By which of the following processes are metals of high reactivity extracted from purified molten ore?
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Which element is generally No Radioactive?
............ element is represented by the given symbol.
Process of loosing electrons is known as _____.
Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in
The modern periodic table consists of 18 groups and 7 periods. What is the atomic number of the element placed in the 3rd group and the 4th period?
Which of the following is the best fire-extinguisher?
Which of the following is an example of thermosetting plastic?
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