The elements known as primary nutrients for plants
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In an acid base reaction which product is produced along with a salt?
____ is the most electropositive and ___ is the most electronegative element of the third period of modern periodic table.
Which gas contributes most to the Greenhouse effect?
Aromatic hydrocarbons contain at least _____ benzene like ring in their molecules.
Which method will be employed to test the hardness of water?
In the reaction H2O2 + Cl2 -----> 2HCl + O2, H2O2 acts as
What is dry ice?
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