Download DBATU B-Tech 1st Year 2017 Oct Engineering Chemistry Question Paper

Download DBATU (Dr. Babasaheb Ambedkar Technological University) B.Tech First Year 2017 Oct Engineering Chemistry Question Paper

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DR. BABASAHEB AMBEDKAR TECHNOLOGICAL UNIVERSITY, LONERE ?
RAIGAD 402 103
Mid Semester Examination ~ October ? 2017
Branch: F. Y. B.Tech (Group B) Sem.:-I
Subjectwith Subject Code:? Engg. Chemistry(CHM103) Marks: 20
Date:? 11/101201? Time:- 1 Hr.
Instructionsz-AH questions are compulsory. (Marks)
Que. No. 1 Multiple Choice Questions. (06)
I. For regeneration oneolite ???????????? solutionisused.
a. HCI 13. NaOH c. KCI d. NaCl
II. To remove temporaryhardnessofwater ??????????? is used.
a. MgClz b. CaCl; c. Ca(OH); d. Mg(HC05);
H I. Wonly one Phase is present in one component system then the no of degree of
freedom will be ?-~-?-
3. 0 b. 1 c? 2 d. 3
1V. Which indicatoris usedto determine COD --------- .
a. Starch b. ferroin c. Methyl orange d. none
V. In Pb-Ag aHoy system -------- is the temperature at Eutectic point.
a? 3033C b. 300?C c. 325?C d. 350?C
VI. In watersystem, the curve which represent equilibrium between ice and water
vapouris called ?????????? .
a. Vaporisation curve b. Sublimation curve c. fusion curve d. None
Que. No. 2 Attempt any one of the foliowing: (06)
3.) De?ne softening ofwaterv Explain Zeolite process of softening of water with its
advantages and disadvantages.
1:.) Draw Phase diagram of Sulphursystem and explain the curves, areas and triple
points in it.
Que. No. 3 Attempt any two of the following (08)
3.) Write a note on Chemical Oxygen Demand (COD).
b.) What is Phase ruie equation? Explain the term Phase involved in Phase rule equation.
c.) Explain types of water.