Allied II chemistry II

1.A homogeneous  part of system that is physically distinct from the other parts of the system is called

• a).phase

   

•   b).Component

     

• c).Triple point of water

     

• d).Degree of freedom

Gibbs phase rule for general system

• a). P+ F=C -1

         

• b).P+F=C+1

         

• c).P+F=C -2

        

•  d).P+F=C+2

Liquid phase exists for all compositions above region?

•    a). Equilibrium region

      

     

•  b).Eutectic region

    

•    c). Isometric region

•   d).Sublimation region

With respect to one component system,what is the mixture present at the                      triple point?

        

•      a).Water

          

• b).Ice

        

•   c).Water vapour 

         

•  d). All the above

The oil used as frothing agent in froth floatation process is

• a) Castor oil

• b) Coconut oil 

• c) Pine oil

• d) Palmitic oil

The unit of rate constant for zero order reaction is _________

• a) s-1

• b) dm-3mol-1s-1

• c) dm3mol-1s-1

• d) dm-3mol s-1

The equilibrium constant is 278 for the reaction 

     2SO₂(ɡ)+O₂(ɡ)→2SO₃ (ɡ)

at the same temperature, what will be the equilibrium constant for the following reaction?

     SO₃(ɡ)→SO₂()+¹/₂O₂(ɡ)

• A) 6 x 10 ̄²

• B) 1.8 x 10 ̄³

• C) 1.3 x 10 ̄⁵

• D) 3.6 x 10 ̄⁵

15)Once equilibrium is achieved, the amount of each reactant and product remains _______.

• variant

• constant

• non variant

• univariant

The phenol water system is an example  of……

•  a). Eutetic system

              

•  b). Triple point system

               

•  c).Polymorphic system

                 

• d). Isomeric system

What are the degree of freedom?

       

• a).Total variables in the process

        

•   b).Total species in the process

          

• c). Total reactions in the process

         

•  d).None of the above