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01. Detergents used for cleaning clothes and utensils contain?
A. bicarbonates B. bismuthates
C. sulphonates D. nitrates

Answer and Explanation

Answer: sulphonates

Explanation:
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02. Paper is manufactured by
A. Wood and resin B. Wood, sodium and bleaching powder
C. Wood, calcium, hydrogen sulphite and resin D. Wood and bleaching powder

Answer and Explanation

Answer: Wood, calcium, hydrogen sulphite and resin

Explanation:
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