AU C

OE

QP

1 57267 T

Reg. No.

Question Paper Code : 57267 T

B.E./B. Tech. DEGREE EXAMINATION, MAY/JUNE 2016

Second Semester

Civil Engineering

CY 6251 – ENGINEERING CHEMISTRY – II

(Common to Mechanical Engineering)

(Regulations 2013)

Time : Three Hours Maximum : 100 Marks

Answer ALL questions.

PART – A (10 × 2 = 20 Marks)

1. List out the requirements of boiler feed water.

����� ��� ���� ���� ������� �� �

2. Why Calgon conditioning is better than phosphate conditioning ?

����� ����� ��������� ����� ���������� ��

�� � ?

3. What is an electrochemical series ?

!�� ����"�"� ����# ����� ��$ ?

4. What are the essential ingredients of paints ?

�%&����'(��"����)�#"���?

5. What are batteries ?

!�� ��*�# ����� ��$ ?

6. Differentiate between nuclear fission and nuclear fusion.

��)���+!,-. ��)/�&+ 0��"�,�� ��- ��� �

7. Define abrasives.

AU C

OE

QP

2 57267 T

��1�2���)�# - ��3"-

8. What are refractories ?

����. ��*4 ���)�# ���$"��� ?

9. What is meant by calorific value of a fuel ?

5) �� ���)�6� ����� !���2 ��� ��$ ?

10. Give the composition of producer gas.

�,���� ��7��� �����# "��� ?

PART – B (5 × 16 = 80 Marks)

11. (a) (i) With neat diagram, explain the Zeolite process for water treatment.

8��"��� '��� �9 ��%:�����(4. '���"

��� �� ����

(8) (ii) Describe the demineralization process of water softening and write down the

reaction involved in it.

�� �2(��� ;�,- ���3 �!� ���!"�(4.

'���" ����. ;��� �#� ���$����� � (8)

OR (b) (i) Explain with neat diagram, the desalination of brackish water of reverse osmosis

method.

��� �<= >?��3�� @�. ��% �<���) ����

�������(4. '���" ��� �� ���� (8)

(ii) Describe the carbonate and phosphate conditioning of water to overcome the

boiler feed problems.

����� ��� ���� ��3A��$��� !��6(4.

��%��$ !,-. ����� ��%����������� ����

(8)

12. (a) (i) Explain how corrosion is controlled by sacrificial anode.

��"�� 0�$�� @�. ;�!�$. �>��- ���

���������� ? (8)

(ii) Derive Nernst equation and write its applications.

��%�� !� ���� �)��. ;�� �"�������

�� � (8)

OR

(b) (i) Discuss the importance of design and material selection in controlling corrosion.

AU C

OE

QP

3 57267 T

;�!�$��� ������ ���� ���)��6�

�9��!�2!,-. ��%+ �1��� '(��"� ����

���(4� (8)

(ii) Write a note on

�- 4���2 ��3� :

• Galvanic corrosion

a. ��� ��$6( ;�!�$.

• Differential aerated corrosion

b. ��- �� ��,���� ;�!�$. (8)

13. (a) (i) Describe the construction of lead-acid battery with reaction occurring during

discharging.

!�� ���6�",�. �17. ��� ����. ���$7��,

���". – ;!��!�� ������ ��!�$��� ���� (8)

(ii) What is a breeder reactor ? Describe with a neat diagram the conversion of U-

235 into Pu-239.

B��C�% ;D( �) ��� ��� ��$ ? U 235 E PU 239

0� !�,-. '���" ���6��$ ��� �� ���� (8)

OR

(b) (i) With a neat diagram, explain the working principle of H2-O2 fuel cell with cell

reaction.

�����$7�� H2 O2 �����)#������ ���� �17.

'���" ���6��$ ��� �� ���� (8)

(ii) Explain how electric power is generated by using wind energy.

!�,- 0,����"������ !�� 0,��� �"��( 4.

'���" �� � (8)

14. (a) (i) Explain the terms “Dimensional stability” and “Thermal spalling”.

��!�& �������� !,-. ����A���+ 0��"

��%������ ���� (8)

(ii) Describe the manufacturing process of borosilicate glass.

����3������ �F&�9 �"��(4. '���" ���� (8)

OR

(b) (i) Describe with a neat diagram how Portland cement is manufactured by a wet

process.

AU C

OE

QP

4 57267 T

G3 '����9 ���%��F� �!�9 �"��(4.

'���" ��� �� ���� (8)

(ii) Write down the properties and uses of

�<= ����(���� �,��� �F2���7. �"����7.

�� � :

• Waterproof cement

- ��%�2�� �!�9

• White cement

- ��#�� �!�9 (8)

15. (a) (i) What is meant by Proximate analysis ?

;)���! 01+ ��� ��$ ? (8)

(ii) Describe with neat diagram how flue gas is analyzed by Orsat method.

0%� '����9 �>��- ���6�",-��7(�# (Flue

gases) 01+ �1"�������$ ? (8)

OR

(b) (i) With neat diagram, explain the manufacturing of metallurgical coke by Otto-

Hoffman method. (8)

0��� – 0B��!� '����9 �>��- �����

���"��(������� ����� ��� �� ����

(ii) Discuss the production and applications of water gas. (8)

��% ��7 �"���2 !,-. �"���9�$ ����

____________

AU C

OE

QP

Ws 20

Reg. No. :

B.E./B.Tech. DEGREE EXAMINATION, APRIL/MAY 2017.

Second Semester

Civil Engineering

CY 6251 T — ENGINEERING CHEMISTRY — II

(Common to Mechanical Engineering)

(Regulations 2013)

Time : Three hours Maximum : 100 marks

Answer ALL questions.

PART A — (10 2 = 20 marks)

1. ö©ßø©¨£kzu¨£mh }øμ÷¯ öPõvP»ÛÀ £¯ß£kzu ÷Ásk®, Hß?

Why is water softened before using in boiler?

2. Põμ ö£õi¯õSuÀ GßÓõÀ GßÚ? AuøÚ ukUS® Âu[PÒ ¯õøÁ?

What is meant by caustic embrittlement? How it is prevented?

3. uÛ ªß•øÚ \õzv¯zøu Áøμ¯Ö. AuøÚ £õvUS® PõμoPøÍU SÔ¨¤kP.

Define single electrode potential. Mention the factors affecting it.

4. “Bo ©ØÖ® |m(nut)iøÚ J÷μ E÷»õPzuõÀ u¯õ›UP ÷Ásk®” {¯õ¯¨£kzxP.

Bolt and nut made of the same metal is preferred, justify.

5. AqÂß \[Q¼ GvºÂøÚø¯ Áøμ¯Ö.

Define nuclear chain reaction.

6. Põμ ªßP»ß, E»º¢u P»øÚ Âh E¯º¢ux. Hß?

Alkaline battery is superior to dry cell. Why?

7. öÁ¨£zvß ^ÁÀPÍõP ]uÖuÀ GßÓõÀ GßÚ? AuøÚ GÆÁõÖ uºUP»õ®?

What is meant by thermal spalling? How it can be avoided?

Question Paper Code : 71698 T

AU C

OE

QP

Ws 20

71698 T 2

8. }º öÁÖUS® ]ö©sm GßÓõÀ GßÚ?

What is hydrophobic cement?

9. A¸QÀ ©ØÖ® CÖv B´ÂøÚ ÷ÁÖ£kzxP.

Distinguish between proximate and ultimate analysis.

10. ].Gß.â GßÓõÀ GßÚ? Auß Tmk ö£õ¸ÒPÒ ¯õøÁ?

What is CNG? Give its composition.

PART B — (5 16 = 80 marks)

11. (a) (i) RÌUPõq® öPõvP»ßPÎß CßÚÀPøÍ Â›ÁõUP® ö\´P,

(1) \Uv ©ØÖ® ö\vÀ E¸ÁõuÀ

(2) Põμ¨ ö£õi¯õSuÀ.

(ii) }›À C¸¢x E¨¦ }UP® ö\´²® Gvº Fk£μÁÀ GßÓ •øÓø¯

ÂÁ›UP.

(i) Explain the following boiler troubles :

(1) Sludge and Scale formation (4)

(2) Caustic embrittlement. (4)

(ii) Describe Reverse Osmosis method for desalination of water. (8)

Or

(b) (i) }º EÒ£s£kzxuÀ GßÓõÀ GßÚ?

(ii) }›ß PÛ© }UP® ö\´¯ EuÄ® A¯Û¨ £›©õØÓ •øÓ ÂÍUSP? uß

ö\¯ÀvÓøÚ CÇ¢u Gvº ©ØÖ® ÷|º A¯Û ©õØÔPÒ GßÚ£k® P›©¨

¤]ßPÒ GÆÁõÖ uß ö\¯ÀvÓøÚ v¸®£¨ ö£ÖQßÓÚ.

(i) What is meant by internal conditioning of water? (8)

(ii) Explain the demineralization of water by ion exchange process. How are exhausted cation and anion exchange resins regenerated? (8)

12. (a) (i) ªß•øøÚ \õzv¯zvØPõÚ ÷|ºÚìm \©ß£õmøh Á›ø\¨£kzxP.

Auß £¯ßPøÍU SÔ¨¤kP.

(ii) A›¨¦U Pmk¨£õmiØPõÚ £¼öPõkUS® ÷|ºªßÁõ´ ©ØÖ®

DºUP¨£mh ªß\õμ •øÓPøÍ ÂÁ›UP.

(i) Derive Nernst equation for electrode potential. Mention its applications. (8)

(ii) Describe the sacrificial anode and impressed current methods for corrosion control. (8)

Or

AU C

OE

QP

Ws 20

71698 T 3

(b) (i) ªß\õμªÀ»õu •»õ® Gߣx GßÚ? ªß\õμ©ØÓ {UPÀ •»õø©¨

£ØÔ ]Ö SÔ¨¦ ÁøμP.

(ii) ÷Áv ©ØÖ® ªß\õμ÷Áv A›¨¤øÚ £õvUS® PõμoPÒ ¯õøÁ?

(i) What is electroless plating? Write short note on electroless nickel plating. (8)

(ii) What are the factors influencing chemical and electrochemical corrosion. (8)

13. (a) (i) ¼zv¯® ªßP»ß £ØÔU SÔ¨¦ ÁøμP.

(ii) øímμáß & BUêáß G›ö£õ¸Ò ö\À¼ß ö\¯À£õmøh ]Ó¢u

Áøμ£hzxhß ÂÁ›UP.

(i) Write notes on lithium battery. (8)

(ii) With a neat sketch explain the functioning of Hydrogen–oxygen fuel cell. (8)

Or

(b) (i) Aq Eø»°ß £SvPÒ ©ØÖ® ö\¯À£õkPøÍ ö£õ¸zu©õÚ

Áøμ£hzxhß ÂÁ›UP.

(ii) {UPÀ & ÷Pmª¯® ªßP»Ûß Pmk©õÚ® ©ØÖ® ö\¯ÀPÒ (A) ÷Áø»

ö\´²® •øÓPøÍ ÂÁ›UP.

(i) Explain with a neat diagram the parts and functions of a nuclear reactor. (8)

(ii) Explain the construction and working of Ni-Cd battery. (8)

14. (a) (i) ÷u´US® ö£õ¸mPÒ GߣøÁ ¯õøÁ? Põº÷£õμsh® ©ØÖ®

B¾sh®, AøÁPÎß E¸ÁõUS® •øÓ ©ØÖ® £s¦PÒ ¯õøÁ?

(ii) ]ö©sm Aø©zuÀ ©ØÖ® PiÚ©õuÀ \®£¢u¨£mh GvºÂøÚPøÍ

›ÁõUP® ö\´P.

(i) What are abrasive? Give the preparation and properties of Carborundum and Alundum. (8)

(ii) Explain setting and hardening of cements with the reactions involved. (8)

Or

(b) (i) A¾ªÚõ ©ØÖ® ©õUÚø\m ö\[PÀPÒ GÆÁõÖ E¸ÁõUP¨£kQßÓÚ?

(ii) ÷\õhõ ©ØÖ® L¤Îsm PsnõiPÎß Tmk¨ ö£õ¸ÒPÒ, £s¦PÒ

©ØÖ® £¯ßPøÍ öuõSzx GÊxP.

(i) How are alumina and magnesite bricks manufactured? (8)

(ii) Write the composition, properties and uses of soda and flint glasses. (8)

AU C

OE

QP

Ws 20

71698 T 4

15. (a) (i) {»UP›°ß CÖv B´ÂøÚ ÂÁ›UP.

(ii) £÷¯õj\À Gߣx GßÚ? £÷¯õj\¼ß iμõßì & Gìh›L¤÷Påß

©ØÖ® £÷¯õj\¼ß |ßø©PøÍ ÂÁ›UP.

(i) Describe the ultimate analysis of coal. (8)

(ii) What is bio-diesel? Explain transesterification and advantages of bio-diesel. (8)

Or

(b) (i) }º G›Áõ²Âß E¸ÁõUP •øÓ (A) u¯õ›¨¦ ©ØÖ® Auß C¯À,

Cμõ\¯Ú öPõÒøPPøÍ Â›ÁõUP® ö\´P.

(ii) L¨Ð G›Áõ² £S¨£õ´Ä ö\´uø» Bºö\m •øÓ°øÚ £¯ß£kzv,

ö£õ¸zu©õÚ Áøμ£hzxhß Â›ÁõUP® ö\´P.

(i) Explain the physico chemical principles involved in the manufacture of water gas. (8)

(ii) Explain the flue gas analysis by Orsat method with suitable diagram. (8)

—————————

AU C

OE

QP

WK 10

Reg. No. :

B.E./B.Tech. DEGREE EXAMINATION, APRIL/MAY 2015.

Second Semester

Civil Engineering

CY 6251 T — ENGINEERING CHEMISTRY –II

(Common to Mechanical Engineering)

(Regulation 2013)

Time : Three hours Maximum : 100 marks

Answer ALL questions.

PART A — (10 2 = 20 marks)

1. öPõvP»ßPÎÀ PiÚ }øμ¨ £¯ß£kzxu»õÀ Á¸® SøÓPÒ CμsiøÚU TÖP.

Write any two disadvantages of hardwater in boilers.

2. öPõvP»ß ÷\ºøÁPÒ GßÓõÀ GßÚ?

What are boiler compounds?

3. RÌUPõq® ªßP»zvß ÷|ºßìm \©ß£õmiøÚ GÊxP.

s2ag

2agnn /Mg//Mg/ZsZ

Write the nernst equation for the cell.

s2ag

2agnn /Mg//Mg/ZsZ .

4. E»º{ø» A›©õÚ® Gߣx ¯õx?

What is dry corrosion?

5. øíiμáß – BU]áß G›Áõ² ªßP»zvß SøÓ£õkPÒ ¯õøÁ?

What are the limitations of 22 OH fuel cell?

6. Aq¨¤ÍÄ ÷Áv°øÚ JßøÓ GÊxP.

Write a nuclear fission reaction.

Question Paper Code : 77106 T

AU C

OE

QP

WK 10

77106 T 2

7. J¸ ö£õ¸Îß E¯º öÁ¨£® GØS® ußø© GߣuøÚ Áøμ¯Ö.

Define refractoriness.

8. ÷£õ÷μõ]¼U÷Pm (Boro silicate) Psnõi°ß Tmk¨ ö£õ¸mPÒ ¯õøÁ?

What is the composition of Boro silicate glass?

9. {»UP›°À P¢uP® C¸¨£uÚõÀ HØ£k® SøÓ£õkPÒ ¯õøÁ?

What is the drawback of sulphur in coal?

10. CNG GßÓõÀ GßÚ? Auß öÁ¨£ ©v¨¤øÚz ÷uõμõ¯©õPU TÖ.

What is CNG? Mention its calorific value.

PART B — (5 16 = 80 marks)

11. (a) (i) Gvº©øÓ \ÆÅk £μÁÀ GßÓõÀ GßÚ? CzuzxÁ® EÁº}›¼¸¢x

Pøμ¢xÒÍ E¨¦UPøͨ ¤›UP GÆÁõÖ EuÄQÓx? Auß

ö\´•øÓ°øÚz uS¢u ÂÍUP¨£hzxhß ÂÁ›.

(ii) öPõvP»ßPÎÀ ö\vÀPÒ £iuÀ GßÓõÀ GßÚ? AøÁ GÆÁõÖ

E¸ÁõQßÓÚ? AÆÁõÖ £iuø»z ukUP ÁÀ» •øÓPÒ CμsiøÚ

ÂÍUSP.

(i) What is reverse osmosis? How is it useful for desalination of brackish water? Explain with a diagram. (2 +2 + 4)

(ii) What are sludge and scale in boilers? How are they formed? Suggest any two methods to prevent their formation. (2 + 2 + 4)

Or

(b) (i) "â÷¯õø»mPÒ' GߣøÁ ¯õøÁ? AøÁ GÆÁõÖ PiÚ }øμ

ö©ßÜμõUSu¼À £¯ß£kQÓx GߣuøÚz uS¢u ÂÍUP¨£hzxhß

ÂÁ›.

(ii) öPõvP»ßPÎÀ uspøμ EÒÎmk¨ £uÚªkuÀ Gߣx ¯õx?

A®•øÓ°À CμsiøÚ Euõμn[PÐhß ÂÍUSP.

(i) What are zeolites? How are they used in softening of water? Use a diagram for your explanation? (2 + 2 + 4)

(ii) Explain the internal conditioning of water? Take two examples for your explanation. (6 + 2)

12. (a) (i) P»ªß AÊzu® ©ØÖ® ªßÁõ´ AÊzu® GߣuøÚ ÂÁ›UP. J¸

ªßuPmiß ªßÁõ´ AÊzuzvøÚU PshÔ¯ EÒÍ •øÓ°øÚ

ÂÍUSP.

(ii) E÷»õP A›©õÚzøuU Pmk¨£kzxÁuØPõP E›¯ ö£õ¸øÍz ÷uºÄ

ö\´Áx® Auß ÁiÁø©¨¦® GÆÁõÖ •UQ¯©õÚøÁ GÚ ÂÍUSP.

AU C

OE

QP

WK 10

77106 T 3

(i) Explain the terms, cell potential and single electrode potential and describe the method of determination of electrode potential. (4 + 4)

(ii) Discuss the importance of design and material selection in controlling corrosion. (8)

Or

(b) (i) ªß ÷Áv Á›ø\ GßÓõÀ GßÚ? Auß C¸ |øh•øÓ¨ £¯ß£õkPøÍ

GÊxP.

(ii) ªßÛÀ»õ •»õ® §_uÀ Gߣx ¯õx? C®•øÓ ‰»® {UPÀ GÆÁõÖ

•»õ® §\¨£kQÓx?

(i) What is electrochemical series? Write any two of its practical applications. (2 + 6)

(ii) What is electroless plating? Explain the plating of Nickel by this process. (2 + 6)

13. (a) (i) JÎ÷ÁõÀmhõ ªßP»® Gߣx ¯õx? Auß ö\¯À£õmiøÚ uUP¨

£hzxhß ÂÍUSP.

(ii) PõØÓõØÓÀ GÆÁõÖ £¯ß£kzu¨£kQÓx? Auß £¯ßPøͲ®

SøÓ£õkPøͲ® GÊxP.

(i) What is a photovoltaic cell? Explain the construction and working of a photovoltaic cell with a diagram. (2 + 6)

(ii) How is wind energy harnessed? What are its advantages and limitations? (2 + 3 + 3)

Or

(b) (i) Aq Eø»°ß Aø©¨ø£²® Auß ö\¯À£õkPÒ ©ØÖ®

E£÷¯õP[PøͲ® ÂÍUSP.

(ii) {UPÀ–Põm]¯® ªßP»zvß Aø©¨¤øÚ GÊxP. ÷©¾® Ax

GÆÁõÖ ö\¯À£kQÓx GÚÄ® £¯ß£õmkPøͲ® GÊxP.

(i) Explain the construction, working and uses of a nuclear reactor with a neat diagram. (3 + 5)

(ii) What are the compounds of Ni-cd battery? Explain its construction and advantages. (2 + 2 + 4)

14. (a) (i) Eμõ´ ö£õ¸mPÒ Gß£Ú ¯õøÁ? AøÁ GÆÁõÖ

ÁøP¨£kzu¨£kQßÓÚ? JÆöÁõ¸ ÁøPUS® H÷uÝ® C¸ Eμõ´Ä¨

ö£õ¸mPÎß ußø©PøÍU TÖ.

(ii) ÷£õºm÷»sm ]ö©ßm GÆÁõÖ u¯õ›UP¨£kQÓx? Auß

ÂÍUP¨£hzxhß ÂÁ›UP.

AU C

OE

QP

WK 10

77106 T 4

(i) What are abrasives? How are they classified? Explain the properties of any two in each category. (2 + 2 + 4)

(ii) How is Portland cement manufactured? Give a neat diagram of the process. (4 + 4)

Or

(b) (i) E¯º öÁ¨¦ HØS® ö£õ¸mPÎß •UQ¯¨ £s¦PÒ |õßQøÚ ÂÍUSP.

(ii) Psnõi GÆÁõÖ u¯õ›UP¨£kQÓx? Auß ö\¯À•øÓø¯ uS¢u

÷Áv ÂøÚPøÍU öPõsk ÂÁ›UP. ÷©¾® uS¢u ÂÍUP¨£hzvøÚU

öPõkUP.

(i) Describe any four important properties of refractories. (4 2)

(ii) How is glass manufactured? Explain the process giving chemical reactions involved. Give a neat diagram also. (2 + 4 + 2)

15. (a) (i) J¸ H›ö£õ¸Îß ö©õzu öÁ¨£ ©v¨¤øÚ²® {Pμ öÁ¨£

©v¨¤øÚ²® Áøμ¯Ö. ÷©¾® 84% Põº£ß, 1.5% P¢uP®, 6% ø|mμáß,

5.5% øíiμáß ÷©¾® 8.4%. BU]áß öPõsh J¸ H› ö£õ¸Îß

ö©õzu ©ØÖ® {Pμ öÁ¨£©v¨¤øÚ²® GÆÁõÖ PnUQkÁõ´?

(ii) {»UP›ø¯z ÷uõμõ¯¨ £S¨£õ´Ä ö\´uÀ GßÓõÀ GßÚ? AvÀ

GßÚöÁÀ»õ® Bμõ¯¨£kQÓx? AÁØÔß •UQ¯zxÁ® ¯õx?

(i) Define gross and net calorific values. Calculate gross and net calorific values of a coal sample containing 84% carbon, 1.5% sulphur, 6% nitrogen, 5.5% hydrogen and 8.4% oxygen. (3 + 5)

(ii) What is meant by proximate analysis of coal? What are the quantities estimated in this analysis and their significance? (2 + 6)

Or

(b) (i) E÷»õP Â¯Ø PÀP› Gߣx ¯õx? Ax {»UP›ø¯ Âh G¢u ÁøP°À

E¯º¢ux? Ax GÆÁõÖ u¯õº ö\´¯¨£kQÓx?

(ii) ö£m÷μõÀ Gg]Ûß EÒöÁi¨¦ Gߣx ¯õx? Ax GÆÁõÖ

E¸ÁõQÓx? ÷©¾® Ax GÆÁõÖ ukUP¨£kQÓx?

(i) What is metallurgical coke? How is it superior than coal? Describe any one method of manufacturing metallurgical coke. (2 + 2 + 4)

(ii) What is meant by knocking in petrol engines? How is knocking prevented? (4 +4)

—————————

AU C

OE

QP

wk11

Reg. No. :

B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2016.

Second Semester

Civil Engineering

CY 6251 T — ENGINEERING CHEMISTRY – II

(Common to Mechanical Engineering)

(Regulations 2013)

Time : Three hours Maximum : 100 marks

Answer ALL questions.

PART A — (10 × 2 = 20 marks)

1. öPõvP»ß usp›ß ÷uøÁ¯õÚ Cμsk £s¦PøÍ TÖP.

Mention any two requirements of boiler feed water.

2. öPõvP»ß usp›ß PõÀ÷Pß ^μø©¨¦ GßÓõÀ GßÚ?

What is calgon conditioning of water?

3. ªßÚØÓ •»õ® §_uÀ GßÓõÀ GßÚ?

What is electroless plating?

4. PõÀÁõÛU A›©õÚzøu uUP Euõμnzxhß ÂÍUSP.

With suitable example, explain the concept of galvanic corrosion.

5. PõØÖ BØÓ¼ß |ßø©PÒ ¯õøÁ?

Point out the advantages of wind energy.

6. DÝø»PÎß •UQ¯zxÁ® ¯õx?

What is the significance of breeder reactor?

7. â¨\® Hß ]ö©sm Ehß P»UP¨£kQÓx?

Why is gypsum added to cement?

Question Paper Code : 80310 T

AU C

OE

QP

wk11

80310 T 2

8. E¸Põ ö£õ¸mPÒ (öÁ¨£® uõ[PÁÀ» ö£õ¸mPÒ) GÆÁõÖ ÁøP¨£kzu¨

£kQßÓÚ? ÁøPUöPõ¸ GkzxUPõmk u¸P.

Classify refractories. Give one example each.

9. ^m÷hß Gsøn Áøμ¯Ö.

Define cetane number.

10. £÷¯õ–jéÀ GßÓõÀ GßÚ? Auß |ßø©PÒ ¯õøÁ?

What is bio-diesel? Mention its advantages.

PART B — (5 16 = 80 marks)

11. (a) (i) uspøμ ã÷¯õø»m öPõsk ö©ßø©¯õUS® •øÓø¯ ÂÍUSP.

(ii) EÁº }›À C¸¢x Gvº \ÆÅk £μÁÀ •øÓ°À GÆÁõÖ E¨¦

}UP¨£kQÓx?

(i) Explain the Zeolite softening process of water. (8)

(ii) Describe the reverse osmosis method for the desalination of

brackish water. (8)

Or

(b) (i) A¯Û¨£›©õØÓ •øÓ°À }›À C¸¢x GÆÁõÖ PÛ©¨ö£õ¸mPÒ

}UP¨£kQßÓÚ Gߣøu ÂÍUSP.

(ii) PõìiU Eøhu¼ß Põμn[PÒ, ÂøÍÄPÒ ©ØÖ® Aøu ukUS®

•øÓPøÍ ÂÁ›UPÄ®.

(i) Explain the demineralization of water by ion exchange process. (8)

(ii) Discuss the causes, problems and prevention of caustic

embrittlement. (8)

12. (a) (i) ÷Áv A›©õÚzvß öPõÒøP ©ØÖ® ö£õÔ •øÓPøÍ ÂÍUPÄ®.

(ii) v¯õP ÷|ºªß•øÚ •øÓ ©ØÖ® Dº¨¦ ªß Gvº•øÚ •øÓPÎß

‰»® A›©õÚ® GÆÁõÖ Pmk¨£kzu¨£kQÓx?

(i) Explain the principle and mechanism of chemical corrosion. (8)

(ii) Describe the sacrificial anode and impressed current cathode

method of corrosion control. (8)

Or

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OE

QP

wk11

80310 T 3

(b) (i) ö£°sm GßÓõÀ GßÚ? Auß £Sv¨ö£õ¸mPÒ, AÁØÔß £oPøÍ

uUP Euõμnzxhß ÂÍUSP.

(ii) uõªμ ªß•»õ® §_uø» ÂÁ›UPÄ®.

(i) What is paint? Explain its constituents and functions. (8)

(ii) Give a detailed account on copper electroplating. (8)

13. (a) (i) J¸ ö£õ¸zu©õÚ Áøμ£hzxhß ö©ß }º Aq Eø» ©ØÖ® Auß

£õP[PÒ £ØÔ ÂÁ›UPÄ®.

(ii) øímμáß–BUêáß G›ö£õ¸Ò ö\À¼ß Pmk©õÚ® ©ØÖ® ÷Áø»

ö\´²® •øÓ £ØÔ ÂÍUPÄ®.

(i) Describe the components of a light water nuclear reactor with a suitable diagram. (8)

(ii) Explain the construction and working of Hydrogen-Oxygen fuel cell. (8)

Or

(b) (i) `›¯ JÎ BØÓø» £ØÔ ÂÁ›UPÄ®.

(ii) ÷uøÁ¯õÚ \©ß£õkPÐhß, {UPÀ Põmª¯® ÷£mh›°ß Pmk©õÚ®

©ØÖ® ÷Áø» ö\´²® •øÓ £ØÔ ÂÍUPÄ®.

(i) Write a note on solar energy. (8)

(ii) With the help of required cell reactions, describe the construction and working of nickel-cadmium batteries. (8)

14. (a) (i) E¸Põ ö£õ¸mPÒ (öÁ¨£® uõ[PÁÀ» ö£õ¸mPÒ) GßÓõÀ GßÚ?

AÁØÔß HuõÁx ‰ßÖ •UQ¯ £s¦PøÍ £ØÔ ÂÍUPÄ®.

(ii) Psnõi GßÓõÀ GßÚ? AuøÚ u¯õ›US® •øÓø¯ ÂÁ›UPÄ®.

(i) What are refractories? Explain any three of their important properties. (8)

(ii) What is glass? Discuss the manufacture of glass. (8)

Or

(b) (i) Dμ{ø» •øÓ°À ]ö©sm u¯õ›US® •øÓø¯ ÂÁ›UPÄ®.

(ii) ÷u´US® ö£õ¸mPÒ (abrasives) GßÓõÀ GßÚ? AøÁ GÆÁõÖ

ÁøP¨£kzu¨£kQßÓÚ? JÆöÁõ¸ ÁøPUS® C¸ GkzxUPõmk u¢x

AÁØÔß £s¦ ©ØÖ® £¯ßPøÍ TÓÄ®.

(i) Describe the manufacture of cement by wet process. (8)

(ii) What are abrasives? How are they classified? Give any two examples for each category with their properties and uses. (8)

AU C

OE

QP

wk11

80310 T 4

15. (a) (i) G›ö£õ¸Ò öÁÎ÷¯ØÓ Áõ²ÂøÚ (Fuel gas) Bº\m •øÓ¨£i B´Ä

ö\´²® •øÓø¯ ÂÁ›UPÄ®.

(ii) RÌPshÁØøÓ £ØÔ ]Ö SÔ¨¦ ÁøμP.

(1) £ØÓøÁ¨¦ öÁ¨£{ø»

(2) öÁiUS® Á쮦.

(i) How will you carry out flue gas analysis by Orsat method? Explain. (8)

(ii) Write short notes on the following :

(1) Ignition temperature

(2) Explosive range (8)

Or

(b) (i) EØ£zv Áõ² GßÓõÀ GßÚ? EØ£zv Áõ²øÁ u¯õ›US® •øÓø¯

ÂÍUPÄ®.

(ii) P›¯õuÀ (Põº£÷|÷\åß) GßÓõÀ GßÚ? Bm÷hõ–÷íõ¨©ß

•øÓ°À E÷»õP¯À PÀP› u¯õ›zuø» ÂÁ›UPÄ®.

(i) What is producer gas? Discuss the manufacture of producer gas. (8)

(ii) What is carbonization? Describe the Otto-Hoffman’s process for

preparing metallurgical coke. (8)

–––––––––––––

AU C

OE

QP

Ws2

Reg. No. :

B.E./B.Tech. DEGREE EXAMINATION, DECEMBER 2015/JANUARY 2016.

Second Semester

Civil Engineering

CY 6251 T — ENGINEERING CHEMISTRY — II

(Common to Mechanical Engineering)

(Regulation 2013)

Time : Three hours Maximum : 100 marks

Answer ALL questions.

PART A — (10 2 = 20 marks)

1. ~øμzuÀ GßÓõÀ GßÚ?

What is foaming?

2. £iuÀ ©ØÖ® ÷\Ö CÁØÔØS Cøh÷¯¯õÚ ÷ÁÖ£õkPøÍ GÊxP.

Bring out the differences between scale and sludge.

3. ªß•»õ® §_u¼ß uzxÁzøu GÊxP. Euõμn® u¸P.

Write the principle involved in electroless plating. Give an example.

4. ªß ÷Áv°¯À Á›ø\°ß £¯ßPøÍ J¸ Euõμnzxhß GÊxP.

Illustrate the use of electrochemical series giving an example.

5. PõŸ¯ ÷\ª¨¦ ªßP»zvÀ ªßÛÓUPzvß ÷£õx {PÊ® ÷Áv ÂøÚø¯ GÊxP.

Write the chemical reaction involved during discharging of lead storage battery.

6. \õ¯[PÎß EmTÖPÒ ©ØÖ® AÁØÔß ö\¯À£õkPøÍ GÊxP.

Mention the constituents and their functions of paints.

Question Paper Code : 97220 T

AU C

OE

QP

Ws2

97220 T 2

7. ÁøÍ¢x öPõkUPõ ußø© ©ØÖ® AvP Gøh°À ÁøÍ¢x öPõkUPõ ußø© (RUL)

Gߣøu Áøμ¯Ö

Define refractoriness and RUL.

8. H÷uÝ® Cμsk PsnõiPÎß ÁøPPøͲ® Auß £s¦PøͲ® GÊxP.

Name any two types of glass and their properties.

9. {Pμ P÷»õ› ©v¨¦ ö©õzu P÷»õ› ©v¨ø£ Âh SøÓÁõP C¸¨£x Hß? AøÁ

G¨÷£õx \©©õP C¸US®?

Why is net calorific value less than gross calorific value? When are they equal?

10. {»UP› ©ØÖ® PØP› CÁØøÓ ÷ÁÖ£kzxP.

Differentiate coal and coke.

PART B — (5 16 = 80 marks)

11. (a) (i) EÒ |hzxuÀ •øÓ GßÓõÀ GßÚ? AÁØÔß ÁøPPøÍ

Euõμnzxhß ÂÍUSP.

(ii) uõx }UP ö\¯À£õmiß ÂøÚ ÁÈ •øÓ ©ØÖ® ö\¯À£õmiøÚ

ÂÍUSP.

(i) What is internal treatment? Explain its types with examples. (8)

(ii) Explain the mechanism and working of demineralization process. (8)

Or

(b) (i) Gvº \ÆÅk £μÁÀ GßÓõÀ GßÚ? Auß ö\¯À£õmiøÚ²® ©ØÖ®

£¯ßPøͲ® GÊxP.

(ii) öPõvP»ß usp›ß ÷uøÁøPøÍ GÊxP.

(i) What is reverse osmosis? Explain the process and its application. (8)

(ii) What are the requirements of boiler feed water? (8)

12. (a) (i) ªß ÷Áv°¯À A›¨¤ß ÂøÚ ÁÈ •øÓø¯ ÂÍUSP.

(ii) v¯õP ÷|º •øÚ¨ £õxPõ¨¦ •øÓ°øÚ £¯ß£kzv A›¨¦

{PÌÂøÚ Pmk¨£kzxuø» ÂÁ›.

(i) Explain the mechanism of electrochemical corrosion. (8)

(ii) Explain the sacrificial anodic protection method of controlling corrosion. (8)

Or

AU C

OE

QP

Ws2

97220 T 3

(b) (i) ö|ºßìm \©ß£õmiøÚ u¸Âzx AÁØÔß £¯ßPøÍ ÂÍUSP.

(ii) ªßÁõ°ß BØÓÀ SÔzx ]Ö SÔ¨¦ GÊv, Auß ÷uõØÓ®, AÍÃk

©ØÖ® £¯ßPøÍ GÊxP.

(i) Derive the Nernst equation explain its use. (8)

(ii) Write a note on electrode potential, its origin, measurement and uses. (8)

13. (a) RÌUPshÁØøÓ ÂÍUSP

(i) AqUP¸ ¤Í¨¦ ©ØÖ® CønÄ

(ii) AqUP¸ Eø»°ß ÁøP¨£õkPÒ

Explain the following: (16)

(i) Nuclear fission and fusion

(ii) Classification of nuclear reactor. Or

(b) RÌUPshÁØøÓ ÂÁ›

(i) PõØÖ \Uv ©ØÖ® Auß ÷\ª¨¦

(ii) øímμáß BUêáß G›ö£õ¸Ò ªßP»®.

Discuss the following: (16)

(i) Wind energy and its harvest

(ii) Hydrogen oxygen fuel cell.

14. (a) (i) ]ö©sm CÖSuÀ ©ØÖ® öPmi£kuø» ÂÍUSP

(ii) Eμõ´Ä ö£õ¸mPÒ ¯õøÁ? AøÁ GÆÁõÖ ÁøP¨£kzu¨£kQßÓÚ?

(i) Explain the setting and hardening of cement. (8)

(ii) What are abrasives? How are they classified? (8) Or

(b) (i) ÷£õºm÷»sm ]ö©sm u¯õ›US® •øÓ°øÚ ÂÁ›.

(ii) ÁøÍ¢x öPõkUPõzußø©°ß •UQ¯ £s¦PøÍ GÊxP.

(i) Explain the manufacture of Portland cement. (8)

(ii) Explain the important properties of refractories. (8)

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OE

QP

Ws2

97220 T 4

15. (a) (i) {»UP›°ß ÷uõμõ¯ ©ØÖ® •iÁõÚ B´ÄPÐUS Cøh÷¯¯õÚ

÷ÁÖ£õkPøÍ GÊxP.

(ii) BU÷hß Gsøn AvP›US® ÷£õx ö£m÷μõÀ GÆÁõÖ

^ºv¸zu¨£kQÓx?

(i) Differentiate proximate and ultimate analysis of coal. (8)

(ii) How does reforming of petrol increase the octane number? (8) Or

(b) (i) L¨Ñ Áõ²UPÎß ÷\õuøÚ •øÓPøÍ ÂÁ›.

(ii) }ºÁõ²UPÎß u¯õ›¨¦ ©ØÖ® £¯ßPøÍ GÊxP.

(i) Explain a method for the analysis of flue gas. (8)

(ii) Write about the production and applications of water gas. (8)

—————————

AU C

OE

QP

Ws 5

Reg. No. :

B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2015.

Second Semester

Civil Engineering

CY 6251 T — ENGINEERING CHEMISTRY — II

(Common to Mechanical Engineering)

(Regulations 2013)

Time : Three hours Maximum : 100 marks

Answer ALL questions.

PART A — (10 2 = 20 marks)

1. }μõ öPõvP»ßPÎÀ ÃÌ£iÄPÒ E¸ÁõÁuõÀ ÂøͲ® ÷PkPÒ CμsiøÚU

TÖP.

Mention any two disadvantages of formation of deposits in steam boilers.

2. £iP Cøh ›\À GßÓõÀ GßÚ?

What is caustic embrittlement?

3. PõÀÁõÛU ªßP»ßPÎÀ |øhö£Ö® ÷ÁvÂøÚø¯ GÊxP.

Write the chemical reaction that takes place in a galvanic cell.

4. ÷Áv A›©õÚ® GßÓõÀ GßÚ?

What is chemical corrosion?

5. 23692 U &ß £À÷ÁÖ EmP¸ ¤Í¨¦ ÂøÚPøÍ GÊxP.

Write all the nuclear fission reactions of 23692 U .

6. PõØÖ BØÓÀ E¸ÁõS® Âuzøu GÊxP.

Write how wind energy is generated.

Question Paper Code : 27181 T

AU C

OE

QP

Ws 5

27181 T 2

7. ÷u´US® ö£õ¸ÒPÒ GÆÁõÖ ÁøP¨£kzu¨£kQßÓÚ?

How are abrasives classified?

8. öÁÒøÍ ]ö©sm GßÓõÀ GßÚ?

What is white cement?

9. {»UP›°ß P÷»õ› Á¾ GßÓõÀ GßÚ?

What is calorific value of coal?

10. Eø» ÁÎ (producer gas), Aøμ}º Áõ² (water gas) GßÓõÀ GßÚ?

What is producer gas and water gas?

PART B — (5 16 = 80 marks)

11. (a) (i) öPõvP»ß }¸USz ÷uøÁ¯õÚ {£¢uøÚPÒ ¯õøÁ?

(ii) A¯Û £›©õØÓ •øÓ°À PiÚ }øμ ö©ßø©¯õUS® Âuzøu £h®

Áøμ¢x ÂÁ›.

(i) What are the requirements of boiler feed water? (6)

(ii) Draw a suitable diagram and describe the ion exchange process for the softening of hard water. (10)

Or

(b) (i) Dμ }μõÂ, ~øμzuÀ BQ¯øÁ £ØÔ ]ÖSÔ¨¦ ÁøμP.

(ii) PõÀPß ©ØÖ® £õìL÷£m Pmk¨£kzxuÀ •øÓPÎÀ öPõvP»ß }øμ

GÆÁõÖ y´ø©¨£kzu»õ®?

(i) Write a brief note on priming and foaming. (8)

(ii) How can the boiler feed water be purified by calgon and phosphate conditioning? (8)

12. (a) (i) ªß•øÚ ªßÚÊzu® GßÓõÀ GßÚ? Cx GuÚõÀ HØ£kQÓx?

›ÁõP ÂÁõvUPÄ®.

(ii) JØøÓ ªß•øÚ ªß AÊzuxUPõÚ ö|ºßìm \©ß£õmøh u¸Â.

(i) What is electrode potential? Discuss the cause of electrode potential. (8)

(ii) Derive the Nerns’t equation for single electrode potential. (8)

Or

(b) (i) ö£°ßiß TÖPÒ £ØÔ ÂÍUP©õP GÊxP.

(ii) uõªμzøu ªß•»õªkuÀ SÔzx ÂÍUP©õP ÂÁõvUPÄ®.

(i) Write in detail about the constituents of paint. (10)

(ii) Discuss in detail about the electroplating of copper. (6)

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OE

QP

Ws 5

27181 T 3

13. (a) (i) EmP¸ ¤øn¨¦ ÂøÚ SÔzx ÂÍUSP.

(ii) ö©ß}º EmP¸ÂøÚ {PÌP»® ö\¯À£k® Âuzøu Áøμ£hzxhß

ÂÁ›.

(i) Describe the nuclear fusion reaction. (8)

(ii) Describe the functioning of a light water nuclear reactor using a suitable diagram. (8)

Or

(b) (i) ö»m Aª» ªßP»ß £ØÔ Â›ÁõP GÊxP.

(ii) vh{ø» ¼zv¯® ªßP»ß GÆÁõÖ E¸ÁõUP¨£kQÓx? Ax

ö\¯À£k® Âuzøu ÂÍUPÄ®.

(i) Write in detail about lead acid battery. (8) (ii) How is solid state lithium battery constructed? Describe its

functioning. (8)

14. (a) (i) öÁ¨£® uõ[P ÁÀ» ö£õ¸ÒPÎß £s¦PÒ ¯õøÁ?

(ii) A¾ªÚõ ©ØÖ® ÷©UÚø\m `øÍU PØPÒ u¯õ›¨ø£¨ £ØÔ GÊxP.

(i) What are the important properties of refractories? (10) (ii) Write about the preparation of alumina and magnesite bricks. (6)

Or

(b) (i) ]ö©sm öPmi¨£kuÀ, PiÚ©øhuÀ £ØÔ ÂÍUSP.

(ii) Psnõi GÆÁõÖ u¯õ›UP¨£kPÔx?

(i) Describe about the hardening and setting of cement. (10)

(ii) How is glass manufactured? (6)

15. (a) (i) {»UP›°ß Asø©¨ £S¨¤ß (proximate analysis) •UQ¯zxÁ®

GßÚ?

(ii) Km÷hõ&íõ¨÷©ß •øÓ°À ö©mh»ºâUPÀ {»UP› (Metallurgical coke) u¯õ›US® ö\¯À•øÓø¯ ÂÁ›.

(i) What is the importance of proximate analysis? (8) (ii) Describe the Otto Hoffman process for the manufacture of

metallurgical coke. (8) Or

(b) RÌPshøÁ SÔzx ]ÖSÔ¨¦ ÁøμP.

(i) AÊzu¨£mh C¯ØøP Áõ² (Compressed natural gas)

(ii) \Uv \õμõ¯® (Power alcohol).

Write short notes on the following : (i) Compressed natural gas (6) (ii) Power alcohol. (10)

————––––——