Correct option – B (I and III). Aluminium oxide and zinc oxide are amphoteric and react with both dilute HCl and aqueous NaOH. Calcium oxide is basic (reacts with acid) and SO₂ is acidic (reacts with base). cbse sample paper 2025 ...
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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.
The Central Board of Secondary Education has released the CBSE Sample Paper 2025-26 Class 10 for all subjects on 16th September 2024. These newly released sample papers are available here in PDF for free of cost. Visit Tiwari Academy and ...
(i) Fish: Two-chambered heart; oxygenated and deoxygenated blood mix before reaching tissues. (ii) Humans: Four-chambered heart prevents mixing, ensuring separate circulation of oxygenated and deoxygenated blood for efficient oxygen supply. cbse sample paper 2025 cbse sample paper 2025-26 class 10 science