Q. How many groups and periods are present in the Modern Periodic Table?
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Q. The boiling point of water decreases at higher altitudes is due to
Q. Which of the following substances is added to soap to make it antiseptic?
Q. Which of the following types of Noble gas is used for unconsciousness?
Q. A device used for the measurement of radioactivity is
Q. Chernobyl disaster is the result of pollution by
Q. Which one is the purest form of carbon?
Q. In the manufacturing of bread, the dough rises because of
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