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Write Faraday’s laws of electromagnetic induction. Mention one advantage of using a LED lamp over an incandescent lamp. [2 + 1]
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Two metallic wires A and B of the same length are made of the same material. The radius of wire A is…
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Write one use of each of the x-ray and ϒ-ray. Mention one harmful effect of γ-ray.
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In the case of refraction if the angle of incidence is 45° and the refracted ray makes an angle of 60° with…
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Define the coefficient of volume expansion of a solid and write its mathematical form. [1 + 2] OR Give one example of…
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On burning sulfur in oxygen, sulfur dioxide is produced S + O2 → SO2 For producing 2240 L of SO2 at STP…
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What is an ideal gas? What is the effect of the increase in temperature on the pressure of a gas kept in…
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How is polyethene produced by the polymerisation reaction of ethylene? OR How can the following conversion be carried out? HC = CH…
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In the extraction of metal by the process of electrolysis at which electrode does the following reaction occur ? M+ + e−…
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Write, with the balanced chemical equation, what happens when H2S gas is passed through an aqueous solution of Pb(NO3)2.
