Seliwanoff test and Xanthoproteic test are used for the identification of $....$ and $....$ respectively.

Which of the following matches is wrong?

Which of the following bacteria are responsible for intestinal inflammation and urinary tract infections?

Acquired immune deficiency syndrome $(AIDS)$ is characterized by:

The structure of the hormone thyroxine is given below. The percentage of iodine in thyroxine is $..........\%$. ($nearest$ $integer$)
($Given$ $molar$ $mass$ $in$ $g \ mol^{-1}: C: 12, H: 1, O: 16, N: 14, I: 127$)

The number of six-membered and five-membered rings present in norethindrone (a synthetic progesterone) are respectively: