What are fats? Name some fat-containing substances.
Updated 1/12/2026
Write test for detecting the presence of starch.
Updated 1/12/2026
Metals have luster (shine). Give reason why some metal articles become dull and lose their shine.
Updated 1/12/2026
Classify the following into slow and fast changes: (i) Spinning of top (ii) Day and night (iii) Formation of curd from milk (iv) Change of season (v) Making curd from milk by adding lemon juice
Updated 1/12/2026
How are some animals adapted to live in desert?
Updated 1/12/2026
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