Which compound is used in Anti-malarial drug?
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Which of the following is an unsaturated Hydrocarbon?
What is the common name of the solution of calcium hydroxide?
Atomic numbers of four elements are as follows : F(9), P(15), Cl(17), Ar(18). Which of the following two elements would be chemically similar?
Which of the following elements has a total of 3 shells with 8 electrons in the last orbit?
_____ is the fourth state of matter.
Which of the following elements replaced eka-Aluminium in Mendeleev's Periodic table?
The chemical weathering of feldspar produces