Correct option – B. When excess CO₂ passes through limewater, the initially formed insoluble calcium carbonate (which causes milkiness) reacts further with CO₂ and water to form soluble calcium bicarbonate, clearing the milkiness from the solution completely. cbse sample paper 2025 ...
Category: Class 10 Science
NCERT Solutions for Class 10 Science and important questions for CBSE class 10 for session 2020-2021
Discussion Forum Latest Questions
Correct option – D. Sodium chloride. When aqueous barium chloride reacts with aqueous sodium sulphate, barium sulphate precipitates and sodium chloride remains in the solution. Thus the aqueous solution formed contains NaCl with BaSO₄ as solid precipitate. cbse sample paper 2025 ...
Correct option – D. Assertion A is false — C4H10 is saturated (alkane) while C4H8 (alkene) and C4H6 (alkyne/diene) are unsaturated. Reason R is true because the listed compounds (except C4H10) are unsaturated, so choose option D. cbse sample paper 2025-26 ...
Yes, the CBSE 2025 Class 10 Science paper is expected to be student-friendly, based on understanding and application skills. With regular practice from Tiwari Academy’s updated notes and sample papers, students can easily secure 95%+ marks confidently.
Yes, CBSE has published the Class 10 Science Sample Paper 2025. Students can download it from CBSE’s official website or Tiwari Academy, which provides free PDFs, detailed solutions, and exam strategies to help students score 95% or higher.