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Class 10 · Science · Medium
→Fading of the blue colour of copper sulphate is related to which ionic change?
Class 10 · Science · Medium
→Why does copper deposit when an iron nail is placed in copper sulphate solution?
Class 10 · Science · Medium
→What causes the green solution when an iron nail is placed in copper sulphate solution?
Class 10 · Science · Medium
→On what basis is the difference between thermal decomposition and electrolytic decomposition most clearly identified?
Class 10 · Science · Medium
→What is the main purpose of adding a little acid during electrolysis of water?
Class 10 · Science · Expert
→At which electrode is the gas with greater volume obtained during electrolysis of water?
Class 10 · Science · Medium
→What is the identity of the gas formed at the anode during electrolysis of water?
Class 10 · Science · Medium
→In electrolysis of water, if hydrogen is thirty-six millilitres, what will be the expected volume of oxygen?
Class 10 · Science · Medium
→What is the most suitable reason for storing silver salts in dark coloured bottles?
Class 10 · Science · Medium
→Sensitivity of silver bromide to light is related to which use?
Class 10 · Science · Medium
→Why does grey colour appear when silver chloride is kept in light?
Class 10 · Science · Medium
→Why is it wrong to consider the brown gas in lead nitrate experiment as oxygen?
Class 10 · Science · Medium
→In thermal decomposition of lead nitrate the yellow solid residue is of which substance?
Class 10 · Science · Medium
→What is the correct set of brown gas and colourless gas formed on heating lead nitrate?
Class 10 · Science · Medium
→Turning lime water milky is a strong experimental indication for which gas?
Class 10 · Science · Medium
→Which is the correct pair of solid residue and gas in decomposition of calcium carbonate?
Class 10 · Science · Medium
→When calcium carbonate is heated a solid and a gas are formed. What type of reaction is this?
Class 10 · Science · Medium
→What are the product and energy change when water is added to calcium oxide?
Class 10 · Science · Medium
→How is burning of magnesium both combination and oxidation at the same time?
Class 10 · Science · Medium
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