initial commit / add all books

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diff --git a/1538/CH12/EX12.1/Ex12_1.sce b/1538/CH12/EX12.1/Ex12_1.sce
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+//example-12.1

+//page no-382

+//given

+//degree of polymerization of styrene

+DOP=10000

+//formula of styrene= C8H8

+//molecular weight of styrene monomer

+Mm=12*8+1*8

+//molecular weight of polymer

+Mp=DOP*Mm

+printf ("the molecular weight of styrene polymer is %d",Mp)

diff --git a/1538/CH12/EX12.2/Ex12_2.sce b/1538/CH12/EX12.2/Ex12_2.sce
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+//example-12.2

+//page no-382

+//given

+//degree of polymerization of teflon

+DOP=100000

+//chemical formula of teflon is C2F4

+//molecular weight of monomer teflon

+Mm=2*12+4*19

+//molecular weight of teflon polymer

+Mp=DOP*Mm

+//molecular weight of polythene monomer i.ee C2H4

+MmP=2*12+4*1

+//molecular weight of polythene polymer

+MpP=DOP*MmP

+printf ("molecular weight of PTFE anf Polythene are %d and %d",Mm,MpP)

+//ratio of molecular weight of PTFE and Polythene

+R=Mp/MpP

+printf ("the ration of molecular weight of PTFE and Polythene having same DOP is %f",R)

diff --git a/1538/CH12/EX12.3/Ex12_3.sce b/1538/CH12/EX12.3/Ex12_3.sce
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index 000000000..f42a27c84
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+//example-12.3

+//page no-396

+//given

+//the molecular weight of polyisoprene monomer

+Mm=68  //gm

+//after vulcanisation with sulphur, it is observedthat the 2 molecules of isoprene monimer require 2 molecules of sulphur

+//hence for full cross linking ,(68*2) gm of isoprene requires (32*2)gm of sulphur. therefore 68kg of isoprene requires

+M=32*2*68/68/2  //kg of sulphur

+printf ("the weight of sulphur required for cross link polymerization of polyisoprene is %d of sulphur",M)

+printf ("the fully cross linked product will be EBONITE")

diff --git a/1538/CH12/EX12.4/Ex12_4.sce b/1538/CH12/EX12.4/Ex12_4.sce
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index 000000000..d1089b0e4
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+//example-12.4

+//page no-396

+//given

+//molecular weight of butdiene,isoprene,sulhur and carbon black are

+MB=4*12+6*1

+MI=68

+MS=32

+MC=12

+//percentages of diiferent constituents in rubber

+PB=27/MB

+PI=51/MI

+PS=16/MS

+PC=6/MC

+//percentage of coss linking

+percent=PS/(PI+PB)*100

+printf ("the percentage of cross linking is %d",percent)