How is dinitrogen tetroxide formed ? Give equation. 

How is hydrogen bond formed ? Give hydrogen bonding in (i)H_(2)O(ii)HF molecules.

Dinitrogen is used

How will you prepare carboxylic acid from Grignard's reagent ? Give equation.

How would you obtain ethene from ethanol? Give equation.

How can you convert potassium dichromate into chromyl chloride ? Give equations for the reactions involved.

How is boron obtained from borax ? Give chemical equations with reaction conditions.

Write the name of the product formed and give balanced equation of the reaction when : calcium is reacted with cold water

Write the name of the product formed and give balanced equation of the reaction when : ammonium chloride is heated

Write the name of the product formed and give balanced equation of the reaction when : lead nitrate is heated

How is potassium dichromate prepared from a sample of chromite ore ? Give balanced equations for the chemical reactions involved.