Soft drinks contain:
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Atomic number of which of the following elements is greater than that of Copper?
Atomic number of an atom gives the number of which of the following ?
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?
The oceanic crust mainly consists of silica and __________.
Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in
Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?
What is the base of the Octal Numeral System?