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TED (10)* 1003 B

(REVISTON - 2010)

(i) C6ilr2o6 (ii) NarCC),

(c) Caiculate the pH of 0.01 N HCl.

(d) What is a radical ? Give 2 examples.

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Reg. No.

Signature

(2x2:4)

(iii) CaCO- {iv) H-SO. 4JZ.,

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FIRST SEMESTER DIPLOMA EXAMINATION IN ENGINEERING/TECHNOLOGY - OCTO9ER, 2Arc

APPLIED SCIENCE - I (Chemistry)

. (Common to all except DCP and CABM)

fTime:1% hours

Maximum marks : 50)

PART - A(Maximum marks : 4)

Marks

(Answer the following questions in one or two serfienoes. Fah question caries 2 marks.)

(a) Define hard water.

(b) Calculate the oxidation number of Mrt in KMnOn.

PAK|- B(l\4aximum marks : 16)

(Answer any twoln// questions. Each question carries 8 mnrks.)

(a) Calculate the weight of HCI required to dissolve l0g of CaC-'O.,.

(At. Wt of Ca = 40" S = 32). 4

(b) Describe neutralisation according to Arrhenius concept eind Lewis concept. 4

(a) Define pH and mention any 3 applications of pll. 4

(b) Describe the sterilization of water using bleaching powder. 4

(a) Define equivalent weight of an acid. Calculate the equivalent weight of HNO'. 4

(b) Which indicator is suitable for the titration of acCIic acid against NaOH and Why ? 4

PAK|- C

(Maximum marks : 30)

(Answer ctne full question from each unit. Each full question carries 15 marks.)

UNir - I

(a) Describe ion exchange method for removing permanent hardness of water. 4

(b) Calculate the molecular mass of the following compounds.

II

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Marks

JVI (a) Describe the disadvantages of using hard water in steam generating boilsr'

(b) 500 ml of a decinormal solution is diluted by adding 200 rnl of water. What rs

the normality of the resulting solution ?

(c) Give an acc,ount of applications of carbon nanotubes.

(d) Define oxidation according to electronic concept. Write down 3 chemical

equations which involve oxidation process.

UNtr - II

(a) Name the different sterilization methods used for the purification of water.

(b) Expiain higlr pressure carton monoxide deposition method for synthesising

carbon nano tube.

(c) Draw a flow chart for the production of potable water for municipal supplyl

(d) Distinguish between an atom and a molecule.

On

VIII (a) Enumerate any four properties of carbon nano tubes. 4

O) What is a carbon nano tube ? Name the varities of carbon nano tubes. 3

(c) What are the characteristics of potable water ? 4

(d) Give reason for the temporary hardness of water and how can it be removed - 4

VII

4

4

4

4

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