निम्नलिखित में से किसमें न – McqOptions

MCQOPTIONS

1.	निम्नलिखित में से किसमें न्यूट्रॉन अनुपस्थित होता है -
A.	हीलियम
B.	हाइड्रोजन
C.	ऑक्सीजन
D.	बेरीलियम
Answer» C. ऑक्सीजन

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