Which drug is used for Pain Relief?
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___________ is obtained by evaporation of sea.
Uraninite is an ore/mineral of _______.
Molybdenite is an ore/mineral of
What is the percentage of methane in biogas?
Who among the following laid the foundation of chemical sciences by establishing two important laws of chemical combination?
Which of the following is most important for absorption of heat radiated from the Sun as well as from the Earth?
In the reaction H2O2 + Cl2 -----> 2HCl + O2, H2O2 acts as
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