Which of the following group is NOT Dobereiner Triads?
An alloy is an example of
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Which one of the following is not a borderline element?
In the reaction H2O2 + Cl2 -----> 2HCl + O2, H2O2 acts as
The vast amount of sea weeds present in oceans may produce an endless source of
Which is not a green house gas in the following?
In the following gases, which is not a colorless or odourless gas?
Which of the following is called Aurum?
Which of the following gases are responsible for the greenhouse gas effect on Earth?
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