Question

The sodium extract of an organic compound on acidification with acetic acid and addition of lead acetate solution gives a black precipitate. The organic compound contains?

• A. nitrogen
• B. halogen
• C. phosphorus
• D. sulphur

Hint:

The formation of a black precipitate with lead acetate indicates the presence of phosphorus in the organic compound.

Answer 1

The Correct Option is C

The formation of a black precipitate when lead acetate is added to the sodium extract of an organic compound indicates the presence of phosphorus, which forms lead phosphate under these conditions.