[" The test for unsaturation is confirmed by "],[" the decolourisation of which of the "],[" following? "]

Explain a test for unsaturation.

Baeyer's reagent decolourises which of the following :

a. c. Tetrachloroethene does not give the test for unsaturation , i.e., it does not decolourise Br_(2) water solution. Explain why

The test that confirms HIV positive is…

Typhoid fever can be confirmed by __ test.

The tests that confirms the presence the aldehydic group is