Chemistry - Single MCQs (Page 66)

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Q651. Which is the principal ore of Mercury ?...Q652. What is aquaphobia, also referred as hydrophobia, the fear of ?...Q653. Which organism is responsible for alcohol fermentation?...Q654. As which one of the following does carbon occur in its purest form in nature?...Q655. What type of reaction is carried out by the lipase in the digestion of fats ?...Q656. What is the pH of pure water ?...Q657. Several blocks of the megnesium are fixed to the bottom of a ship to ?...Q658. What is jeweler's rouge ?...Q659. Out of 92 naturally occurring chemical elements how many are considered as bio?...Q660. What is the chemical symbol for Copper?...