Strategies for solving questions related to redox reactions and electrochemistry in the chemistry section of the JEE Main exam:

1. Understand the basics:
- Ensure that you have a strong understanding of the basic concepts of redox reactions and electrochemistry, including oxidation and reduction, oxidation numbers, balancing equations, and standard electrode potentials.
- Review the concepts of oxidation states, half-reactions, and the rules for assigning oxidation numbers to different elements.

2. Balance the redox equation:
- Start by balancing the redox equation using the half-reaction method or the ion-electron method.
- Break the reaction into two half-reactions, one for the oxidation process and the other for the reduction process.
- Balance the atoms and charges in each half-reaction by adding electrons.
- Make sure that the total number of electrons lost in the oxidation half-reaction is equal to the total number of electrons gained in the reduction half-reaction.

3. Determine the oxidation number changes:
- Identify the elements that undergo oxidation and reduction in the reaction.
- Determine the change in oxidation number for each element by comparing their initial and final states.
- Remember that an increase in oxidation number indicates oxidation, while a decrease indicates reduction.

4. Calculate the number of moles and equivalents:
- Convert the given quantities (mass, volume, concentration, etc.) to the number of moles using the appropriate conversion factors.
- Determine the number of equivalents for each species by considering their oxidation numbers and stoichiometry.

5. Apply the concept of Faraday's laws of electrolysis:
- Understand the relationship between the amount of substance involved in an electrochemical reaction and the quantity of electricity passed through the cell.
- Use Faraday's laws to calculate the amount of substance deposited or evolved at an electrode during electrolysis.

6. Understand the concept of standard electrode potentials:
- Familiarize yourself with the concept of standard electrode potentials (E°) and how they can be used to predict the feasibility and direction of a redox reaction.
- Use the standard electrode potentials to compare the reactivity of different species and determine the direction of electron flow.

7. Practice with past papers and mock tests:
- Solve a variety of practice questions, past papers, and mock tests to gain familiarity with the types of questions asked in the JEE Main exam.
- Pay attention to the specific concepts and problem-solving techniques required for redox reactions and electrochemistry.

Remember to practice regularly, review the concepts thoroughly, and seek clarification for any doubts or difficulties you may have. Developing a strong understanding of the fundamentals and practicing solving different types of problems will help you excel in the redox reactions and electrochemistry section of the JEE Main exam.