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Q. TEL minimise the knocking effect when mixed with petrol, it acts as_
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Q. Anaemic patients are deficient in
Q. Most of the explosions in mines occur due to the mixing of
Q. In which of the following is citric acid present?
Q. The most commonly used chemicals in the artificial rainmaking or cloud seeding are
Q. The number of g-molecule of oxygen in 6.02 x 10^24 CO molecules is
Q. A substance mixed with metals to promote fusion (melting) is called
Q. The gas used to extinguish fire is
Q. Identify the natural indicator.
Q. Which variety of coal contains recognisable traces of the original plant material ?
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