NEET Chemistry Organic Chemistry: Some Basic Principles & Techniques / कार्बनिक रसायन : कुछ मूलभूत सिद्धांत एवं तकन Question Bank

done Self Evaluation Test - Organic Chemistry - Some Basic Principles & Techniques Total Questions - 70

• question_answer1)
  The correct statement about the compounds A, B, and C
  A)
  A and B are identical done clear
  B)
  A and B are diastereomers done clear
  C)
  A and C are enantiomers done clear
  D)
  A and B are enantiomers done clear
  View Solution play_arrow

• question_answer2)
  \[{{C}_{6}}{{H}_{5}}CHO+HCN\xrightarrow{{}}{{C}_{6}}{{H}_{5}}-\underset{H}{\overset{H}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,-CN\] The product would be 
  A)
  a racemate done clear
  B)
  optically active done clear
  C)
  a meso compound done clear
  D)
  a mixture of diastereomers done clear
  View Solution play_arrow

• question_answer3)
  Arrange the following (w, x, y, z) in decreasing order of their boiling points:
  A)
  \[w>x>z>y\]                 done clear
  B)
  \[w>x>y>z\] done clear
  C)
  \[w>z>y>x\]                 done clear
  D)
  \[w>z>x>y\] done clear
  View Solution play_arrow

• question_answer4)
  How many degrees of unsaturation are there in the following compound?
  A)
  6                                  done clear
  B)
  7          done clear
  C)
  10                                 done clear
  D)
  11 done clear
  View Solution play_arrow

• question_answer5)
  Arrange in the order of increasing acidity.
  A)
  \[III<I<II\]        done clear
  B)
  \[I<III<II\] done clear
  C)
  \[III<II<I\]        done clear
  D)
  \[II<I<III\] done clear
  View Solution play_arrow

• question_answer6)
  Which of the following is optically active?
  A)
  \[C{{H}_{3}}-\underset{OH}{\overset{H}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,-\underset{OH}{\overset{H}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,-{{C}_{2}}{{H}_{5}}\] done clear
  B)
  \[C{{H}_{3}}-CH(OH)-C{{H}_{3}}\] done clear
  C)
  \[C{{H}_{3}}-\underset{O}{\mathop{\underset{\parallel }{\mathop{C}}\,}}\,-\underset{Br}{\overset{Br}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,-COOH\] done clear
  D)
  \[C{{H}_{3}}-C{{H}_{2}}-\overset{O}{\mathop{\overset{\parallel }{\mathop{C}}\,}}\,-C{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer7)
  Keto-enol tautomerism is observed in:
  A)
  \[{{H}_{5}}{{C}_{6}}-\overset{O}{\mathop{\overset{\parallel }{\mathop{C}}\,}}\,-C{{H}_{2}}-\overset{O}{\mathop{\overset{\parallel }{\mathop{C}}\,}}\,-{{C}_{6}}{{H}_{5}}\] done clear
  B)
  \[{{H}_{5}}{{C}_{6}}-\overset{O}{\mathop{\overset{\parallel }{\mathop{C}}\,}}\,-C{{H}_{3}}\] done clear
  C)
  \[{{H}_{5}}{{C}_{6}}-\overset{O}{\mathop{\overset{\parallel }{\mathop{C}}\,}}\,-H\] done clear
  D)
  Both [a] and [b] done clear
  View Solution play_arrow

• question_answer8)
  The change in the state of hybridization of the asterisked carbon in the following reaction. \[C{{H}_{3}}\overset{*}{\mathop{C}}\,N\xrightarrow{{{H}_{2}}O}C{{H}_{3}}\overset{*}{\mathop{C}}\,ON{{H}_{2}}\] is
  A)
  \[s{{p}^{3}}\] to \[s{{p}^{2}}\]      done clear
  B)
  \[s{{p}^{3}}\] to sp done clear
  C)
  sp to\[s{{p}^{2}}\]                   done clear
  D)
  \[s{{p}^{2}}\] to \[s{{p}^{3}}\] done clear
  View Solution play_arrow

• question_answer9)
  In the reaction shown below the six membered ring is generated by shifting which bond
  A)
  A                      done clear
  B)
  B done clear
  C)
  C                                  done clear
  D)
  D done clear
  View Solution play_arrow

• question_answer10)
  Which among the following is substitution reaction?
  A)
    done clear
  B)
        done clear
  C)
  \[{{R}_{3}}COH\xrightarrow[Conc.\,HCl]{Anhy.Znc{{l}_{2}}}Turbidity\] done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer11)
  In allene \[({{C}_{3}}{{H}_{4}})\], the type(s) of hybridization of the carbon atoms is (are):
  A)
  \[sp\] and \[s{{p}^{3}}\]            done clear
  B)
  \[s{{p}^{2}}\] and \[sp\] done clear
  C)
  only \[s{{p}^{2}}\]                                done clear
  D)
  \[s{{p}^{2}}\] and \[s{{p}^{3}}\] done clear
  View Solution play_arrow

• question_answer12)
  The correct IUPAC name of the following compound  is:
  A)
  4 - methyl - 3 - ethylhexane done clear
  B)
  3 - ethyl - 4 - methylhexane done clear
  C)
  3, 4- ethylmethylhexane done clear
  D)
  4 - ethyl - 3 - methylhexane done clear
  View Solution play_arrow

• question_answer13)
  Which molecule will be most reactive for \[{{S}_{N}}1\] reaction?
  A)
      done clear
  B)
  done clear
  C)
      done clear
  D)
  done clear
  View Solution play_arrow

• question_answer14)
  Arrange the following in decreasing order of solubility in water
  A)
  \[I>III>II\] done clear
  B)
  \[III>II>I\] done clear
  C)
  \[II>III>I\] done clear
  D)
  All are equally soluble done clear
  View Solution play_arrow

• question_answer15)
  The correct priorities for the substituents shown below, according to the E-Z sequence rule is

  I. \[-CN\]

  II. \[-CBr{{\left( C{{H}_{3}} \right)}_{2}}\]

  III. \[-COOH\]

  IV. \[-C{{H}_{2}}-\overset{O}{\mathop{\overset{\parallel }{\mathop{C}}\,}}\,-OC{{H}_{3}}\]

  V. \[-\overset{O}{\mathop{\overset{\parallel }{\mathop{C}}\,}}\,-H\]

  A)
  II, III, V, I, IV                 done clear
  B)
  V, II, I, IV, III done clear
  C)
  III, Iv, I, II, V                 done clear
  D)
  II, V, I, IV, III done clear
  View Solution play_arrow

• question_answer16)
  The alcohol product(s) of the reduction of 2-methyl-3-pentanone with \[LiAl{{H}_{4}}\] is (are)
  A)
  a single enantiomer done clear
  B)
  racemic mixture done clear
  C)
  two diastereoisomers done clear
  D)
  two structural isomers done clear
  View Solution play_arrow

• question_answer17)
  Identity which of the strucutre below are meso structures?

  [a]

  [b]

  [c]

  [d]

  A)
  1 and 3             done clear
  B)
  1, 3 and 5 done clear
  C)
  1, 3 and 4          done clear
  D)
  2 and 5 done clear
  View Solution play_arrow

• question_answer18)
  Select the most stable carbocation amongst the following
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer19)
  Which of the following reactions is elimination reaction?
  A)
    done clear
  B)
  \[{{C}_{2}}{{H}_{5}}Cl+KOH\to {{C}_{2}}{{H}_{5}}OH+KCl\] done clear
  C)
  done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer20)
  In the following groups

  \[\underset{(I)}{\mathop{-OAc}}\,\]                                 \[\underset{(II)}{\mathop{-O}}\,Me\]

  \[-\underset{(III)}{\mathop{OS{{O}_{2}}}}\,Me\]                        \[-\underset{(IV)}{\mathop{OS{{O}_{2}}}}\,C{{F}_{3}}\]

  the order of leaving group ability is

  A)
  \[I>II>III>IV\]    done clear
  B)
  \[IV>III>I>II\] done clear
  C)
  \[III>II>I>IV\]    done clear
  D)
  \[II>III>IV>I\] done clear
  View Solution play_arrow

• question_answer21)
  A mixture containing the following four compounds is extracted with 1M\[HCl\]. The compound that goes to aqueous layer is:

  (I)

  (II)

  (III)

  (IV)

  A)
  (I)                    done clear
  B)
  (II)   done clear
  C)
  (III)                               done clear
  D)
  (IV) done clear
  View Solution play_arrow

• question_answer22)
  Most stable carbocation among the following is:
  A)
  done clear
  B)
    done clear
  C)
  done clear
  D)
    \[^{+}C{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer23)
  Which of the following cannot be represented by resonance structures?
  A)
  Dimethyl ether                done clear
  B)
  Nitrate anion done clear
  C)
  Carboxylate anion done clear
  D)
  Toluene done clear
  View Solution play_arrow

• question_answer24)
  The IUPAC name of the compound  is
  A)
  1, 2-Propoxide                done clear
  B)
  Propylene oxide done clear
  C)
  1, 2-Oxo propane           done clear
  D)
  1, 2-Epoxy propane done clear
  View Solution play_arrow

• question_answer25)
   The correct relation between the bond lengths a and b is:
  A)
  a = b done clear
  B)
  b > a done clear
  C)
  b < a done clear
  D)
  Impossible to predict done clear
  View Solution play_arrow

• question_answer26)
  Which of the following compounds are meso forms?
  A)
  1 only               done clear
  B)
  3 only done clear
  C)
  1 and 2             done clear
  D)
  2 and 3 done clear
  View Solution play_arrow

• question_answer27)
  Allyl is ocyanide has
  A)
  \[9\sigma \] and \[4\pi \]-bonds done clear
  B)
  \[8\sigma \] and \[5\pi \] - bonds done clear
  C)
  \[9\sigma ,\,3\pi \] and 2 non- bonded electrons done clear
  D)
  \[8\sigma ,\,3\pi \] and 4 non - bonded electrons done clear
  View Solution play_arrow

• question_answer28)
  Which one of the following is a free-radical substitution reaction?
  A)
  \[C{{H}_{3}}CHO+HCN\xrightarrow{{}}C{{H}_{3}}CH\left( OH \right)CN\] done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer29)
  The most stable canonical structure among the given structure is:
  A)
  I                                   done clear
  B)
  II done clear
  C)
  III                                 done clear
  D)
  all are equally stable done clear
  View Solution play_arrow

• question_answer30)
  Which of the following is the IUPAC name of the compound
  A)
  o - Bromo - m - chlorobenzaldehyde done clear
  B)
  2 - Bromo - 5 - chlorobenzaldehyde done clear
  C)
  6 - Bromo - 3 - chlorobenzaldehyde done clear
  D)
  1 - Bromo - 4 - chlorobenzaldehyde done clear
  View Solution play_arrow

• question_answer31)
  The IUPAC name of the following compound is
  A)
  (E)-2-hepten-4-yne done clear
  B)
  (Z)-5-hepten-3-yne done clear
  C)
  (E)-5-hepten-3-yne done clear
  D)
  (Z)-2-hepten-4-yne done clear
  View Solution play_arrow

• question_answer32)
  Dipole moment is shown by
  A)
  1,2-dichlorobenzene done clear
  B)
  trans 2, 3-dichloro-2-butene done clear
  C)
  1,4-chlorobenzene done clear
  D)
  trans-1, 2-dinitroethene done clear
  View Solution play_arrow

• question_answer33)
  The optically inactive compound from the following is:
  A)
  2 - chloropropanal done clear
  B)
  2 - chlorobutane done clear
  C)
  2 - chloropentane done clear
  D)
  2 - chloro - 2- methylbutane done clear
  View Solution play_arrow

• question_answer34)
  Tautomerism is exhibited by -

  (1)	(2)
  (3)	(4)

  A)
  (1), (3) and (4)     done clear
  B)
  (2), (3), and (4) done clear
  C)
  (1), (2) and (4)     done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer35)
  Which of the following represents the correct order of stability of the given carbocations?
  A)
        done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer36)
  Which of the following behaves both as a nucleophile and as an electrophile?
  A)
  \[C{{H}_{3}}C\equiv N\] done clear
  B)
  \[C{{H}_{3}}OH\] done clear
  C)
  \[C{{H}_{2}}=CHC{{H}_{3}}\]           done clear
  D)
  \[C{{H}_{3}}N{{H}_{2}}\] done clear
  View Solution play_arrow

• question_answer37)
  What is the decreasing order of strength of the bases \[O{{H}^{-}},NH_{2}^{-},HC\equiv {{C}^{-}}~\] and \[C{{H}_{3}}CH_{2}^{-}\]?
  A)
  \[C{{H}_{3}}CH_{2}^{-}>NH_{2}^{-}>HC\equiv {{C}^{-}}>O{{H}^{-}}\] done clear
  B)
  \[HC\equiv {{C}^{-}}>C{{H}_{3}}C{{H}_{2}}>NH_{2}^{-}>O{{H}^{-}}\] done clear
  C)
  \[O{{H}^{-}}>NH_{2}^{-}>HC\equiv C{{~}^{-}}>C{{H}_{3}}CH_{2}^{-}\] done clear
  D)
  \[NH_{2}^{-}>HC\equiv C{{~}^{-}}>O{{H}^{-}}>C{{H}_{3}}CH_{2}^{-}\] done clear
  View Solution play_arrow

• question_answer38)
  Pick up the correct statement regarding the following resonating structures of the anilinium  ion
  A)
  Structure II is not acceptable because carbonium ions are less stable than ammonium ions done clear
  B)
  II is not acceptable because it is non- aromatic done clear
  C)
  II is not acceptable because here nitrogen has 10 valence electrons done clear
  D)
  II is an acceptable canonical structure. done clear
  View Solution play_arrow

• question_answer39)
  Which of the following numberings is correct?

  A	B
  C	D

  A)
  A                                  done clear
  B)
  B    done clear
  C)
  C                                  done clear
  D)
  D done clear
  View Solution play_arrow

• question_answer40)
  The two compounds given below are     
  A)
  identical             done clear
  B)
  enantiomers done clear
  C)
  diastereo isomers             done clear
  D)
  regiomers done clear
  View Solution play_arrow

• question_answer41)
  The number of structural isomers for \[{{C}_{6}}{{H}_{14}}\] is:
  A)
  4                      done clear
  B)
  3     done clear
  C)
  6                                  done clear
  D)
  5 done clear
  View Solution play_arrow

• question_answer42)
  Which of the following pairs of compounds are positional isomers?
  A)
  \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-\underset{O}{\mathop{\underset{\parallel }{\mathop{C}}\,}}\,-C{{H}_{3}}\] and \[C{{H}_{3}}-C{{H}_{2}}-\underset{O}{\mathop{\underset{\parallel }{\mathop{C}}\,}}\,-C{{H}_{2}}-C{{H}_{3}}\] done clear
  B)
  \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-CHO\] and \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-\overset{O}{\mathop{\overset{\parallel }{\mathop{C}}\,}}\,-C{{H}_{3}}\] done clear
  C)
  \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-\underset{O}{\mathop{\underset{\parallel }{\mathop{C}}\,}}\,-C{{H}_{3}}\] and  \[C{{H}_{3}}-\underset{C{{H}_{3}}}{\mathop{\underset{\parallel }{\mathop{CH}}\,}}\,-C{{H}_{2}}-CHO\] done clear
  D)
  \[C{{H}_{3}}-C{{H}_{2}}-\underset{O}{\mathop{\underset{\parallel }{\mathop{C}}\,}}\,-C{{H}_{2}}-C{{H}_{3}}\] and   done clear
  View Solution play_arrow

• question_answer43)
  The correct nucleophilicity order is
  A)
  \[CH_{3}^{-}<NH_{2}^{-}<H{{O}^{-}}<{{F}^{-}}\] done clear
  B)
  \[CH_{3}^{-}\simeq NH_{2}^{-}>H{{O}^{-}}\simeq {{F}^{-}}\] done clear
  C)
  \[CH_{3}^{-}>NH_{2}^{-}>H{{O}^{-}}>{{F}^{-}}\] done clear
  D)
  \[NH_{2}^{-}>{{F}^{-}}~>H{{O}^{-}}>CH_{3}^{-}\] done clear
  View Solution play_arrow

• question_answer44)
  The correct order of heats of combustion of above compounds is:
  A)
  I > II > III        done clear
  B)
  II > I > III done clear
  C)
  III > II > I                         done clear
  D)
  III > I > II done clear
  View Solution play_arrow

• question_answer45)
  Which of the following optically active compounds racemizes in dil. \[KOH/C{{H}_{3}}OH\]
  A)
  done clear
  B)
    done clear
  C)
         done clear
  D)
    done clear
  View Solution play_arrow

• question_answer46)
  The correct number of chiral centres in
  A)
  1                                  done clear
  B)
  3     done clear
  C)
  4                                  done clear
  D)
  2 done clear
  View Solution play_arrow

• question_answer47)
  An optically active compound (A) is treated with NaI/acetone (B) is obtained What is true about (B)?
  A)
  optically active done clear
  B)
  optically inactive and racemic form done clear
  C)
  optically inactive done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer48)
  Which of the following is correct set of physical properties of the geometrical isomers?
  A)

  Dipole moment	B.P.	M.P.	Stability
  I>II	I>II	II>I	I>II

  done clear
  B)

  Dipole moment	B.P.	M.P.	Stability
  II>I	II>I	II>I	II>I

  done clear
  C)

  Dipole moment	B.P.	M.P.	Stability
  I>II	I>II	I>II	I>II

  done clear
  D)

  Dipole moment	B.P.	M.P.	Stability
  II>I	II>I	I>II	I>II

  done clear
  View Solution play_arrow

• question_answer49)
  Which of the following resonance structure is lowest in energy?

  [A]

  [B]

  [C]

  A)
  A done clear
  B)
  B done clear
  C)
  C done clear
  D)
  All have same energy done clear
  View Solution play_arrow

• question_answer50)
  A solution of(+) - 2 - chloro - 2 - phenylethane in toluene racemises slowly in the presence of small amounts of \[SbC{{l}_{5}}\] due to the formation of
  A)
  Carbanion          done clear
  B)
  Carbene done clear
  C)
  Free radical       done clear
  D)
  Carbocation done clear
  View Solution play_arrow

• question_answer51)
  In the following compounds

  (I)	(II)
  (III)	(IV)

  the order of basicity is:
  A)
  IV > I > III > II       done clear
  B)
  III > I > IV > II done clear
  C)
  II > I > III > IV       done clear
  D)
  I > III > II > IV done clear
  View Solution play_arrow

• question_answer52)
  Which one of the following compounds has non zero dipole moment?
  A)
     done clear
  B)
  done clear
  C)
  done clear
  D)
    done clear
  View Solution play_arrow

• question_answer53)
  Dipole moment of which ketone is maximum?
  A)
                    done clear
  B)
  done clear
  C)
               done clear
  D)
  done clear
  View Solution play_arrow

• question_answer54)
  Which of the following orders is correct for heat of hydrogenation of these compounds?
  A)
  I > II > III                         done clear
  B)
  III > II > I done clear
  C)
  II > III > I                         done clear
  D)
  III > I > II done clear
  View Solution play_arrow

• question_answer55)
  Which one of the following acids does not exhibit optical isomerism?
  A)
  Lactic acid         done clear
  B)
  Tartaricacid done clear
  C)
  Maleicacid         done clear
  D)
  \[\alpha \]-amino acids done clear
  View Solution play_arrow

• question_answer56)
  How many cyclic structures are possible for \[{{C}_{4}}{{H}_{6}}\]?
  A)
  3                      done clear
  B)
  5      done clear
  C)
  6                                  done clear
  D)
  4 done clear
  View Solution play_arrow

• question_answer57)
  Maleic acid and fumaric acids are
  A)
  Chain isomers done clear
  B)
  Functional isomers done clear
  C)
  Tautomers done clear
  D)
  Geometrical isomers done clear
  View Solution play_arrow

• question_answer58)
  One among the following compounds will not give effervescence with sodium carbonate:
  A)
  \[{{C}_{6}}{{H}_{5}}C{{O}_{2}}H\]              done clear
  B)
  done clear
  C)
  \[{{C}_{6}}{{H}_{5}}OH\]                  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer59)
  Which of the following alkenes is the most stable?
  A)
                      done clear
  B)
  done clear
  C)
                      done clear
  D)
  done clear
  View Solution play_arrow

• question_answer60)
  Which of the following statements is not correct?
  A)
  Carbocation posses sextet of electrons. done clear
  B)
  The order of Carbocation stability is: \[\overset{+}{\mathop{C}}\,{{H}_{3}}>{{\left( C{{H}_{3}} \right)}_{2}}\overset{+}{\mathop{C}}\,H>{{\left( C{{H}_{3}} \right)}_{3}}\overset{+}{\mathop{C}}\,\] done clear
  C)
  Carbocations have trigonal planar shape done clear
  D)
  Carbocations are formed by heterolytic cleavage     done clear
  View Solution play_arrow

• question_answer61)
  The enol form of acetone after treatment with \[{{D}_{2}}O\] gives:
  A)
  \[C{{H}_{3}}-\overset{OD}{\mathop{\overset{|}{\mathop{C}}\,}}\,=C{{H}_{2}}\]        done clear
  B)
  \[C{{H}_{3}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,=C{{D}_{3}}\] done clear
  C)
  \[C{{H}_{2}}=\overset{OH}{\mathop{\overset{|}{\mathop{C}}\,}}\,-C{{H}_{2}}D\] done clear
  D)
    \[C{{D}_{2}}=\overset{OD}{\mathop{\overset{|}{\mathop{C}}\,}}\,-C{{D}_{3}}\] done clear
  View Solution play_arrow

• question_answer62)
  Indicate whether each of the following pairs are identical or not?  

  (I)

  (II)

  (III)

  A)
  I-enantiomers; II-diastereomers; III-enantiomers done clear
  B)
  I-identical; II-enantiomers; III-enantiomers done clear
  C)
  I-enantiomers; II-diastereomers; III-identical done clear
  D)
  I-enantiomers; II-identical; III-identical done clear
  View Solution play_arrow

• question_answer63)
  Which of the following compound has plane of symmetry?    \[R=-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-Cl\] ,  \[S=-\underset{Br}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-Cl\]
  A)
    done clear
  B)
  done clear
  C)
     done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer64)
  Which of the following is not a resonance form of the enolate ion formed in the following acid base equilibrium
  A)
                    done clear
  B)
  done clear
  C)
                    done clear
  D)
  done clear
  View Solution play_arrow

• question_answer65)
  The order of stability of the following carbocations:  

  (I) \[C{{H}_{2}}=CH-\overset{+}{\mathop{C}}\,{{H}_{2}}\]

  (II) \[C{{H}_{3}}-C{{H}_{2}}-\overset{+}{\mathop{C}}\,{{H}_{2}}\]

  (III)

  (IV) \[\overset{+}{\mathop{C}}\,{{H}_{3}}\] is:

  A)
  IV > III > II > I       done clear
  B)
  II > III > I > IV done clear
  C)
  III > I> II > IV       done clear
  D)
  III > I > IV > II done clear
  View Solution play_arrow

• question_answer66)
  1.4 kg of an organic compound was digested according to Kjeldah method and the ammonia evolved was absorbed in 60 mL of M/ 10 \[{{H}_{2}}S{{O}_{4}}\]solution. The excess sulphuric acid required 20 mL of M/10 \[NaOH\] solution for neutralization. The percentage of nitrogen in the compound is:           
  A)
  10                     done clear
  B)
  3      done clear
  C)
  24                     done clear
  D)
  5 done clear
  View Solution play_arrow

• question_answer67)
  Which of the following would react most readily with nucleophiles?
  A)
              done clear
  B)
  done clear
  C)
                          done clear
  D)
  done clear
  View Solution play_arrow

• question_answer68)
  The shape of transition state is -
  A)
  Triangular planar done clear
  B)
  Square pyramidal done clear
  C)
  Trigonal bipyramidal done clear
  D)
  Tetrahedral done clear
  View Solution play_arrow

• question_answer69)
  Which one of the following is most stable?
  A)
       done clear
  B)
  done clear
  C)
              done clear
  D)
  done clear
  View Solution play_arrow

• question_answer70)
  In nucleophilic substitution reaction, order of halogens as incoming (attacking) nucleophile is:

  \[{{I}^{-}}>B{{r}^{-}}>C{{l}^{-}}\]

  The order of halogens as departing nucleophile should be:

  A)
  \[B{{r}^{-}}>{{I}^{-}}>C{{l}^{-}}\]    done clear
  B)
  \[{{I}^{-}}>B{{r}^{-}}>C{{l}^{-}}\] done clear
  C)
  \[C{{l}^{-}}>B{{r}^{-}}>{{I}^{-}}\]     done clear
  D)
    \[C{{l}^{-}}>{{I}^{-}}>B{{r}^{-}}\] done clear
  View Solution play_arrow