1.

    Which of the following reactions involving propyne would NOT produce a ketone as the major product?

    A

    Reaction with HgSO4HgSO_4 and H2SO4H_2SO_4

    B

    Reaction with BH3BH_3 followed by H2O2H_2O_2 in alkaline medium

    C

    Reaction with NaNa in liquid NH3NH_3

    D

    Reaction with Hg(OAc)2Hg(OAc)_2 followed by NaBH4NaBH_4

    Question Tags

    Related Questions

    4.

    Temperature of oxyacetylene flame is:

    A

    2549C2549^\circ C

    B

    2400C2400^\circ C

    C

    2700C2700^\circ C

    D

    3000  to  3500C3000{\rm{ }}\;to{\rm{ }}\;3500^\circ C

    Question Tags

    8.

    Which of the following will yield trans product from butyne?

    A

    LiAlH4{\rm{LiAl}}{{\rm{H}}_4}

    B

    Na/Liq.NH3Na/{\rm{Liq}}{\rm{.N}}{{\rm{H}}_3}

    C

    NaBH4{\rm{NaB}}{{\rm{H}}_4}

    D

    Na/catalyst{\rm{Na}}/catalyst

    Question Tags

    9.

    The correct order of increasing basicity of the given conjugate bases (R= CH3C{H_3}) is

    A

    RCOO_<HCC_<R_<N_H2{\rm{RCO}}\mathop {\rm{O}}\limits^\_ < HC \equiv \mathop {\rm{C}}\limits^\_ < \mathop {\rm{R}}\limits^\_ < \mathop N\limits^\_ {{\rm{H}}_2}

    B

    R_<HCC_<RCOO_<N_H2\mathop {\rm{R}}\limits^\_ < HC \equiv \mathop {\rm{C}}\limits^\_ < RCO\mathop {\rm{O}}\limits^\_ < \mathop {\rm{N}}\limits^\_ {{\rm{H}}_2}

    C

    RCOO_<NH2<HCC_<R_{\rm{RCO}}\mathop {\rm{O}}\limits^\_ < N{{\rm{H}}_2} < HC \equiv \mathop {\rm{C}}\limits^\_ < \mathop {\rm{R}}\limits^\_

    D

    RCOO_<HCC_<N_H2<R_{\rm{RCO}}\mathop {\rm{O}}\limits^\_ < HC \equiv \mathop {\rm{C}}\limits^\_ < \mathop {\rm{N}}\limits^\_ {{\rm{H}}_2} < \mathop {\rm{R}}\limits^\_

    Question Tags

    company logo