When a wire of resistance R is cut into three equal parts, each part has resistance R/3. These three parts connected in parallel give an equivalent resistance R₁ = R/9. Hence, the ratio R₁ : R = 1 : 9. Science ...
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The correct option is (C). The correct group is Cuscuta, ticks, lice, leeches, and tapeworm, as all are parasites that depend on other organisms for food. They exhibit the same heterotrophic parasitic mode of nutrition, deriving nourishment directly from their ...
Both A and R are true, and R is the correct explanation of A. Sexual reproduction introduces genetic variations, increasing adaptability to environmental changes. These variations give better chances of survival compared to asexual reproduction. Hence, both assertion and reason ...
The correct option is (b) Colourless. When zinc metal is placed in copper sulphate solution, zinc displaces copper because it is more reactive. The blue colour of copper sulphate fades, turning the solution nearly colourless as zinc sulphate forms. Class 10 ...