Chemistry Class - XII 2000 (CBSE)
You are on Set ll questions

Q.1 Write the name and molecular structures of the monomers of the following polymers :
(i) Natural Rubber
(ii) Nylon-66 (Mark 1)


Q.2 (a) Write a chemical equations and reaction conditions for the conversion of :
(i) Ethene to ethanol
(ii) Phenol to phenyl ethanol
(iii) Ethanol to 2-propanol
(b) Give an for each of the following reactions :
(i) Kolbe's reaction
(ii) Reimer - Tiemann reaction (Mark 3, 2)


Q.3 (a) Account for the following observation :
(i) Beryllium resembles aluminium in several properties.
(ii) The +2 oxidation state of lead is more stable than the +2 oxidation state of tin.
(iii) CO₂ is a gas but SiO₂ is a solid.
(iv) Hydrogen fluoride has higher boiling point than hydrogen chloride.
(b) Draw the structure of XeF₄ molecule. (Atomic number Xe = 54) (Mark 4, 1)