Which element is generally No Radioactive?
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By which of the following processes are metals of high reactivity extracted from purified molten ore?
............ element is represented by the given symbol.
Process of loosing electrons is known as _____.
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?
Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in
Which of the following is the best fire-extinguisher?
The gases used in different types of welding would include
Oxygen and Acetylene are the gases used in different types of welding.
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