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Q. The substance made of pure carbon is
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Q. The gas inside an electric bulb is
Q. Which of the following is the strongest acid?
Q. A common fluorescent tube contains
Q. The most electropositive elements among the following is
Q. Which of the following is NOT correct about Group 14 elements?
Q. Acetyl salicyclic acid is commonly used as
Q. The most abundant rare gas in the atmosphere is
Q. Which among the given is usually not an air-pollutant
Q. The pH value of 12 is of an aqueous solution of
Q. .......... element has two orbits that are completely filled.
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