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Q. Which one of the following is not radioactive
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Q. What is the primary component of natural gas?
Q. The compound dissolved in water to give a solution of pH lower than seven is
Q. Which of the following practices is found in vinegar and pickle?
Q. The carbon-carbon bond length is shortest in
Q. O2 released in the process of photosynthesis comes from
Q. An important green-house gas other than methane being produced from the agricultural fields is
Q. The boiling point of water decreases at higher altitudes is due to
Q. Many marine animals use _______________ dissolved in sea-water to make their shells.
Q. Nitric acid (95%) can be obtained from its dilute solution by
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