Download DBATU B-Tech 1st Year 2019 Mid Semester CHM1202 Engineering Chemistry Question Paper

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Mid Semester Examination — October 2019
Course: B. Tech in CO/IT/Elect. Engineering Div:- C,D, E Sem: I
Subject Name: Engineering Chemistry Subject Code: CHM1202
Max Marks:- 20 Date:- 04/10/2019 Duration:- 1 Hr.

Instructions to the Students:

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1. Each MCQ carry one mark.
2. Draw neat labeled diagram for appropriate question.
3. If some part or parameter is noticed to be missing, you may appropriately assume it.

(Level/CO) | Marks

Q. 1 | Answer the following multiple choice questions. 6

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1. Salts causing hardness are treated by soda. (Apply)
   a) Residual b) Temporary c) Permanent d) All of above
2. Disposal of large quantity of sludge is a problem in . (Remember)
   a) lime soda process b) permanent hardness process
   c) zeolite process d) none of the above

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3. In Zeolite process for regeneration of zeolite bed solution is used. (Apply)
   a) 10% NaCl b) dil. NaOH c) dil. HCI d) dil H2SO4
4. Mathematically, the phase rule can be expressed by , (Understand)
   a) P=C-F+2 b) F=C-P+2 c) F+P=C+2 d) all of these
5. Phase rule not much helpful in case of system attains equilibrium state ......... (Understand)
   

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   a) very slow b) very fast c) very easily d) very general
6. In Ag-Pb alloy system freezing curve of Pb starts at , (Remember)
   a) 961 b) 303 c) 327 d) 974

Q.2 | Solve Any Two of the following. 3X2

1. (A) State principle of Winkler’s method. (Remember)

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2. (B) Define Component and Degree of Freedom with example. (Apply)
3. (C) Define Gibbs Phase rule, Polymorphism, Eutectic point of Ag-Pb alloy (Remember) system.

Q. 3 | Solve Any One of the following. 8

1. (A) What is softening of water? Explain Ion Exchange process of softening of (Apply) water with its advantages and disadvantages?
2. (B) Explain the phase diagram of one component water system. (Understand)

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