Chemistry
Which of the following is used as a food preservative?
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Chemical name of laughing gas is:
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Which one of the following elements is found common in glass, cement, china clay and quartz?
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Which of the following will you use to remove rust stains on cloth?
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Which of the following is an alloy?
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Which of the following is the lightest substance known?
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Ordinary table salt is sodium chloride, what is baking soda?
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Bauxite is an ore of:
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In process of sublimation:
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