CBSE Class 10 Science Sample Paper 2024

The colour of the solution observed after 30 minutes of placing zinc metal to copper sulphate solution is (a) Blue (b) Colourless (c) Dirty green (d) Reddish Brown

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Mild non-corrosive basic salt is (a) Ca (OH)2 (b) NaCl (c) NaOH (d) NaHCO3

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An element with atomic number_____ will form a basic oxide. (a) 7 (2,5) (b) 17 (2,8,7) (c) 14 (2,8,4) (d) 11 (2,8,1)

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An element ‘M' has 50% of the electrons filled in the 3rd shell as in the 2nd shell. The atomic number of ‘M’ is: (a) 10 (b) 12 (c) 14 (d) 18

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Generally food is broken and absorbed within the body of organisms. In which of the following organisms is it done outside the body? (a) Amoeba (b) Mushroom (c) Paramoecium (d) Lice

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Receptors are usually located in sense organs. Gustatory receptors are present in (a) tongue (b) nose (c) eye (d) ear

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Height of a plant is regulated by: (a) DNA which is directly influenced by growth hormone. (b) Genes which regulate the proteins directly. (c) Growth hormones under the influence of the enzymes coded by a gene. (d) Growth hormones directly under the influence a gene.

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A sportsman, after a long break of his routine exercise, suffered muscular cramps during a heavy exercise session. This happened due to: (a) lack of carbon dioxide and formation of pyruvate. (b) presence of oxygen and formation of ethanol. (c) lack of oxygen and formation of lactic acid. (d) lack of oxygen and formation of carbon dioxide.

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