Arsenic-containing compounds are used in the treatment of ...... .

Given below are two statements:
Statement $I$: Penicillin is a bacteriostatic type of antibiotic.
Statement $II$: The general structure of Penicillin is as shown below:
$R-CONH-CH-CH-S-C(CH_3)_2-CH-COOH$ (with a $\beta$-lactam ring fused to a thiazolidine ring).
Choose the correct option:

$A$ chemical which stimulates the secretion of pepsin is ....

Which of the following artificial sweeteners has the highest sweetness value in comparison to cane sugar?

Which artificial sweetener contains chlorine,tastes like sucrose,and is stable at cooking temperatures?

Which of the following statements are true for saccharin?
$(A)$ It is a sodium salt and is not soluble in water.
$(B)$ It is much sweeter than cane sugar.
$(C)$ It is of great value for diabetic patients and is excreted as such in urine.
$(D)$ It is harmful.