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Q. Total number of naturally occurring elements
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Q. The most electronegative element among the following is
Q. Which of the following metals forms an amalgam with other metals ?
Q. The segment of a myofibril that is called a sarcomere runs from
Q. Which one of the following metals is used to galvanise iron ?
Q. A balloon filled with helium rises in air because
Q. The most abundant element is
Q. The type of water which does not lather easily is called is called
Q. Copper substances when exposed to air gains a green coating due to the formation of:
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