Yes, there are online resources and websites that provide chemistry practice questions for the JEE Main exam. One such website is EduRev.

EduRev:
- EduRev is a popular online platform that offers a wide range of study materials, practice questions, and mock tests for various competitive exams, including JEE Main.
- It provides a comprehensive collection of chemistry practice questions specifically designed to help students prepare for the JEE Main exam.
- The practice questions are categorized based on different topics and subtopics of chemistry, allowing students to focus on specific areas they need to work on.
- The questions are carefully curated by subject experts and are of varying difficulty levels, which helps students to gradually progress and improve their understanding of the subject.
- EduRev also provides detailed solutions and explanations for each practice question, enabling students to learn from their mistakes and clarify any doubts they may have.
- In addition to practice questions, EduRev offers various other features such as video lectures, study notes, previous year question papers, and revision notes, which further enhance the learning experience.
- The platform also allows students to track their progress, set goals, and compete with their peers through leaderboards and challenges, which adds a gamified element to the studying process and keeps students motivated.

Advantages of using EduRev:
- Wide range of practice questions covering all topics of chemistry.
- Questions are categorized based on topics and subtopics for targeted practice.
- Solutions and explanations are provided for each question.
- Additional study materials, video lectures, and revision notes are available.
- Progress tracking and competitive features keep students engaged and motivated.

Conclusion:
EduRev is a reliable and comprehensive online resource that offers chemistry practice questions for the JEE Main exam. Its user-friendly interface, extensive question bank, and additional study materials make it an ideal platform for students preparing for the exam.