Write principle and equation for preparation of ammonia from urea.

Write chemical equation for the preparation of urea.

Write the equations for the preparation of 1-iodo-butane from- (3) but-1-ene.

Write the equations for the preparation of 1-iodo-butane from- (2) 1-chlorobutane

Write balanced chemcial equations for the preparation fo pure alumina from bauxite by Bayer process.

Write with Condition & balanced equation the preparation of CO from oxalic acid.

Write the chemical equation for preparing sodium soap from glyceryl oleate and glyceryl palmitate. Structural formulae of these compounds as well.

Write balanced chemical reaction for the preparation of pure alumina from bauxite by Bayer's process.

Give two equations for the preparation of propane from Grignard reagent.

Write the principle of used for refining of germanium.