Which of the following hydrocarbons has acidic hydrogens? (a) 1-Butene (b) 1-Butyne (c) 2-Butene (d) 2-Butyne

Which of the following hydrocarbons has acidic hydrogens?
(a) 1-Butene
(b) 1-Butyne
(c) 2-Butene
(d) 2-Butyne
by

1 Answer

Answer :

1-Butyne
by

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A compound, C4H6, reacts with bromine and forms a white precipitate with ammoniacal silver nitrate solution. It reacts with dilute H2SO4 in the presence of mercuric sulfate to form 2-butanone. The compound could be (a) 1-Butyne (b) 1-Butene (c) 2-Butyne (d) 2-Butene

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Description : Starting with 2-butene, which of the following is the best method for preparing 2-butyne? (a) HBr; H2/Ni; Zn/H+ (b) HBr; Zn/H+; H2/Ni (c) Br2/CCl4; Zn/H+; H2/Ni (d) Br2/CCl4; 2NaNH2

Last Answer : Br2/CCl4; 2NaNH2

The reagent needed to convert 2-butyne to cis-2-butene is : (a) H2/Pt (b) H2/Lindlar’s catalyst (c) Li/NH3 (d) Na/NH3

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Ozonolysis of 2-butyne gives (a) Formic acid (b) Propanoic acid (c) Acetic acid (d) Butanoic acid

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Among the compounds water, 1-butyne, 2-butyne, and ethane, which are stronger acids than ammonia? (a) 1-butyne and ethane (b) water and 1-butyne (c) water and ethane (d) 1-butyne and 2-butyne

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What is the molar mass of 2 hydrogens and one sulfur?

Description : What is the molar mass of 2 hydrogens and one sulfur?

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A hydrocarbon, C6H12, on ozonolysis gives only one product which does not give silver mirror with Tollens' reagent. The hydrocarbon is (a) 2,3-Dimethyl-2-butene (b) 2-Hexene (c) 2-Methyl-2-pentene (d) 3-Hexene

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Which of the following alkenes will give a mixture of acetone and formaldehyde on ozonolysis? (a) 2-butene (b) 2-methyl-2-butene (c) 1-butene (d) 2-methylpropene

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Which of the following alkenes gives only acetic acid on oxidation with hot concentrated KMnO4. (a) Ethylene (b) 1-Butene (c) Propene (d) 2-Butene

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1-Butene reacts with Cl2 in H2O to give (a) 1-Chloro-2-butanol (b) 2-Chloro-2-butanol (c) 1-Chloro-1-butanol (d) 2-Chloro-1-butanol

Description : 1-Butene reacts with Cl2 in H2O to give (a) 1-Chloro-2-butanol (b) 2-Chloro-2-butanol (c) 1-Chloro-1-butanol (d) 2-Chloro-1-butanol

Last Answer : 1-Chloro-2-butanol

2-Methyl-2-butene reacts with HBr in the presence of peroxide to give (a) A primary alkyl bromide (b) A secondary alkyl bromide (c) A tertiary alkyl bromide (d) A vicinal dibromide

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Last Answer : A secondary alkyl bromide

Which of the following alkenes reacts with HBr in the presence of a peroxide to give anti-Markovnikov's product? (a) 1-Butene (b) 2,3-Dimethyl-2-butene (c) 2-Butene (d) 3-Hexene

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Last Answer : 1-Butene

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Last Answer : 2-Bromobutane

Markovnikov's addition of HBr is not applicable to (a) Propene (b) 1-butene (c) 1-pentene (d) 2-butene

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Last Answer : 2-butene

The major product of acid-catalyzed dehydration of 3-pentanol is : (a) 1-Pentene (b) 2-Methyl-1-butene (c) 2-Pentene(d) 3-Methyl-1-butene

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Which of the following compounds is most stable? (a) Ethylene (b) 2,3-Dimethyl-1-butene(c) Propylene (d) 2-Butene

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Last Answer : 2,3-Dimethyl-1-butene

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Last Answer : 2,3-Dimethylbutane

Which of the following compounds does not dissolve in concentrated H2SO4 on warming? (a) n-Hexane (b) Diethyl ether (c) 1-Butene (d) Aniline

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Which of the following is capable of exhibiting cis-trans isomerism? (a) 1-butene (b) 1-pentene (c) ethene (d) 2-butene

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