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Which of the following gives propyne on ...

Which of the following gives propyne on hydrolysis ?

A

`AI_(4)C_(3)`

B

`Mg_(2)C_(3)`

C

`B_(4)C`

D

`La_(4)C_(3)`

Text Solution

Verified by Experts

The correct Answer is:
B
`AI_(4)C_(3)+HOH rarr AI(OH)_(3)+CH_(4)`
`Mg_(2)C_(3)+ HOH rarr Mg(OH)_(2)+C_(3)H_(4) underset("Propyne")([HC -= C-CH_(3)])`
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ALLEN-S-BLOCK ELEMENTS -EXERCISE
  1. The paramagnetic species is

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  2. On dissolving moderate amount of sodium metal in liquid ammonia at low...

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  3. Which of the following gives propyne on hydrolysis ?

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  4. The pair of amphoteric hydroxides is

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  5. The pair whose both species are used in acid medicinal preparation is:

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  6. Which of the following oxides is not expected to react with sodium hyd...

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  7. A compound X on heating gives a colourless gas. This residue is dissol...

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  8. Property of the alkaline earth metals that increases with their atomic...

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  9. Which of the following compounds has the lowest melting point ?

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  10. Match List-I with List-II for the composition of substances and select...

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  11. Which of the following statements is incorrect:-

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  12. Which of the following is not hygroscopic-

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  13. The compound which does not exist as hydrate form

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  14. Bleaching powder does nto contain:

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  15. Sodium sulphate is soluble in water whereas barium sulphate is sparing...

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  16. The minimum equivalent conductance in fused state is shown by-

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  17. Sodium hydroxide is manufacture by the electrolysis of brine solution....

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  18. Sodium carbonate is manufactured by Solvay process, the products that ...

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  19. Which of the following does not illustrate the anomalous properties of...

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  20. Of the following the commonly used as a laboratory desiccator is

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