The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is
Argon
Xenon
Helium
Krypton
The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is
The gases used in different types of welding would include |
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The property of a substance to absorb moisture from the air on exposure is called |
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In which of the following activities silicon carbide is used? |
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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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