A mixture of mercurous and mercuric nitrates is added to a food substance. A white precipitates is formed which on gentle heating turns red. The food substance is

Fr3nchman123

1 year ago

This is millons test ohh, the one for protein

okekeephraim1

1 year ago

xanthoproteic test

Sammyporsche123

2 years ago

correct

Idowu24

1 year ago

The test described here is not the xanthoproteic test. The xanthoproteic test involves adding concentrated nitric acid to proteins, where the aromatic rings in the amino acids are nitrated to produce a yellow color, indicating the presence of protein.

In contrast, the test using a mixture of mercurous and mercuric nitrates is designed for fats. In this test, when the reagent is added to a fat-containing substance, a white precipitate forms which, upon gentle heating, turns red due to the formation of mercury(II) oxide. This confirms that the substance tested is fat.

Thus, the correct answer is D. Fat