Question

डीपीएच ऑफिशियल इज वन द अमाउंट ऑफ इंडिया वेयर इज टू बी आर डेट 200 एमएल ऑफ सर्च एचसीएल सॉल्यूशन टो गेट पीएफ ऑफिस​

Answer 1

$\rm\huge\underline{Answer}$

the branch of science concerned with the substances of which matter is composed, the investigation of their properties and reactions, and the use of such reactions to form new substances.