Which of the following is used for disinfecting drinking water?
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Which of the following metals is a liquid at room temperature?
Acid Rain has pH value of
15% of an alloy was silver. If in a quantity of alloy there was 51 g of silver, what was the quantity of the other elements in the alloy?
Which of the following is called Aurum?
Atomic mass of Nitrogen is 14 and that of Hydrogen is 1. What will be the molecular mass of Ammonia?
Which among the following is called quicksilver?
Except Helium, all noble gases have how many electrons in the outermost shell?
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