Use the following flow-chart to write a paragraph on Soap Preparation.
Collect neem oil and caustic soda----mix them with water---boil the mixture for sometime—cool it---add 300gms of sodium silicate,10 cc. of soap scent and 2 gms of soap colour and --mix them up---keep in that condition for the whole day---next day soap cakes are to be cut ----they are ready for use.
[আরও দেখুন, CLASS VII , CLASS -VIII , CLASS-IX ]
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