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Q. Chocolates can be bad for health because of a high content of
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Q. The main purification/separation procedure used in petroleum industry is
Q. The nitrogen atom has 7 protons and 7 electrons,The nitride ion will have
Q. Which of the following is known as carbolic acid
Q. Which one of the following elements is an example of noble gas ?
Q. The element present in the largest amount in rocks and minerals is
Q. Bleaching Powder is a compound of _______.
Q. The micro-nutrients provided by inorganic fertilisers are
Q. If there is one million Mg2+ ions in MgCl2, how many chloride ions are there
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