MCQ
नाइलॉन का सर्वप्रथम निर्माण किया गया
  • A
    सन् $1920$ में
  • B
    सन् $1925$ में
  • सन् $1931$ में
  • D
    सन् $1940$ में

Answer

Correct option: C.
सन् $1931$ में

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