Bromine is a
black solid
red liquid
colourless gas
highly inflammable gas
Bromine is a
The hardest substance available on earth is |
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The variety of coal in which the deposit contains recognisable traces of the original plant material is |
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Tetraethyl lead is used as |
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Which of the following is used as a lubricant? |
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The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is |
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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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