GTU Chemistry - May 2016 Exam Question Paper

GTU First Year Engineering (Semester 2)
Chemistry
May 2016

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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