KPK PMS Chemistry Paper II – 2008

Note: Read the following instructions carefully.

1. Attempt any Five questions
2. All questions carry equal marks
3. Extra attempt of any question or any part will not be considered
4. Candidates must draw two straight lines at the end to separate each question in answer book.

Question 1: Answer the following questions.

1. Draw the MO diagram of CO and CN?
2. Draw the structure of the following molecules on the basis of Hybridization.

Example molecule 1,          Example molecule 2

1. Differentiate between order of reaction and molecularity?

Question 2:  Answer the following questions.

1. Give an example of 2^nd order reaction? Explain that hydrolysis of an ester is a pseudo first order reaction? Why?
2. What is the effect of temperature on the value of rate constant?
3. Differentiate between adsorption and chemisorption?

Question 3: Answer the following questions.

1. How the surface area of a substance can be determined?
2. Differentiate between homogeneous and heterogeneous?
3. What is conformational analysis?

Question 4: Answer the following questions.

1. Define fermentation? Give its importance?
2. How primary, secondary and tertiary alcohol can be prepared by Grignard’s regerent?
3. Explain the term Diazonium salts?

Question 5: Answer the following questions.

1. How aromatic amino compounds can be prepared on laboratory scale as well as industrial scale?
2. How aldehyde and Ketone can be converted into simple alkanes and carboxylic acid? Give chemical reactions?
3. Convert the followings,
4. Benzene to           Benzophenone
5. Benzene          to           Phenol

• Salicylic to           Aspirin

1. Benzaldehyde to        Benzoin
2. O-xylene to          Phathalic acid

Question 6: Answer the following questions.

1. How oils can be converted into fats? Give chemical reaction with catalyst.
2. What are the benefits of vitamins for human body?
3. Differentiate between monosaccharaides, oligosaccharides and polysaccharides?

Question 7:  Answer the following questions.

1. Give the preparatory methods of antibiotics?
2. Give some examples of organic polymers and their synthesis?