University of Delhi 2010-1st Year B.Sc PMCS (Physics, Mathematics, Computer Science) Prog 2nd nstrial Chemicals and Environment UNIVERSITY - Question Paper
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[This question paper contains 4 printed pages ]
Your Roll No
5202
B.Sc. Prog./II
IC-201 Industrial Chemicals and Environment
(NC - Admissions of 2005 & onwards)
Maximum Marks 75
Time 3 Hours
(Write your Roll No on the top immediately on receipt of this question paper)
Attempt six questions in all including Q No 1 which is compulsory
1 (a) Explain the Term Biodegrability
(b) What are the characteristics of a good disinfectant
(c) Define th/Term B OD How does an increase in
B OD leals to water pollution 9 j
(d) Explain jie limitations and advantages of Zeaiite process jar softening and hard water
(e) What as Earthenware and stoneware 9
(3*5=15)
2 (a) Name the common element present in the anode
mud in electrolytic refining of copper Why are they so present 7 (4)
(b) State the role of silica m Metallurgy of Co (2)
(c) Differentiate between Minerals and ores with suitable examples (2)
(d) Explain the KROLLs process for making Titanium Can zirconium be prepared by this method7 (4)
3 (a) Why is Glazing important for ceiamic articles and
how is it carried out 7 (5)
(b) What is refractory material7 Give its types and write about high alumina refactory (5)
(c) How Frit is prepared 7 (2)
4 Write note any three of the folloving
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(a) Mixed-bed deioniser
(b) Green house effect *
(c) Solvent Extraction Process
(d) Liquation process for refining ofietal
5 (a) Give the Wet process for the manufacture of cement (6)
(b) What are the silica and alumina .modules for expressing the Quality of cement 9 (3)
- (c) If the concentration of lime does not lie with in 58 to 65% of the cement, how does it affect the quality of cement (3)
6 (a) What is cryogenics 9 Where is this technology
used ? (2)
(b) What are the genera! methods employed for the liquefaction of air 9 Discuss the principle involved therein (5)
(c) Why do the producers of soda-ash produce dense ash in large amounts (5)
7 (a) Discuss (a) Double catalysis or interpass
absorption design
(b) What are dimeiisionally stable anodes ?
(c) What is meant jy dual pressure technique in the preparation of Citric Acid 9 (4><3 = 12)
8 (a) What is break-point chlorination and what is its significance ?
(b) What is meant by available chlorine in bleaching powder How it can be estimated in a sample of bleaching powder 9 *
(c) What are lon-Exchange resin 9 How are they used to purify water 7 (4x3 = 12)
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