JEE Main & Advanced Chemistry GOC Question Bank

done Bonding and hybridisation inorganic compounds Total Questions - 67

• question_answer1)
  In methane molecule, the hydrogen atoms around carbon are arranged as        [DPMT 1980; MNR 1981; MP PET 1997, 99]
  A)
  Square planar done clear
  B)
  Tetrahedral done clear
  C)
  Triangular done clear
  D)
  Octahedral done clear
  View Solution play_arrow

• question_answer2)
  In carbon tetrachloride, four valence of carbon are directed to four corners of [CPMT 1973, 77]
  A)
  Rectangle done clear
  B)
  Square done clear
  C)
  Tetrahedron done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer3)
  In alkene (ethene) number of \[s{{p}^{2}}\] hybrid carbon atoms are
  A)
  1 done clear
  B)
  2 done clear
  C)
  3 done clear
  D)
  0 done clear
  View Solution play_arrow

• question_answer4)
  Each carbon atom in benzene is in the state of hybridization [CPMT 1973, 83, 89; MP PMT 1993; KCET (Med.) 1999; DCE 2001]
  A)
  \[s{{p}^{3}}\] done clear
  B)
  \[s{{p}^{2}}\] done clear
  C)
  \[sp\] done clear
  D)
  \[{{s}^{3}}p\] done clear
  View Solution play_arrow

• question_answer5)
  Which of the following hybridisation has highest percentage of s-character [BHU 1986]
  A)
  \[s{{p}^{3}}\] done clear
  B)
  \[s{{p}^{2}}\] done clear
  C)
  \[sp\] done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer6)
  The hybridisation present in \[{{C}_{2}}{{H}_{2}}\] is [EAMCET 1993]
  A)
  \[sp\] done clear
  B)
  \[s{{p}^{2}}\] done clear
  C)
  \[s{{p}^{3}}\] done clear
  D)
  \[ds{{p}^{2}}\] done clear
  View Solution play_arrow

• question_answer7)
  What hybrid orbitals will form the following compound \[{{H}_{3}}C-CH=CH-C{{H}_{2}}-C{{H}_{3}}\] [AFMC 1991]
  A)
  \[sp\] and \[s{{p}^{3}}\] done clear
  B)
  \[s{{p}^{2}}\] and \[s{{p}^{3}}\] done clear
  C)
  \[sp\] and \[s{{p}^{2}}\] done clear
  D)
  Only \[s{{p}^{3}}\] done clear
  View Solution play_arrow

• question_answer8)
  The compound in which carbon uses only its \[s{{p}^{3}}\] hybrid orbitals for bond formation is [IIT-JEE 1989]
  A)
  \[HCOOH\] done clear
  B)
  \[{{(N{{H}_{2}})}_{2}}CO\] done clear
  C)
  \[{{(C{{H}_{3}})}_{3}}COH\] done clear
  D)
  \[{{(C{{H}_{3}})}_{3}}CHO\] done clear
  View Solution play_arrow

• question_answer9)
  A straight chain hydrocarbon has the molecular formula \[{{C}_{8}}{{H}_{10}}\]. The hybridisation for the carbon atoms from one end of the chain to the other are respectively \[s{{p}^{3}},\text{ }s{{p}^{2}},\text{ }s{{p}^{2}}\text{, }s{{p}^{3}},\text{ }s{{p}^{2}},\text{ }s{{p}^{2}},\text{ }sp\] and \[sp\]. The structural formula of the hydrocarbon would be [CBSE PMT 1992]
  A)
  \[C{{H}_{3}}-C\equiv C-C{{H}_{2}}-CH=CH-CH=C{{H}_{2}}\] done clear
  B)
  \[C{{H}_{3}}-C{{H}_{2}}-CH=CH-C{{H}_{2}}-C\equiv C-CH=C{{H}_{2}}\] done clear
  C)
  \[C{{H}_{3}}-CH=CH-C{{H}_{2}}-C\equiv C-CH=C{{H}_{2}}\] done clear
  D)
  \[C{{H}_{3}}-CH=CH-C{{H}_{2}}-CH=CH-C\equiv CH\] done clear
  View Solution play_arrow

• question_answer10)
  Which of the following has a bond formed by overlap of \[sp-s{{p}^{3}}\] hybrid orbitals [MNR 1993; UPSEAT 2001, 02]
  A)
  \[C{{H}_{3}}-C\equiv C-H\] done clear
  B)
  \[C{{H}_{3}}-CH=CH-C{{H}_{3}}\] done clear
  C)
  \[C{{H}_{2}}=CH-CH=C{{H}_{2}}\] done clear
  D)
  \[HC\equiv CH\] done clear
  View Solution play_arrow

• question_answer11)
  The bond between carbon atom (1) and carbon atom (2) in compound \[N\equiv C-CH=C{{H}_{2}}\] involves the hybridised carbon as [IIT-JEE 1987; DCE 2000]
  A)
  \[s{{p}^{2}}\] and \[s{{p}^{2}}\] done clear
  B)
  \[s{{p}^{3}}\] and \[sp\] done clear
  C)
  \[sp\] and \[s{{p}^{2}}\] done clear
  D)
  \[sp\] and \[sp\] done clear
  View Solution play_arrow

• question_answer12)
  Number of \[\pi \] bonds in \[C{{H}_{2}}=CH-CH=CH-C\equiv CH\] is [Kurukshetra CEE 1991; KCET 2000]
  A)
  2 done clear
  B)
  3 done clear
  C)
  4 done clear
  D)
  5 done clear
  View Solution play_arrow

• question_answer13)
  Number of \[\pi \] electrons present in naphthalene is [AFMC 1991]
  A)
  4 done clear
  B)
  6 done clear
  C)
  10 done clear
  D)
  14 done clear
  View Solution play_arrow

• question_answer14)
  Number of \[\pi \] electrons in cyclobutadienyl anion \[{{({{C}_{4}}{{H}_{4}})}^{-2}}\] is [IIT-JEE 1991]
  A)
  2 done clear
  B)
  4 done clear
  C)
  6 done clear
  D)
  8 done clear
  View Solution play_arrow

• question_answer15)
  Homolytic fission of C - C bond in ethane gives an intermediate in which carbon is [IIT-JEE 1992]
  A)
  \[s{{p}^{3}}\] hybridised done clear
  B)
  \[s{{p}^{2}}\]hybridized done clear
  C)
  \[sp\] hybridised done clear
  D)
  \[s{{p}^{2}}d\] hybridized done clear
  View Solution play_arrow

• question_answer16)
  In the reaction \[\begin{matrix}    Br  \\    H  \\ \end{matrix}>\underset{1}{\mathop{C}}\,=\underset{2}{\mathop{C}}\,<\begin{matrix}    Br  \\    H  \\ \end{matrix}\overset{{{H}_{2}}}{\mathop{\xrightarrow[\text{Catalyst}]{}}}\,\underset{3}{\mathop{BrC{{H}_{2}}}}\,\underset{4}{\mathop{C{{H}_{2}}Br}}\,\] The hybridisation states of carbon atoms 1, 2, 3, 4 are [MP PET 1994]
  A)
  1 and 2 \[s{{p}^{2}};\] 3 and 4 \[s{{p}^{3}}\] done clear
  B)
  1 and 2 \[s{{p}^{2}};\] 3 and 4 \[sp\] done clear
  C)
  1, 2, 3 and 4 \[sp\] done clear
  D)
  1, 2 \[s{{p}^{3}};\] 3, 4 \[s{{p}^{2}}\] done clear
  View Solution play_arrow

• question_answer17)
  In which of the compounds given below is there more than one kind of hybridisation \[(sp,\text{ }s{{p}^{2}},\text{ }s{{p}^{3}})\] for carbon (i) \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\] (ii) \[C{{H}_{3}}-CH=CH-C{{H}_{3}}\] (iii) \[C{{H}_{2}}=CH-CH=C{{H}_{2}}\] (iv) \[H-C\equiv C-H\] [CBSE PMT 1995]
  A)
  (ii) and (iv) done clear
  B)
  (i) and (iv) done clear
  C)
  (ii) and (iii) done clear
  D)
  (ii) done clear
  View Solution play_arrow

• question_answer18)
  Examine the following common chemical structures to which simple functional groups are often attached (i) (ii) (iii) (iv) \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}-\] (v) \[{{H}_{2}}C=C<\begin{matrix}    H  \\    H  \\ \end{matrix}\] Which of these systems have essentially planar geometry [CBSE PMT 1995]
  A)
  (i) and (v) done clear
  B)
  (ii) and (iii) done clear
  C)
  (ii), (iii) and (iv) done clear
  D)
  (iv) done clear
  View Solution play_arrow

• question_answer19)
  The structure of di-chloromethane is [MP PMT 1995]
  A)
  Tetrahedral done clear
  B)
  Trigonal done clear
  C)
  Linear done clear
  D)
  Hexagonal done clear
  View Solution play_arrow

• question_answer20)
  The numbers of sigma (\[\sigma \]) bonds in 1-butene is [MP PMT 1995]
  A)
  8 done clear
  B)
  10 done clear
  C)
  11 done clear
  D)
  12 done clear
  View Solution play_arrow

• question_answer21)
  Which of the following statements is false for isopentane [MP PET 1996]
  A)
  It has three \[C{{H}_{3}}\] groups done clear
  B)
  It has one \[C{{H}_{2}}\] group done clear
  C)
  It has one CH group done clear
  D)
  It has a carbon which is not bonded to hydrogen done clear
  View Solution play_arrow

• question_answer22)
  The number of \[\sigma \] bonds in o-xylene is [MP PET 1996]
  A)
  6 done clear
  B)
  9 done clear
  C)
  12 done clear
  D)
  18 done clear
  View Solution play_arrow

• question_answer23)
  In benzene the total number of \[\sigma \] bonds is [MP PMT 1997]
  A)
  3 done clear
  B)
  6 done clear
  C)
  9 done clear
  D)
  12 done clear
  View Solution play_arrow

• question_answer24)
  The number of \[s{{p}^{3}}\] hybridized carbon atoms in cyclohexene are [MP PMT 1997]
  A)
  2 done clear
  B)
  3 done clear
  C)
                  4                            done clear
  D)
  6 done clear
  View Solution play_arrow

• question_answer25)
  The number of \[\pi \] bonds in 3-hexyne-1-ene is [MP PMT 1999]
  A)
  1 done clear
  B)
  2 done clear
  C)
  3 done clear
  D)
  4 done clear
  View Solution play_arrow

• question_answer26)
  Example of \[s{{p}^{2}}\] hybridization is [CPMT 1997]
  A)
  \[CH_{3}^{+}\] done clear
  B)
  \[C{{H}_{3}}\] done clear
  C)
  \[{{C}_{2}}H_{5}^{+}\] done clear
  D)
  \[{{C}_{2}}{{H}_{5}}\] done clear
  View Solution play_arrow

• question_answer27)
  Select the molecule which has only one \[\pi -\text{bond}\] [Pb. PMT 1998]
  A)
  \[CH\equiv CH\] done clear
  B)
  \[C{{H}_{2}}=CHCHO\] done clear
  C)
  \[C{{H}_{3}}CH=C{{H}_{2}}\] done clear
  D)
  \[C{{H}_{3}}CH=CHCOOH\] done clear
  View Solution play_arrow

• question_answer28)
  Carbon atoms in the compound \[{{(CN)}_{4}}{{C}_{2}}\] are [Roorkee 1999]
  A)
  sp hybridized done clear
  B)
  \[s{{p}^{2}}\] hybridized done clear
  C)
  sp and \[s{{p}^{2}}\] hybridized done clear
  D)
  sp, \[s{{p}^{2}}\] and \[s{{p}^{3}}\] hybridized done clear
  View Solution play_arrow

• question_answer29)
  Acetylene molecules contain [DCE 1999]
  A)
  5\[\sigma \] bond done clear
  B)
  4\[\sigma \] bond and \[1\pi \] bond done clear
  C)
  3\[\sigma \] and 2\[\pi \] done clear
  D)
  3\[\sigma \]  and 3\[\pi \] done clear
  View Solution play_arrow

• question_answer30)
  Number of unhybridised orbitals in vinyl acetylene are [RPMT 1999]
  A)
  2 done clear
  B)
  3 done clear
  C)
  4 done clear
  D)
  6 done clear
  View Solution play_arrow

• question_answer31)
  Maximum bond energy of \[C-H\] bonds is found in the compound [RPMT 1999]
  A)
  Ethane done clear
  B)
  Ethene done clear
  C)
  Ethyne done clear
  D)
  Equal in all the three done clear
  View Solution play_arrow

• question_answer32)
  Ethylene possess [RPET 1999]
  A)
  Two sigma and two pi bonds done clear
  B)
  Two pi bonds done clear
  C)
  Five sigma and one pi bond done clear
  D)
  Four sigma and one pi bond done clear
  View Solution play_arrow

• question_answer33)
  The hybridization involved in the six carbon atoms of benzene is [BHU 1999]
  A)
  \[3s{{p}^{3}},\,\,3s{{p}^{2}}\] done clear
  B)
  \[3s{{p}^{3}},\,\,3sp\] done clear
  C)
  All \[6sp\] done clear
  D)
  All \[6s{{p}^{2}}\] done clear
  View Solution play_arrow

• question_answer34)
  1, 3-butadiene has [JIPMER 2000]
  A)
  sp and \[s{{p}^{2}}\] hybridised C-atoms done clear
  B)
  sp, \[s{{p}^{2}}\] and \[s{{p}^{3}}\] hybridized C-atoms done clear
  C)
  Only \[s{{p}^{2}}\] hybridised C-atoms done clear
  D)
  Only sp hybridised C-atoms done clear
  View Solution play_arrow

• question_answer35)
  Which of the following \[C-H\] bond has the lowest bond dissociation energy [CBSE PMT 2000]
  A)
  Primary \[({{1}^{o}})\] \[C-H\] bond done clear
  B)
  Secondary \[({{2}^{o}})\] \[C-H\]bond done clear
  C)
  Tertiary \[({{3}^{o}})\] \[C-H\] bond done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer36)
  Number of  \[\sigma \] and \[\pi \]bonds present in 1- butene-3-yne respectively are [RPMT 1999; MP PET 2000; DCE 2000]
  A)
  \[7\sigma ,\,3\pi \] done clear
  B)
  \[5\sigma ,\,2\pi \] done clear
  C)
  \[8\sigma ,3\pi \] done clear
  D)
  \[6\sigma ,2\pi \] done clear
  View Solution play_arrow

• question_answer37)
  Which is an acidic hydrocarbon [AMU 2000]
  A)
  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\] done clear
  B)
  \[C{{H}_{3}}C\equiv CC{{H}_{3}}\] done clear
  C)
  \[C{{H}_{3}}C\equiv CH\] done clear
  D)
  \[C{{H}_{2}}=CH-CH=C{{H}_{2}}\] done clear
  View Solution play_arrow

• question_answer38)
  A carbon-carbon triple bond in ethyne \[(-C\equiv C-)\] consists of [AMU 2000]
  A)
  All \[\sigma \] bonds done clear
  B)
  Two \[\sigma \] bonds and one \[\pi \]-bond done clear
  C)
  One \[\sigma \] bond and two \[\pi \]bonds done clear
  D)
  All \[\pi \] bonds done clear
  View Solution play_arrow

• question_answer39)
  Toluene has [MP PMT 2000; Kerala CET 2005]
  A)
  6\[\sigma \]and 3 \[\pi \]bond done clear
  B)
  9 \[\sigma \]and 3\[\pi \]bond done clear
  C)
  9 \[\sigma \]and 6\[\pi \]bond done clear
  D)
  15\[\sigma \]and 3\[\pi \] bond done clear
  View Solution play_arrow

• question_answer40)
  In compound X, all the bond angles are exactly \[{{109}^{o}}28',\] X is [DPMT 2000]
  A)
  Chloroform done clear
  B)
  Carbon tetrachloride done clear
  C)
  Chloromethane done clear
  D)
  Iodoform done clear
  View Solution play_arrow

• question_answer41)
  Which of the following hybridization is known as trigonal hybridization [MH CET 2000]
  A)
  \[s{{p}^{3}}\] done clear
  B)
  sp done clear
  C)
  \[s{{p}^{2}}\] done clear
  D)
  \[ds{{p}^{2}}\] done clear
  View Solution play_arrow

• question_answer42)
  The types of hybridization present in 1, 2- butadiene are [MH CET 2000]
  A)
  \[sp,s{{p}^{2}}\,\,\text{and}\,\,s{{p}^{3}}\] done clear
  B)
  \[s{{p}^{2}}\,\,\text{and}\,\,s{{p}^{3}}\] done clear
  C)
  \[s{{p}^{2}}\,\,\text{and}\,\,sp\] done clear
  D)
  \[sp\,\,\text{and}\,\,s{{p}^{3}}\] done clear
  View Solution play_arrow

• question_answer43)
  The C-H bond distance is longest in [BHU 2001]
  A)
  \[{{C}_{2}}{{H}_{2}}\] done clear
  B)
  \[{{C}_{2}}{{H}_{4}}\] done clear
  C)
  \[{{C}_{2}}{{H}_{6}}\] done clear
  D)
  \[{{C}_{6}}{{H}_{6}}\] done clear
  View Solution play_arrow

• question_answer44)
  Conjugated double bond is present in [RPMT 1999; JIPMER 2001]
  A)
  1, 2-butadiene done clear
  B)
  1, 3-butadiene done clear
  C)
  1, 3-pentadiene done clear
  D)
  \[\beta \]-butylene done clear
  View Solution play_arrow

• question_answer45)
  In which of the following species is the underlined carbon having \[s{{p}^{3}}\] hybridisation [AIEEE 2002]
  A)
  \[C{{H}_{3}}\underline{C}OOH\] done clear
  B)
  \[C{{H}_{3}}\,\,\underline{C}{{H}_{2}}OH\] done clear
  C)
  \[C{{H}_{3}}\underline{C}OC{{H}_{3}}\] done clear
  D)
  \[C{{H}_{2}}=\underline{C}H-C{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer46)
  The \[H-C-H\] bond angle in \[C{{H}_{4}}\]is [MP PET 2002]
  A)
  \[{{109}^{o}}28'\] done clear
  B)
  \[{{107}^{o}}28'\] done clear
  C)
  \[{{90}^{o}}\] done clear
  D)
  \[{{180}^{o}}\] done clear
  View Solution play_arrow

• question_answer47)
  The hybridisation of carbons of \[C-C\]single bond of \[HC\equiv C-CH=C{{H}_{2}}\]is [RPMT 2002]
  A)
  \[s{{p}^{3}}-s{{p}^{3}}\] done clear
  B)
  \[sp-s{{p}^{2}}\] done clear
  C)
  \[s{{p}^{3}}-sp\] done clear
  D)
  \[s{{p}^{2}}-s{{p}^{3}}\] done clear
  View Solution play_arrow

• question_answer48)
  The shape of ethylene molecule is [AFMC 2002]
  A)
   Square planar done clear
  B)
  Furan done clear
  C)
  Trigonal planar done clear
  D)
  Tetrahedral done clear
  View Solution play_arrow

• question_answer49)
  Acetylene molecule has carbon in [Kerala (Engg.) 2002]
  A)
  \[sp\]- hybridisation done clear
  B)
  \[s{{p}^{2}}\]- hybridisation done clear
  C)
  \[s{{p}^{3}}\]- hybridisation done clear
  D)
  \[s{{p}^{3}}d\]- hybridization done clear
  View Solution play_arrow

• question_answer50)
  In the formation of methane molecule, carbon makes use of [DPMT 2001; MP PMT 2002]
  A)
  \[sp\]-hybridised orbitals done clear
  B)
  \[s{{p}^{2}}\]-hybridised orbitals done clear
  C)
  \[s{{p}^{3}}\]-hybridised orbitals done clear
  D)
   Unhybridised orbitals done clear
  View Solution play_arrow

• question_answer51)
  In graphite C-atom is in ....state [CPMT 2002]
  A)
  \[s{{p}^{3}}\] done clear
  B)
  \[sp\] done clear
  C)
  \[s{{p}^{2}}\] done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer52)
  How many p-bonds are present in naphthalene molecule [RPMT 2002]
  A)
  3 done clear
  B)
  4 done clear
  C)
  5 done clear
  D)
  6 done clear
  View Solution play_arrow

• question_answer53)
  Hybridisation state of C in diamond is [RPMT 2002]
  A)
  \[sp\] done clear
  B)
  \[s{{p}^{2}}\] done clear
  C)
  \[s{{p}^{3}}\] done clear
  D)
  \[s{{p}^{3}}d\] done clear
  View Solution play_arrow

• question_answer54)
  The number of \[\sigma \]and \[\pi \]bonds present in pent-4-ene, 1-yne is [AIIMS 2002; CPMT 2002]
  A)
  10, 3 done clear
  B)
  3, 10 done clear
  C)
  4, 9 done clear
  D)
  9, 4 done clear
  View Solution play_arrow

• question_answer55)
  Which one of the following is more acidic [DPMT 2002]
  A)
  Butane done clear
  B)
  1-butene done clear
  C)
  1-butyne done clear
  D)
  2-butyne done clear
  View Solution play_arrow

• question_answer56)
  Graphite is soft while diamond is hard because [BHU 2003]
  A)
  Graphite is in powder form done clear
  B)
  Diamond has \[s{{p}^{2}}\]hybridization but graphite has \[s{{p}^{3}}\]hybridization done clear
  C)
  Graphite is in planar form while diamond is in tetrahedral form done clear
  D)
  Graphite is covalent and diamond is ionic done clear
  View Solution play_arrow

• question_answer57)
  Hybridization of 1 and 2 carbon atoms in \[\overset{1}{\mathop{C{{H}_{2}}}}\,=\overset{2}{\mathop{C}}\,=C{{H}_{2}}\] [BHU 2003]
  A)
  \[sp,\,sp\] done clear
  B)
  \[s{{p}^{2}},s{{p}^{2}}\] done clear
  C)
  \[s{{p}^{2}},sp\] done clear
  D)
  \[s{{p}^{3}},s{{p}^{2}}\] done clear
  View Solution play_arrow

• question_answer58)
  Hydrogen bonding is maximum in [UPSEAT 2003]
  A)
  \[{{C}_{2}}{{H}_{5}}OH\] done clear
  B)
  \[C{{H}_{3}}-O-C{{H}_{3}}\] done clear
  C)
  \[{{(C{{H}_{3}})}_{2}}C=O\] done clear
  D)
  \[C{{H}_{3}}CHO\] done clear
  View Solution play_arrow

• question_answer59)
  How many methyl group are present in 2, 5-dimethyl-4-ethylheptane [EAMCET 2003]
  A)
  2 done clear
  B)
  3 done clear
  C)
  4 done clear
  D)
  5 done clear
  View Solution play_arrow

• question_answer60)
  Which one of the following does not have \[s{{p}^{2}}\] hybridised carbon [AIEEE 2004]
  A)
  Acetonitrile done clear
  B)
  Acetic acid done clear
  C)
  Acetone done clear
  D)
   Acetamide done clear
  View Solution play_arrow

• question_answer61)
  Allyl cyanide contain s- and p-bonds [MP PET 2004]
  A)
  9s, 3p done clear
  B)
  9s, 9p done clear
  C)
  3s, 4p done clear
  D)
   5s, 7p done clear
  View Solution play_arrow

• question_answer62)
  Strongest acid is [MP PMT 2004]
  A)
  \[HC\equiv CH\] done clear
  B)
  \[{{C}_{2}}{{H}_{6}}\] done clear
  C)
  \[{{C}_{6}}{{H}_{6}}\] done clear
  D)
  \[C{{H}_{3}}OH\] done clear
  View Solution play_arrow

• question_answer63)
  \[-C\equiv C-\] bond is found in [BHU 1982; MP PMT 1994]
  A)
  Ethene done clear
  B)
  Butene done clear
  C)
  Ethyne done clear
  D)
  Glycerine done clear
  View Solution play_arrow

• question_answer64)
  Number of s bonds in [CPMT 1994]
  A)
  6 done clear
  B)
  15 done clear
  C)
  10 done clear
  D)
  12 done clear
  View Solution play_arrow

• question_answer65)
  Number of bonds in benzene [DPMT 2005]
  A)
  \[6\sigma \] and \[3\pi \] done clear
  B)
  \[12\sigma \] and \[3\pi \] done clear
  C)
  \[3\pi \] and \[12\pi \] done clear
  D)
  \[6\sigma \] and \[6\pi \] done clear
  View Solution play_arrow

• question_answer66)
  Which is most acidic of the following [J & K 2005]
  A)
  Methane done clear
  B)
  Acetylene done clear
  C)
  1-butene done clear
  D)
  Neo-pentane done clear
  View Solution play_arrow

• question_answer67)
  The enolic form of acetone contains [Pb. PMT 2002]
  A)
  8\[\sigma \]bonds, \[2\pi \]-bonds and 1 lone pairs done clear
  B)
  \[9\sigma \]-bonds, \[1\pi \]-bond and 2 lone pairs done clear
  C)
  \[9\sigma \]-bonds, \[2\pi \]-bonds and 1 lone pairs done clear
  D)
  10\[\sigma \]-bonds, 1\[\pi \]-bonds and 1 lone pairs done clear
  View Solution play_arrow