Match the Column I with Column II and choose the correct option from the codes given below : Column I Column II A. SO2 B. NO2 C. CO 1. Binds with haemoglobin 2. Leads to stiffness of flower Buds 3. Irritant red haze in the traffic Codes A B C

CO is a primary air pollutants. It binds with haemoglobin to form stable complex carboxyhaemoglobin. So, that CO is highly poisonous to living beings. The irritant red haze in the traffic and congested place is due to oxides of nitrogen (brown air effect). SO2 causes irritation to the eyes resulting in tear redness, high concentration of SO2 leads to stiffness of flower buds.