?? > ?? > ?? > ?? (B) ?? > ?? > ?? > ?? (C) ?? > ?? > ?? > ?? (D) None of these Ans: (D) Order of basic strength 4 > 3 > 2 > 1 Basic strength ? +I effect Q4: Place the following in the decreasing order of basicity. (1) Ethylamine (2) 2-aminoethanol (3) 3-aminopropan-1-ol (A) ?? > ?? > ?? (B) ?? > ?? > ?? (C) ?? > ?? > ?? (D) None of these Ans: (B) 1 > 2 > 3 Q5: Which of the following will give a positive carbylamine test? (A) ?? ?? ?????? ?? (B) ?? ?? ?? - ???? - ???? ?? (C) (???? ?? ) ?? ?? (D) ?? ?? ?? ?? ???? ?? Ans: (D) Primary amines gives carbylamine test. Q6: Isopropylamine can be obtained by (A) (???? ?? ) ?? ?????? + +???? ?? ???? ? ? ?????????? ?? ? (B) (???? ?? ) ?? ?????? +???? ?? ? ? ? (C) ???????? + ???? ?? ? (D) All of these Ans: (C) End product has a hydrophobic and a hydrophilic part. Q7: The basic strength of amines (ethyl) and ammonia in ?? ?? ?? is (A) ???? ?? > ?? > ?? > ?? (B) ?? > ?? > ?? > ???? ?? (C) ?? > ?? > ?? > ???? ?? (D) None of these Ans: (D) ?? > ?? > ?? > NH 3 Q8: Which of the following will have highest Kb value? Ans: (A) Q9: The product not obtained in the following reaction, ???? ?? - ???? ?? + ???? ?? + ???????? ? is (A) ???????? ?? ???? ?? (B) ???? ?? ???????? ?? (C) ???? ?? ?????? ?? (D) ???? ?? ???? ?? Ans: (D) Q10: A sequential reaction may be performed as represented below: Ans: (B) Page 5 JEE Solved Example on Amines JEE Mains Q1: When aniline is treated with fuming sulphuric acid at ?????? ?? , it gives (A) Sulphanilic acid (B) Aniline sulphate (C) o-aminobenzenesulphonic acid (D) m-aminobenzenesulphonic acid Ans: (A) Q2: Examine the following two structures for the anilinium ion and choose the correct statement from the ones given below. (A) II is not an acceptable canonical structure, because carbonium ions are less stable than ammonium ions (B) II is not an acceptable canonical structure, because it is non aromatic (C) II is not an acceptable canonical structure, because the nitrogen has 10 valence electrons (D) II is an acceptable canonical structure. Ans: (C) Nitrogen can’t form 5 bonds Q3: The correct order of basic strength in ?????? ?? (1) ???? ?? (2) ?????? ?? (3) ?? ?? ???? (4) ?? ?? ?? where ?? is ???? ?? group is (A) ?? > ?? > ?? > ?? (B) ?? > ?? > ?? > ?? (C) ?? > ?? > ?? > ?? (D) None of these Ans: (D) Order of basic strength 4 > 3 > 2 > 1 Basic strength ? +I effect Q4: Place the following in the decreasing order of basicity. (1) Ethylamine (2) 2-aminoethanol (3) 3-aminopropan-1-ol (A) ?? > ?? > ?? (B) ?? > ?? > ?? (C) ?? > ?? > ?? (D) None of these Ans: (B) 1 > 2 > 3 Q5: Which of the following will give a positive carbylamine test? (A) ?? ?? ?????? ?? (B) ?? ?? ?? - ???? - ???? ?? (C) (???? ?? ) ?? ?? (D) ?? ?? ?? ?? ???? ?? Ans: (D) Primary amines gives carbylamine test. Q6: Isopropylamine can be obtained by (A) (???? ?? ) ?? ?????? + +???? ?? ???? ? ? ?????????? ?? ? (B) (???? ?? ) ?? ?????? +???? ?? ? ? ? (C) ???????? + ???? ?? ? (D) All of these Ans: (C) End product has a hydrophobic and a hydrophilic part. Q7: The basic strength of amines (ethyl) and ammonia in ?? ?? ?? is (A) ???? ?? > ?? > ?? > ?? (B) ?? > ?? > ?? > ???? ?? (C) ?? > ?? > ?? > ???? ?? (D) None of these Ans: (D) ?? > ?? > ?? > NH 3 Q8: Which of the following will have highest Kb value? Ans: (A) Q9: The product not obtained in the following reaction, ???? ?? - ???? ?? + ???? ?? + ???????? ? is (A) ???????? ?? ???? ?? (B) ???? ?? ???????? ?? (C) ???? ?? ?????? ?? (D) ???? ?? ???? ?? Ans: (D) Q10: A sequential reaction may be performed as represented below: Ans: (B) Q11: Which of the following amine form N-nitroso derivative when treated with NaNO2 and HCl? Ans: (D) Q12: The strongest base among the following is Ans: (A)Read More
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