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diff --git a/1427/CH4/EX4.4/4_4.sce b/1427/CH4/EX4.4/4_4.sce
new file mode 100644
index 000000000..a11c22f12
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+++ b/1427/CH4/EX4.4/4_4.sce
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+//ques-4.4
+//Calculating BOD of sample
+clc
+o1=920;//Initial dissolved oxygen (in ppm)
+o2=260;//Final dissolved oxygen (in ppm)
+v1=100;//Waste water (in mL)
+v2=100;//Distilled water (in mL)
+ans=(o1-o2)*((v1+v2)/v1);//BOD
+printf("BOD of given sample is %d ppm.",ans);