Which among the following substances is used as a lubricant?
What does airbag, used for safety of car driver, contain? |
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The uranium fuel used worldwide is mainly in the form of |
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Chlorination is a process used for water purification. The disinfecting action of chlorine is mainly due to |
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Chemically, bleaching powder is |
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Consider the following: |
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The function of heavy water in a nuclear reactor is to |
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Which of the following materials is used along with iron ore and limestone to produce iron in a modern blast furnace? |
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Nitrous oxide, commonly called laughing gas, has been a matter of concern to environmentalists recently because: |
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The radioactive element most commonly detected in humans is |
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Radioisotopes which are used in medical diagnosis are known as |
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