Chemical Reactions and Equations is the first chapter of NCERT Class X Science. It covers writing and balancing chemical equations and the main types of reactions: combination, decomposition, displacement, double displacement and redox reactions, along with the everyday effects of oxidation such as corrosion and rancidity. These free MCQ practice tests help you identify reaction types, balance equations and apply the concepts to examples, just as the CBSE board exam expects. Each test is timed, scored instantly and followed by a full answer review.