इनडोर वायु प्रदूषण का एक ब� – McqOptions

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1.	इनडोर वायु प्रदूषण का एक बड़ा सौदा से आता है
A.	कीचड़
B.	कार्बन मोनोऑक्साइड
C.	खाना बनाना
D.	कालीन और फर्नीचर
Answer» B. कार्बन मोनोऑक्साइड

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