Recent questions tagged class 10

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Name the reproductive and non-productive parts of Rhizopus.

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Salts are formed by the neutralisation reaction between an acid and a base. Complete the following table by filling

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Assertion (A): All kitchen waste cannot form compost. Reason (R): Material like milk packets may not be biodegradable.

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Assertion (A): One circuit with 15 A current rating is used for appliances such as geysers and air coolers.

asked Nov 11, 2023 in Science by Priya (31.5k points)

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Assertion (A): A lot of difference in the concentrations of ions was observed by a scientist between the fluid in xylem

asked Nov 10, 2023 in Science by Kabita (5.9k points)

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Assertion (A): Copper ions migrate from the anode to the cathode during electrorefining of copper.

asked Nov 10, 2023 in Science by Kabita (5.9k points)

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The chemicals that are non-degradable, get progressively accumulated at each trophic level, and their concentration is

asked Nov 10, 2023 in Science by Kabita (5.9k points)

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If all the organisms of one trophic level in a food chain die, what would be its impact on the population of organisms

asked Nov 10, 2023 in Science by Kabita (5.9k points)

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For a convex mirror the image distance (v) = 5 cm, focal length (f) = 10 cm and height of the image (h) = 7.5 cm.

asked Nov 10, 2023 in Science by Kabita (5.9k points)

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The light enters from air to glass having refractive index 1.5. The speed of light in glass is

asked Nov 10, 2023 in Science by Kabita (5.9k points)

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During exhalation, the exchange of gases takes place between

asked Nov 9, 2023 in Science by Priya (31.5k points)

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A cross between pure tall and pure short pea plants gives hybrid tall pea plants in the first generation.

asked Nov 9, 2023 in Science by Priya (31.5k points)

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Gastric juice is secreted by gastric glands and contains hydrochloric acid, mucus, and pepsin.

asked Nov 9, 2023 in Science by Priya (31.5k points)

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Which of the following tests is given by the gas ‘X’ produced in the set up shown? (a) Lime water turns milky white

asked Nov 9, 2023 in Science by Priya (31.5k points)

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Which of the following structures correctly represent the electron dot structure of a Nitrogen molecule?

asked Nov 9, 2023 in Science by Priya (31.5k points)

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Which of the following correctly represents ‘X’ in the above chemical changes? (a) Ethane (b) Ethene (c) Ethyne

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The metal X does not react with cold water but floats on hot water with formation of colourless bubbles.

asked Nov 9, 2023 in Science by Priya (31.5k points)

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Washing soda is hydrated a) Sodium hydrogen carbonate b) Sodium carbonate

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The ratio (x:y) of reactants Fe and H2O in the given balanced chemical equation is xFe(s) + yH2O(g) → Fe3O4 (s)

asked Nov 9, 2023 in Science by Priya (31.5k points)

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Which of the following observations is correct for the above given experimental diagram?

asked Nov 9, 2023 in Science by Priya (31.5k points)

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