50 important questions based on ITI SYLLABUS junior instructor in fashion design and technology

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answer of 9th question is given as HCL because metallic salt can be removed by using HCL or sulphuric acid in souring of cotton.
The chemical used in scouring of cotton is -NaOH(Sodium hydroxide -also known as caustic soda)

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Helpful video please put more videos daily

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Thanku so much...will upload more videos

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Super

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