1.

    Which alkyne, upon reaction with sodamide (NaNH2NaNH_2) followed by treatment with 1-bromopropane, would yield 4-methylhex-2-yne?

    A

    but-1-yne

    B

    3-methylbut-1-yne

    C

    pent-1-yne

    D

    3,3-dimethylbut-1-yne

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Hydrocarbons
    🎯Topic:Alkynes
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Hard
    ⚑ Time Required :2.5 mins
    πŸ”„Ncert Concepts :Alkynes, Alkylation, Acidity of Alkynes, SN2 Reaction

    Related Questions

    1.

    Which of the following alkynes will give only one product upon reaction with HBr in the presence of peroxides?

    A

    1-butyne

    B

    2-pentyne

    C

    3-hexyne

    D

    1-hexyne

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Hydrocarbons
    🎯Topic:Alkynes
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Medium
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Alkynes, Anti-Markovnikov addition, Peroxides, Halogenation

    2.

    10mL{\rm{10 mL}} of a certain hydrocarbon require 25mL{\rm{25 mL}} of oxygen for complete combustion and the volume of CO2{\rm{C}}{{\rm{O}}_2} produced is 20mL{\rm{20 mL}}. what is the formula of hydrocarbon?

    A

    C2H2{{\rm{C}}_2}{{\rm{H}}_2}

    B

    C2H4{{\rm{C}}_2}{{\rm{H}}_4}

    C

    CH4{\rm{C}}{{\rm{H}}_4}

    D

    C2H6{{\rm{C}}_2}{{\rm{H}}_6}

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Hydrocarbons
    🎯Topic:Alkynes
    πŸŽ“ Ncert Level:Analyzing
    🎯Difficulty :Medium
    ⚑ Time Required :3 mins
    πŸ”„Ncert Concepts :Stoichiometry, Combustion, Balancing chemical equations, Mole ratios

    3.

    Acetylene and ethylene reacts with alk. KMnO4{\rm{KMn}}{{\rm{O}}_4} to give:

    A

    Oxalic acid and formic acid

    B

    Acetic acid and ethylene glycol

    C

    Ethyl alcohol and ethylene glycol

    D

    None of the above

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Hydrocarbons
    🎯Topic:Alkynes
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Hard
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :alkaline potassium permanganate oxidation, oxidation of alkenes, oxidation of alkynes

    4.

    When acetylene is passed through red hot iron tube, compound X is formed. Which one of the following reactions will yield X as the major product?

    A

    C6H5OH+Zn→Distillation{{\rm{C}}_6}{{\rm{H}}_5}{\rm{OH}} + {\rm{Zn}}\xrightarrow{{{\rm{Distillation}}}}

    B

    C6H5SO3H+NaHCO3o{{\rm{C}}_6}{{\rm{H}}_5}{\rm{S}}{{\rm{O}}_3}{\rm{H}} + {\rm{NaHC}}{{\rm{O}}_3} o

    C

    C6H12+3H2β†’Ni{{\rm{C}}_6}{{\rm{H}}_{12}} + 3{{\rm{H}}_2}\xrightarrow{{{\rm{Ni}}}}

    D

    C6H5Cl+H2O→Δ{{\rm{C}}_6}{{\rm{H}}_5}{\rm{Cl}} + {{\rm{H}}_2}{\rm{O}}\xrightarrow{\Delta }

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Hydrocarbons
    🎯Topic:Alkynes
    πŸŽ“ Ncert Level:Analyzing
    🎯Difficulty :Hard
    ⚑ Time Required :3 mins
    πŸ”„Ncert Concepts :Acetylene polymerization, Reactions of phenols, Reduction reactions, Organic reaction mechanisms

    5.

    Which of the following compounds react with, an aqueous solution of Ag(NH2)2OH{\rm{Ag}}{\left( {{\rm{N}}{{\rm{H}}_2}} \right)_2}{\rm{OH}}?

    A

    ethane

    B

    Ethene

    C

    1-butyne

    D

    2-butyne

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Hydrocarbons
    🎯Topic:Alkynes
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Reactions of alkynes, Tollens' reagent, Acidity of terminal alkynes

    6.

    A compound with molecular formula C4H6{{\rm{C}}_4}{{\rm{H}}_6} may contain:

    A

    A double bond

    B

    Two triple bonds

    C

    All single bonds

    D

    Two double bonds or a triple bond

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Hydrocarbons
    🎯Topic:Alkynes
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Easy
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Degree of unsaturation, Alkenes, Alkynes, Molecular formula

    7.

    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
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Hydrocarbons
    🎯Topic:Alkynes
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :alkyne reduction, stereochemistry, dissolving metal reduction

    8.

    The hydrocarbon which decolourizes alkaline KMnO4{\rm{KMn}}{{\rm{O}}_4} solution, but does not give any precipitate with ammoniacal silver nitrate is:

    A

    Benzene

    B

    Acetylene

    C

    Propyne

    D

    Butyne-2

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Hydrocarbons
    🎯Topic:Alkynes
    πŸŽ“ Ncert Level:Analyzing
    🎯Difficulty :Easy
    ⚑ Time Required :3 mins
    πŸ”„Ncert Concepts :alkene/alkyne reactions, oxidation, silver nitrate test, terminal alkyne, internal alkyne

    9.

    Pure acetylene has sweet ethereal smell while impure smells like garlic due to presence of:

    A

    NH3{\rm{N}}{{\rm{H}}_3}

    B

    PH3{\rm{P}}{{\rm{H}}_3}

    C

    AsH3{\rm{As}}{{\rm{H}}_3}

    D

    H2S{{\rm{H}}_2}{\rm{S}}

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Hydrocarbons
    🎯Topic:Alkynes
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :chemical properties, impurities, gas identification

    10.

    Which of the following statements is incorrect?

    A

    Acetylene is explosive above 2 atm

    B

    It is transported by dissolving in acetone

    C

    It has unpleasant garlic odour

    D

    It is used in the manufacture of Lewisite

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Hydrocarbons
    🎯Topic:Alkynes
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Properties of Acetylene, Chemical Safety, Industrial Chemistry

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