The hardest natural substance is
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What product is formed when electricity is passed through an aqueous solution of sodium chloride?
The number of valence electrons in an atom of Phosphorous is
___ is used as a stabilizer in ice cream.
Which of the following statements is wrong with regard to strong acids?
Which of the following solutions is the most acidic among them all?
Which of the following is not correct with reference to Bio-sand Water Filter?
Which of the following type of medicine is used to treat indigestion?