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diff --git a/1427/CH1/EX1.2/1_2.sce b/1427/CH1/EX1.2/1_2.sce
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+//ques-1.2
+//Calculating hardness in three samples
+clc
+A=168;//mass of MgCO3/L (in mg)
+B1=820;//mass of Calcium Nitrate (in mg)
+B2=2;//mass of Si/L (in mg)
+C1=20;//mass of Potassium nitrate/500mL (in g)
+C2=2;//mass of CaCO3/500mL (in g)
+m1=(A/84)*100;//CaCO3 equivalent of A (in mg/L)
+m2=(B1/164)*100;//CaCO3 equivalent of B1 (in mg/L)
+m3=2*(1000/500)*1000*(100/100);//CaCO3 equivalent of C1 (in mg/L)
+printf("The hardness of sample A, B and C in ppm are %d, %d and %d\n",m1,m2,m3);
+//1 ppm = 0.07 grains/gallon
+printf(" and hardness in grains/gallon are %d, %d and %d respectively.",m1*0.07,m2*0.07,m3*0.07);