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Q. The acid used in batteries is
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Q. Atoms having the same number of protons but different number of neutrons are called
Q. What is the product formed when sodium bicarbonate is heated strongly -
Q. A dark purple compound used as an antiseptic and disinfectant is
Q. What is the fourth state of matter?
Q. Which of the following is used to increase the anti-knocking property of petrol ?
Q. How many moles are there in 140g of Si (atomic mass of silicon is 28)
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