Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?
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Why is Carbon Monoxide a pollutant ?
....... is displaced when zinc is added to the solution of copper sulphate
Which of the following can be beaten and converted into thin sheets?
Which metal is liquid at room temperature?
Mercury is the only metal that remains in liquid at room temperature.
There are ............ metalloids in the modern periodic table.
Elements A, B and C occur as Dobereiners triads. If the atomic mass of A is 7 and that of C is 39, what will be the atomic mass of B?
The passage of an electric current through a conducting liquid causes ___________.
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