Which purification technique is used for high boiling organic liquid compound (decomposes near its boiling point)?

Which of the following compounds will provide a tertiary alcohol or reaction with excess of CH₃MgBr followed by hydrolysis?

Which of the following compounds does not exhibit resonance?

Match List-I with List-II

	List-I (Elements)		List-II (Properties)
(a)	Ba	(i)	Organic solvent soluble compounds
(b)	Ca	(ii)	Outer electronic configuration $$6{s^2}$$
(c)	Li	(iii)	Oxalate insoluble in water
(d)	Na	(iv)	Formation of very strong monoacidic base

Choose the correct answer from the options given below :