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In Lassaigne's test, the organic compoun...

In Lassaigne's test, the organic compound is first fused with sodium metal The sodium metal is used because

A

The melting point of sodium metal is low

B

Sodium metal reacts with elements present in organic compounds to form inorganic compounds.

C

All sodium salts are soluble in water

D

All sodium salts are not soluble in water

Text Solution

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The correct Answer is:
A, B, C
Sodium metal is used in Lassaigne.s test due to melting point of sodium metal is law and sodium metal reacts with elements present in organic compound to form inorganic compound all sodium salts and soluble in water.
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Knowledge Check

  • In Lassaigne's test, the organic compound is fused with sodium metal as to

    A
    hydrolyse the compound
    B
    forms a sodium derivative
    C
    covert nitrogen, sulphur of halogens if present into soluble ionic sodium compounds
    D
    burn the compound.

  • In Lassaigne.s test, the organic compound is fused with sodium metal as to

    A
    hydrolyse the compound
    B
    forms a sodium derivative
    C
    covert nitrogen, sulphur or halogens if present into soluble ionic sodium compounds
    D
    burn the compound

  • Sodium metal itself is used as

    A
    oxidising agent
    B
    dehydrating agents
    C
    reducing agent
    D
    bleaching agent

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    In Lassaigne's test the organic compound is fused with Na followed by extraction with distilled water. Which of the following is not possible fusion product?

    In Lassaigne.s test, the reason behind the usage of sodium metal is

    Nitrogen, sulphur and halogens are tested from the sodium fusion extract of the organic compound which is commonly known as Lassaigne.s extract. For preparing Lassaigen.s extract, a small quantity of the organic compound is fused with sodium metal in a fusion tube. The red tube is broken in distilled water, boiled and filtered. This filtrate is known as Lassaigne.s extract or sodium fusion extract. During testing of nitrogen in organic compound by Lassaigne.s test, which of the following compounds are formed i) NaCN ii) Fe_4[Fe(CN)_6]_3 iii) Na_4[Fe(CN)_6] iv) Fe_3[Fe(CN)_6]_4

    Sodium metal in liquid ammonia is

    Nitrogen, sulphur and halogens are tested from the sodium fusion extract of the organic compound which is commonly known as Lassaigne's extract. For preparing Lassaigen's extract, a small quanty of the organic compound is fused with sodium metal in a fusion tube. The red tube is broken in distilled water, boiled and filtered. This filtrate is known as Lassaigne's extract or sdodium fusion extract. In the process of testing elements in Lassaigne's a test, which of the following reactions do not occur.

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