When an iron nail gets rusted, iron oxide is formed
without any change in the weight of the nail
with decrease in the weight of the nail
with increase in the weight of the nail
without any change in colour or weight of the nail
When an iron nail gets rusted, iron oxide is formed
Galvanised iron sheets have a coating of |
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Among the various allotropes of carbon, |
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The group of metals Fe, Co, Ni may best called as |
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Heavy water is |
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The chemical (ethyl mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of |
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The element common to all acids is |
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Non stick cooking utensils are coated with |
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Monazite is an ore of |
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Carbon, diamond and graphite are together called |
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Potassium nitrate is used in |
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