Which vegetable crop,released by $IARI$ New Delhi,is enriched with Vitamin $C$?

What is the current through an ideal $P-N$ junction diode shown in the figure below? (in $mA$)

$\int \frac{dx}{1-\cos x-\sin x}$ is equal to

Identify the reagent used in the following reaction.
Benzoic acid $\stackrel{\text{Reagent}}{\Delta}$ Benzoyl chloride + Phosphorous oxychloride + Hydrogen chloride

In a meter bridge,the null point is found at a distance of $25\, cm$ from $A$. If now a resistance of $10\,\Omega$ is connected in parallel with $S$,the null point occurs at the midpoint of $AB$. The value of $R$ is .............. $\Omega$. (in $.67$)

What is the catalyst used in the conversion of acetaldehyde to acetic acid?