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Q. Salts of which among the given elements provide colours to fireworks?
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Q. Which one radiation has the highest energy ?
Q. The main compound formed during the fermentation of cane juice is
Q. Which gas emitted by power stations causes acid rain?
Q. Nucleus of an atom consists of.
Q. During the burning of fuels, carbon and hydrogen present in the fuels are
Q. Of the following which one pollutes the air of a big city ?
Q. Burning Magnesium ribbon produces white ash, which dissolves in water to form____.
Q. Ornithophily refers to the pollination through which among the following?
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