Yes, you can expect questions from environmental chemistry and pollution control in the chemistry section of the JEE Main exam. These topics are important as they focus on the application of chemistry principles in understanding and solving environmental issues. Here is a detailed explanation of these topics and their relevance to the JEE Main exam:

Environmental Chemistry:
- Environmental chemistry is the study of chemical processes occurring in the environment, including air, water, and soil.
- It deals with the sources, reactions, transport, effects, and fates of chemicals in the environment.
- Questions related to environmental chemistry in the JEE Main exam may cover topics such as environmental pollution, atmospheric chemistry, water pollution, and soil pollution.
- Key concepts to be familiar with include the greenhouse effect, acid rain, ozone depletion, and eutrophication.

Pollution Control:
- Pollution control refers to the measures taken to minimize or eliminate the release of pollutants into the environment.
- It involves the study of various techniques and strategies to reduce pollution and protect the environment.
- Questions on pollution control in the JEE Main exam may focus on topics such as air pollution control, water pollution control, and waste management.
- Familiarity with techniques such as electrostatic precipitators, scrubbers, catalytic converters, and wastewater treatment methods is important.

Relevance to JEE Main:
- Environmental chemistry and pollution control are important topics in the JEE Main exam as they test the application of chemistry concepts in real-world scenarios.
- These topics are relevant to the field of chemical engineering, environmental science, and other related disciplines.
- Understanding these topics will help students develop an awareness of the environmental issues and the role of chemistry in addressing them.
- Questions from environmental chemistry and pollution control may appear in both the theoretical and numerical sections of the chemistry paper.
- It is advisable to study these topics thoroughly and practice solving relevant questions to increase your chances of scoring well in the JEE Main exam.

In conclusion, environmental chemistry and pollution control are important topics that can be expected in the chemistry section of the JEE Main exam. Familiarity with the concepts, principles, and techniques related to these topics will help you answer questions accurately and score well in the exam.