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B.Sc. 1st Part Subsidiary




Physical Chemistry

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Group-A

1.a. Give the physical significance of Vander Waal constant 'a' and 'b'. Mention their unit.
b. Deduce law of corresponding state.

2. a. Find out exprssion for the work done in an isothermal reversible expansion of an ideal gas.
b. Define molar heat capacities and show that Cp - Cv = R for ideal gas.

3. a. Write notes on any three of the followings-
i. Osmotic pressure
ii. Phase rule
iii. Kohlrausch law
iv. Equivalent conductance
v. Eutectic point

Group-B

4. Discuss
i. Bohr's postulates
ii. Debroglie hypothesis
iii. Balmer series of spectral lines

5. a. Give the hybridization, structure and shape of the following
i. XeOF4
ii. NO2-
iii. BrF3
b. What is hydrogen bond. Discuss with reference to NH3 and o-nitrophenol.

6. a. Give the preparation, properties and uses of hydrogen peroxide or sodium thiosulphate.
b. What are interhalogen compound.

Group-C

7. a. Discuss the isomerism exhibited by
i. Maleic acid and fumaric acid
ii. Latic acid
iii. 1-chlorobutane and 3-chlorobutane
b. Explain recemic mixture

8. Discuss
i. Resonance
ii. Inductive effect
iii. Electromeric effect with suitable example

9. Explain the following reactions(any three)
i. Cannizzaro reaction
ii. Aldol condensation
iii. Rosenmund reduction
iv. Horrmann bromamide reaction



Year:2019


Group-A

1. a. Define critical constants.
b. Find out the value of critical constants in terms of vander waal constants.

2.a. Define specific conductance, Equivalent conductance and Molar conductance of an electrolytic solution.
b. Give a method of determination of Specific conductance.

3. Explain any three of the followings:
a. Limiting radius ratio
b. Unit cell
c. Calomel electrode
d. Surface tension
e. Brownian motion

Group-B

4. a Explain Bohr's model of atom.
b. Find out the expression for radius and energy of an electron in hydrogen aton.

5. a. Explain:
i. Diploe Moment
ii. Ionization Potential
iii. Heigenberg Uncertainty Principle
b. Why the ionization potential of nitrogen is greater than oxygen and phosphorus both ?

6. a. Discuss the structure and bonding in XeF2 and XeF4
b. Give the structure , preparation and properties of borazine.

Group-C

7.a. How will you determine the molecular weight of a base by Platini Chloride Method.
b. Discuss geometrical isomerism with suitable example.
8.a. How will you distinguish:
i. Ethylene and Acetylene
ii. Formic acid and Acetic acid
iii. Acetaldhyde and Acetone
b. Give a method for preparation of methyl magnesium iodide.
9. a. Explain why:
i. The boiling point of ethanol is higher than diethyl ether
ii. Chloroacetic acid is stronger than acetic acid
iii. Phenol is acidic but Ethyl alcoholis not
iv. Secondary carbonium ion is more stable than primary carbonium ion.


Year:2018


Group-A

1.a. Give the physical significance of Vander Waal constant 'a' and 'b'. Mention their unit.
b. Deduce law of corresponding state.

2. a. Find out exprssion for the work done in an isothermal reversible expansion of an ideal gas.
b. Define molar heat capacities and show that Cp - Cv = R for ideal gas.

3. a. Write notes on any three of the followings-
i. Osmotic pressure
ii. Phase rule
iii. Kohlrausch law
iv. Equivalent conductance
v. Eutectic point

Group-B

4. Discuss
i. Bohr's postulates
ii. Debroglie hypothesis
iii. Balmer series of spectral lines

5. a. Give the hybridization, structure and shape of the following
i. XeOF4
ii. NO2-
iii. BrF3
b. What is hydrogen bond. Discuss with reference to NH3 and o-nitrophenol.

6. a. Give the preparation, properties and uses of hydrogen peroxide or sodium thiosulphate.
b. What are interhalogen compound.

Group-C

7. a. Discuss the isomerism exhibited by
i. Maleic acid and fumaric acid
ii. Latic acid
iii. 1-chlorobutane and 3-chlorobutane
b. Explain recemic mixture

8. Discuss
i. Resonance
ii. Inductive effect
iii. Electromeric effect with suitable example

9. Explain the following reactions(any three)
i. Cannizzaro reaction
ii. Aldol condensation
iii. Rosenmund reduction
iv. Horrmann bromamide reaction

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