Back to General Organic Chemistry

Set 7 of 22 · Questions 181-210 of 650

In the print window choose “Save as PDF”. The file prints without a web address or date line.

Mere Teacher

Mere Teacher · Previous Year Questions

NEET Chemistry · General Organic Chemistry · Set 7 (Q181-210)

QR code to mereteacher.com

Scan or visit mereteacher.com for free PYQ practice, timed CBT tests, step-by-step solutions and BroBot AI. Answers and solutions are free with a sign-up.

  1. 181.
    The correct IUPAC nomenclature for the following compound is:
    1. (1)2-Methyl-5-oxohexanoic acid
    2. (2)2-Formyl-5-methylhexan-6-oic acid
    3. (3)5-Methyl-2-oxohexan-6-oic acid
    4. (4)5-Formyl-2-methylhexanoic acid
  2. 182.
    How many different stereoisomers are possible for the given molecule?
    1. (1)2
    2. (2)1
    3. (3)4
    4. (4)3
  3. 183.
    Structure of the compound whose IUPAC name is
    3‐Ethyl‐2‐hydroxy‐4‐methylhex‐3‐en‐ 5‐ynoic acid is
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  4. 184.
    Choose the correct name for compound given below:
    1. (1)(4E)-5-Bromo-hex-4-en-2-yne
    2. (2)(2E)-2-Bromo-hex-4-yn-2-ene
    3. (3)(2E)-2-Bromo-hex-2-en-4-yne
    4. (4)(4E)-5-Bromo-hex-2-en-4-yne
  5. 185.
    Consider the acidity of the carboxylic acids:
    (i) PhCOOH (ii) o-COOH
    (iii) p-COOH (iv) m-COOH
    1. (1)i > ii > iii > iv
    2. (2)ii > iii > iv > i
    3. (3)iii > ii > iv > i
    4. (4)ii > iv > iii > i
  6. 186.
    Consider the following three resonance structures

    The correct order of their stabilities is
    1. (1)II I III
    2. (2)I II III
    3. (3)III I II
    4. (4)III II I
  7. 187.
    The species that can have a trans-isomer is:
    (en =ethane – 1, 2 – diamine, Ox = oxalate)
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  8. 188.
    Nitrogen detection in an organic compound is carried out by Lassaigne’s test.
    The blue colour formed corresponds to which of the following formulae?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  9. 189.
    The IUPAC name of the compound is
    1. (1)pent‐4‐yn‐2‐ene
    2. (2)pent‐3‐en‐l‐yne
    3. (3)pent‐2‐en‐4‐yne
    4. (4)pent‐l‐yn‐3‐ene
  10. 190.
    Compound from the following that will not produce precipitate on reaction with is
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  11. 191.
    The correct statement regarding the comparison of staggered and eclipsed conformations of ethane, is:
    1. (1)The staggered conformation of ethane is more stable than eclipsed conformation, because staggered conformation has no torsional strain.
    2. (2)The staggered conformation of ethane is less stable than eclipsed conformation, because staggered conformation has torsional strain.
    3. (3)The eclipsed conformation of ethane is more stable than staggered conformation, because eclipsed conformation has no torsional strain.
    4. (4)The eclipsed conformation of ethane is more stable than staggered conformation even though the eclipsed conformation has torsional strain.
  12. 192.
    Which one of the carbocations from the following is most stable?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  13. 193.
    In Dumas method for the estimation of , the sample is heated with copper oxide and the gas evolved is passed over :
    1. (1)Ni
    2. (2)Copper gauze
    3. (3)Pd
    4. (4)Copper oxide
  14. 194.
    A pair of compounds which shows geometelat isomerism is
    1. (1)ethanol and acetone
    2. (2)n-butane and isobutene
    3. (3)dimethyl ether and ethanol
    4. (4)maleic acid and fumaric acid.
  15. 195.
    Amongst the following the most basic compound is
    1. (1)p-Nitroaniline
    2. (2)Acetanilide
    3. (3)Aniline
    4. (4)Benzylamine
  16. 196.
    The most suitable method of separation of 1 : 1 mixture of ortho and
    para‐nitrophenols is
    1. (1)chromatography
    2. (2)crystallisation
    3. (3)steam distillation
    4. (4)sublimation.
  17. 197.
    CH3Br + Nu– CH3 – Nu + Br–
    The decreasing order of the rate of the above reaction with nucleophiles (Nu¯) A to D is :
    1. (1)D > C > B > A
    2. (2)A > B > C > D
    3. (3)B > D > C > A
    4. (4)D > C > A > B
  18. 198.
    Relative stability of the contributing structures is :
    1. (1)(I) (II) (III)
    2. (2)(I) (III) (II)
    3. (3)(II) (I) (III)
    4. (4)(III) (II) (I)
  19. 199.
    Among the following compounds the one that is most reactive towards
    electrophilic nitration is
    1. (1)benzoic acid
    2. (2)nitrobenzene
    3. (3)toluene
    4. (4)benzene
  20. 200.
    Consider the reaction :
    CH3CH2CH2Br + NaCN CH3CH2CH2CN + NaBr
    This reaction will be the fastest in :
    1. (1)water
    2. (2)ethanol
    3. (3)methanol
    4. (4)N,N’-dimethylformamide (DMF)
  21. 201.
    Which of the following is metamer of the given compound ?
    1. (1) (N-cyclohexylbenzamide)
    2. (2) (N-phenylbenzamide)
    3. (3) (N-cyclohexylcyclohexanecarboxamide)
    4. (4)
  22. 202.
    In Carius method, halogen containing organic compound is heated with fuming nitric acid in the presence of :
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  23. 203.
    Reaction of one molecule of HBr with one molecule of 1, 3-butadiene at 40°C gives predominantly
    1. (1)3-bromobutene under kinetically controlled conditions
    2. (2)1-bromo-2-butene under thermodynamically controlled conditions
    3. (3)3-bromobutene under thermodynamically controlled conditions.
    4. (4)1-bromo-2-butene under kinetically controlled conditions.
  24. 204.
    Which one of the nitrogen atoms in is the most nucleophilic?
    1. (1)III
    2. (2)I
    3. (3)II
    4. (4)All three nitrogen atoms are equally strong nucleophilic centers.
  25. 205.
    Match List I with List II

    Choose the correct answer from the options given below :
    1. (1)(A)-(II), (B)-(I), (C)-(IV), (D)-(III)
    2. (2)(A)-(III), (B)-(I), (C)-(II), (D)-(IV)
    3. (3)(A)-(I), (B)-(III), (C)-(IV), (D)-(II)
    4. (4)(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
  26. 206.
    Maximum dehydration takes place that of :
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  27. 207.
    The major product formed in the following reaction is :
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  28. 208.
    The IUPAC name of the following compound is :
    1. (1)4-Bromo-3-cyanophenol
    2. (2)2-Bromo-5-hydroxybenzonitrile
    3. (3)2-Cyano-4-hydroxybromobenzene
    4. (4)6-Bromo-3-hydroxybenzonitrile
  29. 209.
    In the following skew conformation of ethane, dihedral angle is:
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  30. 210.
    Considering the state of hybridization of carbon atoms, find out the molecule among the following which is linear?
    1. (1)CH3–CH=CH–CH3
    2. (2)CH3–C≡C–CH3
    3. (3)CH2=CH–CH2–C≡CH
    4. (4)CH3–CH2–CH2–CH3