Which one of the following is not correctly matched? Pollutant – Disease caused

Which of the following pairs (Disease - Pollution) is not correctly matched?

Which one of the following is the main reason of acid rains?

Which one of the following is related to global dimming?

The use of plastics has led to a number of environment-related problems. For this, which one of the following statements is correct?

The leakage of which of the following gases caused the Bhopal Gas Tragedy in 1984?