सीसा पेन्सिल में प्रयुक्त – McqOptions

MCQOPTIONS

1.	सीसा पेन्सिल में प्रयुक्त तत्व है -
A.	जिंक
B.	सीसा
C.	कार्बन
D.	टिन
Answer» D. टिन

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