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FSC Part 1 Chemistry Guess Paper 2014

FSC Part 1 Chemistry Important Questions Guess Paper 2014

Question # 1

Give postulates of Bohr ’s atomic model

Or

Drive the expression f or the radius of revolving electorm in nth orbit of hydrogen atom using Bohr’s Model

Or

Write down the def ects in Bohr ’s atomic model

Or

Derive the f ormula f or calculating the energy of an electron in “nth” orbit using Bohr’s Model

Or

Derive an expression f or the radius of nth Bohr ’s orbit of H. atom

Question # 2

Give graphical explanation f or elevation of boiling point of solution

Or

Describe elevation of boiling point and drive the equation

M2=Kh / ∆Th X W2/W1 X 1000

Or

What is boiling point? What is the ef f ect of external pressure on boiling point? Why the temperature of aliquid remains constant at boiling point although heat is continuously supplied?

Or

How can you measure elevation of boiling point by Landsberger ’s methods?

Question # 3

What are enzymes? Explain how they act as catalysts

Or

Distinguish between homogeneous and heterogeneous catalysis with suitable example

Or

What do you mean by poisoning of catalyst?

Or

What are liquid crystals? Give their three uses

Or

Write a note on catalysis. Give its types

Or

Write any f our characteristics of enzyme catalysis

Question # 4

Describe the measurement of vapour pressure by manometric method

Question # 5

Give the basis of the molecular orbital theory and explain the paramagnetic character of O2

Or

Def ine orbital. Discuss shape of its two types.

Or

What is Atomic Orbital Hybridization? Explain bonding and structure of ethane (C2H4) on the basis ofhybridization

Or

Explain the molecular orbital structures of f ollowing molecular on the basis of the MOT

Question # 6

Prove that i) q = ∆E ii) q = ∆H

Or

Explain enthalpy and prove that ∆H = qP

Or

State f irst law of thermodynamics. Prove that ∆E = qv

Question # 7

The solubility of CaF2 in water at 25 °C is 2.05×10 mol dm-3. What is the value of Ksp at 25°C?

Or

Ca(OH)2 is a sparingly soluble compound. Its solubility product is 6.5×10-6. Calculate the solubility ofCa(OH)2

Or

What is a solubility product? The solubility of CaF2 in water at 25°C is f ound to be 2.05 x 10-4 mol dm-3.What is the value of Ksp at this temperature? (Atomic Mass of Ca = 40, F = 19)

Or

The solubility of PbF2 at 25°C is 0.64 g dm-3. Calculate Ksp of PbF2. (Molecular Mass of PbF2 is 245.2)

Question # 8

Describe the electrolysis of concentrated solution of sodium chloride?

Or

What is electrochemical series? Give its any three applications.

Or

Discuss electrolysis processes of industrial importance

Or

Describe the electrolysis of molten sodium chloride and a concentrated solution of sodium chloride

Question # 9

Describe Dalton’s law of partial pressure. Write its three applications

Question # 10

Explain hydrogen bonding in NH3, H2O and HF. How it is helpf ul in explaining the structure of ice

Or

Which of the hydrogen halides has the highest percentage of ionic character?

Or

How does hydrogen bonding explain the f ormation of ice and its lesser density than liquid water?

Question # 11

How will you describe the paramagnetic character of oxygen on the basis of M.O.T.?

Question # 12

State and explain Graham’s Law of dif f usion of gases?

Question # 13

Stat dif f erent f orms of Raoult’s law

Question # 14

The unit of rate constant is the same as that of the rate of reaction is:

a) First order reaction

b) Second order reaction

c) Zero order reaction

d) Third order reaction

Question # 15

What is neutron? How was it discovered? Give its two properties.

Question # 16

Def ine the f ollowing giving one example in each:

a) Enthalpy of solution

b) Enthalpy of atomization

c) System

d) Surrounding

Question # 17

Name various methods f or f inding order of reaction. Explain half lif e method f or determining order ofreaction

Or

What is order of reaction? Describe two methods f or f inding order or reaction.

Question # 18

Describe Millikan’s oil drop method f or determination of charge of electron

Or

Describe Millikan’s oil drop method f or measurement of charge of electron

Question # 19

Def ine enthalpy of reaction. How is measured by glass calorimeter?

Or

Def ine enthalpy of neutralization. Also discuss glass calorimeter in details