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When Lassaigne's extract (Na(2)S) is aci...

When Lassaigne's extract `(Na_(2)S)` is acidified with acetic acid and then lead acetate solution is added to it, the colour of the precipitate is

A

Blue

B

Black

C

Red

D

White

Text Solution

Verified by Experts

The correct Answer is:
B
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AAKASH SERIES-GENERAL ORGANIC CHEMISTRY-Objective Exercise -1
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  2. (A): Nitrogen in hydrazine hydroxylamine cannot be detected by 'Lassai...

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  3. When Lassaigne's extract (Na(2)S) is acidified with acetic acid and th...

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  4. For detection of sulphur in an organic compound, sodium nitroprusside ...

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  5. ClCH(2)COOH is heated with fuming HNO(3) in the presence of AgNO(3) in...

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  6. In Lassaigne's test, thiourea is converted into

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  7. Which of the following reactions takes place in Lassaigne's test for t...

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  8. Which of the following compounds may give blood red colouration while ...

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  9. The correct match is

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  10. In Lassaigne's test, the organic compound is fused with sodium metal a...

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  11. In detection of CO(2), lime water turns milky due to formation of

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  12. In Lassaigne's test for nitrogen the blue colur is due to the formatio...

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  13. Lassaigne's test gives a violet colouration with sodium nitroprusside,...

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  14. Carbon and Hydrogen are estimated by

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  15. 0.4 g of an organic compound gave 0.188g of silver bromide by a haloge...

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  16. Match the reagents used for the detection of elements in organic compo...

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  17. In Kjeldahl's method, nitrogen present in the organic compond is first...

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  18. 0.302 g of organic compound gave 0.268g of silver bromide. The % of br...

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  19. The molecular formula of an organic compound is C(4)H(9)N. The volume ...

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  20. If 0.75 g of an organic compound in Kjeldahl's method neutralized 30 m...

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