Fluorides of carbon is the major pollutant from jet plane emission.

Correct Option: D

Fluorides of carbon is the major pollutant from jet plane emission.

NO₂ and SO₂ after reacting with water in atmosphere produce HNO₃ & H₂SO₄ which falls down as acid rain.

Correct Option: A

NO₂ and SO₂ after reacting with water in atmosphere produce HNO₃ & H₂SO₄ which falls down as acid rain.

CO₂ in its normal fraction in air (about 0.03%) is actually not a pollutant but above this it is considered as a pollutant. At the elevated level it becomes a cause for global warming.

Correct Option: B

CO₂ in its normal fraction in air (about 0.03%) is actually not a pollutant but above this it is considered as a pollutant. At the elevated level it becomes a cause for global warming.

The Taj Mahal is threatened by environmental pollution, especially by acid rain due to sulphur dioxide emitted from Mathura refinery.

Correct Option: D

The Taj Mahal is threatened by environmental pollution, especially by acid rain due to sulphur dioxide emitted from Mathura refinery.

Carbon monoxide, when inhaled, combines with blood haemoglobin to form carboxy-haemoglobin at a rate 210 times faster than the rate at which oxygen forms oxyhaemoglobin. Thus, respiration is impaired.

Correct Option: B

Carbon monoxide, when inhaled, combines with blood haemoglobin to form carboxy-haemoglobin at a rate 210 times faster than the rate at which oxygen forms oxyhaemoglobin. Thus, respiration is impaired.