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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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