Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


1(a)(i) A sample of water that does not give lather with soap solution is _______
(a) Soft water   (b) Hard water   (c) Acidic water   (d) Alkaline water
1 M
1(a)(ii) The type of bonds in EDTA with metal cation is:
(a) Covalent   (b) Ionic   (c) Wanderwaals   (d) Coordinate
1 M
1(a)(iii) The Total dissolved solids (TDS) can be reduced by the following method
(a) Distillation   (b)Reverse osmosis   (c)Ion exchange   (d)All of the above
1 M
1(a)(iv) The ultimate source of water is
(a)Rivers and Lakes   (b) Dew and Forest   (c) Rain and Forest   (d) Underground and surface
1 M
1(a)(v) Bronze is an alloy of
(a) Cu and Nickel   (b) Cu and iron   (c) Cu and Tin   (d) Cu and Aluminium
1 M
1(a)(vi) Corrosion of metals involves
(a) Physical reactions   (b) Chemical reactions   (c) Both   (d) None
1 M
1(a)(vii) The solid fuels can be used in Internal combustion engine only after their
(a) Solidification   (b)Liquefaction   (c)Gasification   (d)All of the above
1 M
1(b)(i) Nylon-6 is manufactured from
(a) Caprolactum
(b) Maleic anhydride and hexamethylene diamine
(c) Adipic acid and hexamethylene diamine
(d) sebasic acid and hexamethylene diamine
1 M
1(b)(ii) _______ is the technique of separation and identification of chemical compounds.
(a) Chromatography   (b) bibliography   (c) Biography   (d) None of these
1 M
1(b)(iii) Microorganisms used in biotechnology shall not
(a)grow rapidly in cheap culture medium
(b)shall be readily manipulated
(c)shall bot be pathogenic
(d)all of these
1 M
1(b)(iv) Which acid is present in lemon
(a)Malic acid   (b)Citric acid   (c)Lactic Acid   (d)Tartaric Acid
1 M
1(b)(v) Final setting time of cement should not be more than
(a) 1 hour   (b) 2 hours   (c) 5 hour   (d)10 hours
1 M
1(b)(vi) Bio-Gas is
(a)Methane rich fuel   (b)Ecofriendly and polllution free source   (c)Propoane rich fuel   (d)Both A & C
1 M
1(b)(vii) An aqueous solution with pH = 0 is
(a) Strongly acidic   (b) Strongly basic   (c) Neutral   (d) Weakly acidic
1 M

2(a) What do understand by 'Green Chemistry'?
3 M
2(b) Describe any four types of bonds with one example of each.
4 M
2(c) How can the knowledge of water technology help us in solving the problem of drinking water availability in our country.
7 M

3(a) Write a short note on 'Break Point Chlorination'
3 M
3(b) Discuss cathodic protection and its significance.
4 M
3(c) List the need for alloying steel. Explain how different alloys of steel are useful in industries.
7 M

4(a) Explain the terms: Sacrificing anode and Corrosion inhibitors
3 M
4(b) What is R.U.L. test and its usefulness.
4 M
4(c) Illustrate the disadvantages of using coal as fuel. Compare LPG & CNG and state which is better and economical.
7 M

5(a) Which elements are called metal?
3 M
5(b) Define the terms: Specific gravity, Conductivity and Turbidity.
4 M
5(c) Describe the Manufacturing process of Acetic acid by fermentation.
7 M

6(a) Brief on PCC and RCC
3 M
6(b) Discuss anionic polymerization with mechanism.
4 M
6(c) What is the composition of Portland Cement? Discuss the manufacturing procsettling and hardening of Portland cement.
7 M

7(a) Explain vulcanization of rubber.
3 M
7(b) Give application of polystyrene, PVC and polyethylene.
4 M
7(c) What is monomers of Nylon 6, 6 and Bakelite. Differentiate between Thermoplastic and Thermosetting polymers
7 M



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