मानव शरीर कई रासायनिक तत्व – McqOptions

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1.	मानव शरीर कई रासायनिक तत्वों से बना है; शरीर में उच्चतम अनुपात (65%) में मौजूद तत्व है
A.	कार्बन
B.	हाइड्रोजन
C.	ऑक्सीजन
D.	नाइट्रोजन
Answer» B. हाइड्रोजन

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