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Q. Galena is a mineral of
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Q. All the following are examples of chemical change, except
Q. Which of the following type of fire extinguisher is used for petroleum fire
Q. The richest source of vitamin D is?
Q. Which of the following one of the following is a greenhouse gas
Q. For transfusion, the O blood group of a Donor can be accepted by a person having blood group
Q. Which of the following causes more burn?
Q. Which of the following one of the following minerals is found in pure form
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