The correct option is (D). Tamil Nadu was the first Indian state to make rooftop rainwater harvesting compulsory. This initiative ensures efficient water use, replenishes groundwater levels, reduces water scarcity, and encourages every household to contribute to sustainable water management. cbse ...
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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.
Salt became a symbol of unity and defiance because it was an essential commodity used by all, rich or poor. Gandhiji chose it to represent equality and to protest the unjust salt tax imposed by the British government. cbse sample paper ...