The artificial sweetener stable at cooking temperature and does not provide calories is

Given below are two statements,one is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$: Butylated hydroxy anisole when added to butter increases its shelf life.
Reason $R$: Butylated hydroxy anisole is more reactive towards oxygen than food.
In the light of the above statements,choose the most appropriate answer from the options given below:

Which of the following is synthetically modified to obtain $Amoxicillin$?

What does a biodegradable detergent structurally contain?

Match List-$I$ with List-$II$.

List-$I$ (Antimicrobials)	List-$II$ (Names)
$A$. Narrow spectrum antibiotic	$I$. Furacin
$B$. Antiseptic	$II$. Sulphur dioxide
$C$. Disinfectants	$III$. Penicillin-$G$
$D$. Broad spectrum antibiotic	$IV$. Chloramphenicol

Barbiturates are hypnotic agents. Veronal is a derivative of barbituric acid. It can be synthesized by the following sequence,then the structure of veronal $(P)$ is :
$CH_2(CO_2Et)_2$ $\xrightarrow[EtI]{EtO^-}$ $\xrightarrow[EtI]{EtO^-}$ $\xrightarrow{Urea}$ $(P)$