# Environmental Issues

Subject matter experts of JagranJosh have developed chapter wise practice questions of Class 12th as per the relevancy of the chapter in the CBSE board exam. This practice set contains 15 questions with detailed explanations on “Chapter: Environmental Issues” of Biology.

• Q1.The air pollutant is:

• Q2.PAN is a result of the pollutant:

• Q3.BOD is a measure of:

• Q4.Loss of ozone in the stratosphere will cause:

• Q5.The pollutant that reacts with haemoglobin is: