The absolute zero is a temperature at which _______
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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 used as anaesthetics?
Earth's crust mainly contains ______.
30 litres of salt solution contains 5% salt. How many litres of water must be added so as to get a resultant solution containing 3%salt?
Removal of carbon particles from air involves the principle of
What is the chemical formula for Sodium Chloride (Salt)?
What is the process of melting also called?