I would recommend errorless physics n errorless chemistry...bcoz they hav all different model questions frm various exams..all imp. models...will help u a lot..fr bio u need to study textbook n exampler....u can go with any other good material fr it...

Best Books for Physics MCQs:

1. "Concepts of Physics" by H.C. Verma: This book is highly recommended for physics MCQs. It covers a wide range of topics and provides a comprehensive understanding of the subject. The book presents concepts in a clear and concise manner, making it easier to grasp and solve MCQs.

2. "Understanding Physics" by D.C. Pandey: This book is another excellent resource for physics MCQs. It is known for its extensive collection of questions from various competitive exams. The book includes detailed explanations and solutions, helping students develop problem-solving skills.

3. "Objective Physics" by Pramod Agarwal: This book is specifically designed for students preparing for competitive exams. It covers all the essential topics in physics and includes a large number of MCQs with detailed explanations. The book also provides practice sets and previous years' question papers.

Best Books for Chemistry MCQs:

1. "Concise Inorganic Chemistry" by J.D. Lee: This book is highly recommended for inorganic chemistry MCQs. It covers all the important concepts and includes a wide range of MCQs from various competitive exams. The book also provides detailed explanations and diagrams for better understanding.

2. "Organic Chemistry" by Morrison and Boyd: This book is considered a classic in organic chemistry. It offers a comprehensive coverage of the subject and includes a large number of MCQs, which are helpful for practicing and improving problem-solving skills. The book also provides clear explanations and mechanisms for reactions.

3. "Physical Chemistry" by P. Bahadur: This book is widely used for physical chemistry MCQs. It covers all the major topics and provides a large number of MCQs for practice. The book also includes detailed explanations and step-by-step solutions for better comprehension.

Best Books for Biology MCQs:

1. "Objective Biology" by Dinesh: This book is highly recommended for biology MCQs. It covers all the important topics and includes a vast collection of MCQs from various competitive exams. The book provides detailed explanations and diagrams to enhance understanding.

2. "NCERT Exemplar Problems: Biology": This book, published by NCERT, is an excellent resource for biology MCQs. It includes a variety of challenging questions that test conceptual understanding. The book also provides detailed explanations and solutions.

3. "Biology" by Pradeep Publications: This book is widely used for biology MCQs. It covers all the essential topics and includes a large number of MCQs for practice. The book also provides concise explanations and important diagrams to aid learning.

Remember, while these books are recommended for MCQ practice, it is also crucial to refer to textbooks and study materials for a comprehensive understanding of the subjects. Regular practice and revision are key to achieving success in these exams.