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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The Swaraj Party was formed in 1923 by Motilal Nehru and C.R. Das to return to council politics. They aimed to enter legislative councils to oppose British policies from within and demand greater self-governance for Indians. Correct option – B. cbse ...
(B) Eggs contain fats. Bile from the liver emulsifies fats into small droplets, and pancreatic lipase digests them. (C) Sweet potatoes contain starch. Salivary amylase in saliva begins starch digestion in the mouth. (D) The small intestine contains maximum digested ...
(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
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