1.  Oxidizing agent

2.  catalyst

4.  bleaching agent

1.  +1

2.  -1

4.  +2

1.  ammonium alum

2.  chrome alum

3.  ferric alum

1.  Al2O3.3H2O

2.  Al2O3.2H2O

4.  Al2O3

2.  graphite

3.  coal

4.  charcoal

1.  removal of C2H6

3.  increase in temperature

4.  increase in pressure

2.  It is an endothermic process

3.  It is a reaction for which ΔH=0

4.  It is a sublimation process

1.  

2.  

4.  

1.  CH2OH

3.  

4.  CH3–CH3

1.  ethyl alcohol

3.  ethanoic acid

4.  ethyl acetate