NIFTEM-Basic Chemistry- End Semester Question Paper Dec 2019- 1st year

NIFTEM-Basic Chemistry- End Semester Question Paper Dec 2019- 1st year

The information shared below is only to get a rough idea of NIFTEM’s end semester question paper pattern, so as to easily get decent marks in the exams. However, questions proportion from the syllabus topics may vary every semester.

Important points-

  1. Time- 3:00 hours
  2. Total Marks- 100
  3. Three parts A, B & C, in which Part A is compulsory of (30 marks) having Objective questions, MCQs, Fill in the blanks and matching type questions. Students have to answer the questions from Part-A on the paper itself. Time allotted for Part-A is 40 minutes
  4. Part B & part C consists of 40 marks and 30 marks respectively. Part B- 8 questions of 5 marks each & Part C- 3 Questions of 10 marks each. Time for Part-B and C is total of 2:20 hours.

PART B

Answer any 8 questions from the following-

  1. What are pseudo unimolecular reactions? Give two examples.
  2. Derive an expression for the rate constant of a second-order reaction. Also, write its units.
  3. What is Osmotic pressure? Describe one method to determine the osmotic pressure.
  4. What do you mean by the pH of a solution? What is the range of the pH scale?
  5. What do you mean by chemical equilibrium? Represent graphically how equilibrium is attained.
  6. State Le Chatelier’s Principle.
  7. Give mechanism of any one reaction involving Carbanions
  8. Explain why E2 reaction is the most common elimination reaction among the E2, E1 and E1cb.
  9. Explain the crystallinity and amorphicity of a polymer.
  10. Discuss the molecular weight distribution. List in increasing value: Mn, Mv, Mw and Mz.

PART C

  1. Briefly describe the ‘Transition State Theory’. What are the advantages of this theory over collision theory?
  2. What is meant by the terms, ‘Degree of Hydrolysis and Hydrolysis Constant’? Describe the various methods used for determining the degree of Hydrolysis of a salt?
  3. Derive Van’t Hoff equation giving the effect of temperature on equilibrium constant.
  4. What are SN reactions? Explain the factors affecting the reactivity in SN reactions.
  5. What do you mean by Copolymer? Describe the types of Copolymerization with suitable examples and also give the mechanism and kinetics of copolymerization.
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