General Knowledge :: Chemistry
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The method that cannot be used for removing permanent hardness of water is
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The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?
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The gas used for artificial ripening of green fruit is
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The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is
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The molecule which has the highest percentage of ionic character among the following is
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The high reactivity of fluorine is due to
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