हवा में तैरते हुए श्वसनीय � – McqOptions

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1.	हवा में तैरते हुए श्वसनीय सूक्ष्म कणों का आकार होता है -
A.	7 माइक्रोन से अधिक
B.	6 माइक्रोन से अधिक
C.	5 माइक्रोन से अधिक
D.	5 माइक्रोन से कम
Answer» E.

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