Question

which one of the following is not properly matched?​

Answer 1

Answer:

Which of the following is not properly matched?

AFormaldehyde- Carcinogenic

BSulphur dioxide - Respiratory problems

CNitrogen oxide - Brown air

DMean annual temperature -25 oC

EPhotochemical smog - Grey air

ANSWER

Mean annual temperature is calculated by subtracting the lowest recorded temperature from the highest recorded temperature of the of the day. It can vary depending on the weather and climate of an area.

A. Formaldehyde has been classified as cancer causing agent by the EPA. It has shown leukaemia incidences.

B. Sulphur dioxide is responsible for the respiratory tract diseases like asthma, bronchitis etc.

C. Nitrogen oxide is called the brown air because of the change in frequencies of absorption of light when nitrogen combines with the oxygen.

D. Mean annual temperature can vary depending on the weather and climatic conditions.

E. Photochemical smog forms grey air due to the formation of ozone and PAN that decreases the visibility.

Hence, the correct answer is 'Mean annual temperature - 25 c

Answer 2

Answer:

Option c is not properly matched.

Explanation:

• The mean annual temperature is calculated by subtracting the day's lowest recorded temperature from its highest recorded temperature. It varies according to the weather and climate of the area.
• A. The EPA has classified formaldehyde as a cancer-causing agent. It has revealed leukemia incidences.
• B. Sulphur dioxide causes respiratory tract diseases such as asthma and bronchitis.
• C. Nitrogen oxide is known as brown air because of the change in light absorption frequencies that occurs when nitrogen combines with oxygen.
• D. The mean annual temperature varies according to the weather and climatic conditions.
• E. Photochemical smog causes grey air to form as a result of the formation of ozone and PAN, reducing visibility.
• Hence, the correct answer for option C is 'Mean annual temperature - 25.

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