chemistry expected questions -by Subramani sir…

Expected short questions from PART-A:

1) Define specific heat and equivalent conductance of an electrolyte.
2) How specific and equivalent conductance are related? Mention their units.
3) How conductivity cell is constructed?
4) Differentiate electrolytic cell from galvanic cell.
5) How specific conductance does vary with dilution?
6) What is weak and strong electrolyte? Give two examples each.
7) On what principle solar cell works?
8] Define standard electrode potential.
9) Differentiate primary cell from secondary cell.
10) Define state function and explain with eample.
11) What are the limitations of 1st law of thermodynamics?
12) Define entropy.
13) Define 1st law of thermodynamics.
14) What is spontaneous process? Give two examples.
15) What are applications of Clapeyron-Clasius equation?
16) Explain intensive and extensive properties with suitable examples.
17) Why efficiency of any heat engine cannot be achieved unity?
18] Why adiabatic expansion accompanies with cooling?
19) Show that 1 mg of CaCO3 equivalent hardness per litre is 1 ppm.
20) What are the specifications of potable water?
21) What are the advantages of using chlorine as disinfectant?
22) What are the advantages of reverse osmosis in purifying saline water?
23) Define BOD and COD.
24) In what way BOD test is useful to us?
25) Explain the term galvanic corrosion with suitable example.
26) Explain differential aeration with example.
27) What is cladding?
28]  What are the important characteristics of plastic?
29) Distinguish between addition   and condensation polymerization.
30) What is fibre?
31) What are the important applications of bakelite?
32) What are the drawbacks of raw rubber?
33) What are the uses of silicone rubber?
34) What is the structural requirement to behave as an intrinsically conducting polymer?
35) What is doped conducting polymer?
36) What are the requirements as a good fuel?
37) What are the advantages of solid fuel?
38] How water and sulphur are removed from crude petroleum?
39) Explain the terms cracking and knocking.
40) Define octane and cetane number.
41) Mention few examples of rocket propellants.
42) How octane number of fuel is increased?
43) Which catalyst is used in catalytic converter? What is its function?
44) Define refractory.
45) Indicate monomer units involved in
 i.Natural rubber
 ii.Teflon
 iii.Dacron.
     Expected long questions from Part-B:
1)     a) What is cell constant? How is it determined?     
        b)Define specific and equivalent conductance of an electrolyte. How are they determined experimentally?        
        c) Related problem.
2      a) How calomel electrode is constructed? Show the reaction relating to oxidation and reduction at each electrode.       
        b) Derive Nernst’s equation.         
        c) Problem relating to electrode potential with varying concentration of electrolyte.
3)     a) Define pH. How pH of solution is determined by quinhydrone electrode experimentally?           
        b) Discuss potentiometric titration.        
        c) Problem relating to determination of pH of solution by  (i)calomel electrode (or) (ii) quinhydrone electrode.
4)     a) What is fuel cell? Explain its working?       
        b) Write the chemical reaction involved in charging and discharging of lead acid accumulator.           
        c) What are the characteristics of primary cell?
5)     a) Derive an expression for work done in reversible isothermal expansion of an ideal gas.           
        b) Derive an expression relating P and V for adiabatic process.  c) Related problem.
6)     a) Derive an expression for entropy change in perfect gas     (i) at const V  (ii) at const P  (iii) At const T.     
        b) Related problem.
7)     a) Derive Gibb’s Helmholtz equation.
        b) Problems on Clapeyron-Claussius equation.
8]     a) Problem on Carnot cycle.         
        b) Why entropy of universe is increasing?      
        c) How Gibb’s equation is useful in predicating spontaneity of reaction?
9)     a) Explain the function of indicator in EDTA titration.    
        b) How hardness of water is determined by EDTA method?   
        c) Problem in EDTA method.
10)   a) What are the various methods of disinfection of water?   
        b) Explain the term breakpoint chlorination with suitable sketch. 
        c) How desalination is carried out by reverse osmosis?
11)   a) Explain electrochemical theory of corrosion by taking iron as an example.               
        b) Write short note on cathodic protection.      
        c) How C/A ratio influences the rate of corrosion?
12)   a) Explain the terms anodic and cathodic coating with suitable examples.              
        b) Explain electroless plating with example.      
        c) What are the characteristics of a good paint?
13)   a) Differentiate thermoplast from thermosetting plastic.   
        b) Explain addition and co-polymerization with example.   
        c) How epoxy resin is produced? Explain with chemical reaction.
14)   a) How bakelite is produced? Discuss its properties and uses.  
        b) How Nylon 6,6 is produced? Represent necessary equation.  
        c) Write short note on PVC.
15)   a) Explain the term vulcanization.        
        b) Discuss compounding of rubber.        
         c) How Buna-S is produced?       
16)   a) Write short note on conducting polymer.      
        b) Write short note on water line corrosion.      
        c) What are the applications of conducting polymers.
17)   a) Define HCV and NCV. How are they related?     
        b) How HCV of fuel is determined by Bomb calorimeter.   
        c) Problem relating to Bomb calorimeter.
18]   a) Explain proximate analysis of coal in detail.     
        b) Problem on proximate analysis.   
19)   a)Discuss detail account of fixed bed catalytic cracking.   
        b) Write short note on (i) Gasoline (ii) Kerosine (iii) Diesel
20)   a) Write short note on (i) LPG & (ii) CNG.      
        b) What are the requirements of good refractory?     
        c) What is the principle involved in rocket propulsion?
21)   a) Explain the terms (i) refractoriness and (ii) Thermal spalling. 
        b) Explain Segar cone test and refractoriness under load test of refractory material.