Q. With reference to the Periyar Tiger Reserve, consider the following statements:
1.It lies in the mountainous area of the Nilgiri Hills.
2.Pamba Rivers originate in the forests of the reserve.
3.Tropical evergreen forests are found in the reserve.
Which of the statements given above are correct?

[A] 1 and 2 only

[B] 2 and 3 only

[C] 1 and 3 only

[D] 1, 2 and 3

Answer: B

Explanation –

Statement 1, 2 and 3 are correct. Nitrate radical is an oxide of nitrogen that consists of three oxygen atoms bound to a nitrogen atom. The production of nitrate radicals could increase the amount ozone and PM2.5 fine particulate matter in the atmosphere. While cities in Europe and the United States have experienced a decline in the nocturnal production of nitrate radicals, parts of China and India have experienced a rapid increase.

Source: The Indian Express