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Lindlar' catalyst is:...

Lindlar' catalyst is:

A

Na in liquid `NH_(3)`

B

Pt in ethanol

C

Ni in ether

D

Pd with `BaSO_(4)`

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The correct Answer is:
D
`BaSO_(4)` works as poison and block active site of Pd.
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BANSAL-HYDROCARBONS-Exercise 1
  1. Which order is correct for bond length-

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  2. The relative acidity of ehtyne, ethene and ethane follows the order-

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  3. Ethyne adds on HCl to first give a-

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  4. Which one of these will react with sodium metal-

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  5. Acetylene on passing into excess of HOCl solution forms-

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  6. Dichloro acetoe can be prepared by the reaction-

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  7. Given the followign reactions propyne +HCl(g)toA A+KI(g)toB The co...

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  8. Ethene can be separated from ethyne by passing the mixture through

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  9. Water can be added across a triple bond in the presence of

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  10. Lindlar' catalyst is:

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  11. The compounds 1-butyne and 2-butyne can be distinguished by using

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  12. Which of the following reacts with metal by displacing H-atom?

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  13. Acetylene when passed through 20% H(2)SO(4) at 80^(@)C gives acetaldeh...

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  14. Additiion of HCN to ethyne is presence of Ba(CN)(2) as catalyst gives-

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  15. A gas on passing through ammonical solution of AgNO(3) does not give a...

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  16. 1-Butyne reacts with cold alkaline KMnO(4) to produce

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  17. CH(3)-C-=CH+H(2)Ounderset(Hg^(+2))overset(H^(+))to'A' here A is-

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  18. Distinction in pentene-1 and pentyne-1 is done by

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  19. Which of the following is most acidic?

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  20. Acetylene reacts with ammonical silver nitrate to form

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