In which of the following activities silicon carbide is used?
Making cement and glass
Disinfecting water of ponds
cutting very hard substances
Making casts for statues
In which of the following activities silicon carbide is used?
The average salinity of sea water is |
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When an iron nail gets rusted, iron oxide is formed |
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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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