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प्रश्न
Complete the given table:
| Name of polluting gas | Source | Effect |
| ____________ | ____________ | Combining with haemoglobin and causing respiratory problems |
| NO2 | Chemical industries | ____________ |
| CO2 | ____________ | ____________ |
| ____________ | Biogas plants | Greenhouse effect |
रिकाम्या जागा भरा
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उत्तर
| Name of polluting gas | Source | Effect |
| CO | Vehicular exhaust | Combining with haemoglobin and causing respiratory problems |
| NO2 | Chemical industries | Irritation to lungs and eyes |
| CO2 | Combustion of any kind | Greenhouse effect |
| CH4 | Biogas plants | Greenhouse effect |
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