Subject :NSO Class : Class 5
Subject :NSO Class : Class 8
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Subject :NSO Class : Class 8
Ans 1:
Class : Class 8
Coal is a fuel with high carbon content derived from destructive distillation of coal.
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Subject :NSO Class : Class 8
Ans 1:
Class : Class 8
The correct option is D.
Because if you see the reactivity table copper is placed below hydrogen.So it is not more reactive than hydrogen and cannot replace it from its compound.
Ans 2:
Class : Class 6
correct answer is D because in the reactivity series,copper lies below hydrogen which means that hydrogen cannot be displaced by copper from its salt solution.
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Subject :NSO Class : Class 7
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Subject :NSO Class : Class 7
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Subject :NSO Class : Class 5
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Subject :NSO Class : Class 5
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Subject :NSO Class : Class 8
Ans 1:
Class : Class 8
The use of electroplating is more widely seen in industries than electrolysis.
Actually,decomposition of water is not so much required in industries than plating of metals.
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Subject :NSO Class : Class 7
