The correct option is (c) scattering of light. When sunlight enters the atmosphere, fine particles like dust and gases scatter the light in all directions. This scattering makes the sky appear blue and causes reddish sunsets. CBSE Class 10 Science Question ...
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The correct answer is option (d) III and IV. Myopia occurs when the focal length of the eye lens is too short or the eyeball is elongated, causing the image to form in front of the retina. class 10 science half ...
(I) Combustion: C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O (II) Dehydration: C₂H₅OH →[conc. H₂SO₄, 443 K] C₂H₄ + H₂O (III) Oxidation: C₂H₅OH + [O] → CH₃CHO + H₂O (using acidified K₂Cr₂O₇) CBSE Sample Paper Class 10 Science 2025-26 Tiwari Academy provides CBSE Class 10 ...
The correct option is [C]. When zinc granules react with sulphuric acid (X), zinc sulphate (ZnSO₄) forms and hydrogen gas (Y) is released. The hydrogen gas burns with a pop sound near a candle, confirming its identity. Tiwari Academy provides CBSE ...
Acidity or indigestion in adults is mainly caused by irregular eating habits, overeating, or consumption of spicy, oily food. These disturb acid secretion in the stomach, leading to excess acid, heartburn, discomfort and improper digestion. Tiwari Academy provides CBSE Class 10 ...