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Catalyst used in dimerisation of acetyle...

Catalyst used in dimerisation of acetylene to prepare chloroprene is

A

`HgSO_4+ H_2SO_4`

B

`Cu_2Cl_2`

C

`Cu_2Cl_2 + NH_4OH`

D

`Cu_2Cl_2+ NH_4Cl`

Text Solution

Verified by Experts

The correct Answer is:
D
`underset"Acetylene"(HC-=CH+HC-=CH)overset(Cu_2Cl_2+NH_4Cl)to underset"Vinylacetylene"(H-C-=C-CH_2)overset"HCl"to underset"Chloroprene"(H_2C=oversetoverset(Cl)|C-CH=CH_2)`
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Catalyst used in the dimerization of acetylene to prepare chloroprene is

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PRADEEP-HYDROCARBONS-Competition Focus (JEE(main and advanced)/Medical Entrance) I. MULTIPLE CHOICE QUESTIONS
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  2. Identify X in the following sequence of reactions : CH3-undersetunde...

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  3. Catalyst used in dimerisation of acetylene to prepare chloroprene is

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  4. Which of the following reagents will be able to distinguish between 1-...

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  5. Propyne and propene can be distinguished by :

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  6. Ethylene can be separated from acetylene by passing the maxiture throu...

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  7. 1-Butyne reacts with cold alkaline KMnO(4) to produce

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  8. A compound X (C5H8) reacts with ammoniacal AgNO3 to give a white preci...

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  9. CH3-C-=C-CH3 underset((ii)H2O //Zn)overset((i)X)to CH3-undersetunderse...

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  10. CH-=CH overset(O3)to X overset(Zn//CH3OH)to Y, Y is

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  13. The hydrocarbon which does not decolourise alkaline KMnO4 solution and...

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  14. The correct statement is :

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  15. Which one of the following is an aromatic compound ?

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  16. Which of the following compounds is not aromatic ?

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  17. From the following compounds choose the one which is not aromatic ?

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  18. The chemical system that is non- aromatic is

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  19. Among the following the aromatic compound is

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  20. Which of the following compounds are aromatic ?

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