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Q. How many neutrons does iron have?
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Q. The coloured discharge tubes for advertisement mainly contain
Q. Thermal electricity is generated by using which of these ?
Q. Excessive consumption of ethanol causes damage of
Q. Vinegar made by fermentation from cane sugar contains
Q. The compound(s) produced during the formation of photochemical smog is/are:
Q. Modern periodic table is based on .......... ?
Q. A powerful eye irritant present in smog is
Q. The most abundant constituent of atmospheric air is :
Q. Which sample of matter is a mixture?
Q. Which of the following one of the following is commonly known as 'Pond Silk' -
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