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When but-2-yne is treated with Na in liq...

When but-2-yne is treated with Na in liquid ammonia:

A

cis-2-butene is obtained

B

trans-2-butene is formed

C

n-butane is the major product

D

it rearranges to but-1-yne

Text Solution

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The correct Answer is:
B

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MODERN PUBLICATION-HYDROCARBONS-COMPETITION FILE (OBJECTIVE TYPE QUESTIONS) (MULTIPLE CHOICE QUESTIONS from competitive examinations (JEE (Main) and Other State Boards. Engineering Entrance))
  1. n- C(7)H(16) underset(10-20 "atm.")overset(V(2)O(5), 500^(@)C)to A ove...

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  2. The products obtained by the ozonolysis of 2-ethyl but-1-ene are:

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  3. When but-2-yne is treated with Na in liquid ammonia:

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  4. The major product of the above reaction is

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  5. Which of the following compounds will exhibit geometrical isomerism?

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  6. Which compund will yield 5-keto -2 methyl hexanal upon treatment with ...

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  7. The major products obtained on ozonolysis of 2,3-dimethyl-1-butene fol...

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  8. Predict the product (B) in the following sequence of reactions: "Eth...

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  9. The reaction of propene with HOCI (CI(2)+H(2)O) proceeds through the i...

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  10. The isomerism of 2-butyne to 1-butyne can be achieved by treatment wit...

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  11. The reaction of propene with HBr in presence of peroxide proceeds thro...

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  12. Which of the following molecules is least resonance stabilized ?

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  13. The trans-alkenes are formed by the reduction of alkynes with

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  14. What final product will form when alcoholic KOH is treated with 1, 1-...

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  15. The reagent X' used for the following reaction is

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  16. Number of possible constitutional isomers of alkane with formula C6 H1...

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  17. Phenylacetylene on treatment with HgSO(4)//H(2)SO(4), H(2)O produces

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  18. CH(3)-C -=CMgBr can be prepared by the reaction of

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  19. The major product of the following reaction is : CH(3)CH(2)underset(...

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  20. The most stable conformation of cyclohexane is :

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