Biology MCQs play an important role in Class XII exam preparation as they help students revise concepts quickly and effectively. Regular practice improves accuracy, speed, and confidence in solving objective questions. Chapterwise MCQs based on Previous Year Questions (PYQs) focus on important and frequently asked topics from the NCERT syllabus. They help students understand exam trends and key concepts.

Prepare smartly for Class XII Chemistry with chapterwise MCQs carefully designed from previous years’ questions. This Part-01 series strengthens concepts, boosts exam confidence, and sharpens accuracy through focused practice. Ideal for CBSE aspirants seeking systematic revision, quick assessment, and score-improving strategies in chemistry for competitive exams, tests, and board success.

Name Reactions - Carbonyl Compounds (Aldehyde, Ketones and Carboxylic Acid) Important Name Reactions of Carbonyl Compounds (a) Rosenmund...

Name Reactions - Alcohols, Phenols and Ethers (a) Kolbe’s reaction: When sodium phenoxide is heated with CO2 at 400 K under a pressure...

(i) Sandmeyer’s Reaction - Benzene diazonium chloride is converted to chlorobenzene, bromobenzene, cyanobenzene on treatment with CuCl/HCl, CuBr/HBr and CuCN/KCN, respectively. (ii) Finkelstein Reaction - Chloroalkanes or bromoalkanes are converted into corresponding iodoalkanes by treating with sodium iodide dissolved in acetone. (iii) Wurtz Reaction - Alkyl halides react with metallic sodium in the presence of dry ether to form alkanes. This reaction is used for the prep