स्मॉग किसके द्वारा बनता है – McqOptions

MCQOPTIONS

1.	स्मॉग किसके द्वारा बनता है
A.	धुआं और कोहरा
B.	वाष्प का संघनन
C.	कोहरा और NOZ
D.	smoke and CO2
Answer» B. वाष्प का संघनन

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