पर्यावरण रसायन विज्ञान प्रश्न 1
प्रश्न: निम्नलिखित में से कौन-सा एक संश्लेषित रेशा नहीं है:
विकल्प:
A) अंगोरा
B) रेयॉन
C) नायलॉन
D) पॉलिएस्टर
Show Answer
उत्तर:
सही उत्तर: A
BETA
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