Question
Write a short note on how first silk industry began in China.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
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Column $I$
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Column $I$
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$(a)$
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Yeast
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$(i)$
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Earthworm
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$(b)$
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Diaphragm
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$(ii)$
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Gills
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$(c)$
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Skin
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$(iii)$
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Alcohol
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$(d)$
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Leaves
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$(iv)$
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Chest cavity
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$(e)$
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Fish
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$(v)$
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Stomata
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$(f)$
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Frog
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$(vi)$
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Lungs and skin
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$(vii)$
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Tracheae
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Column I
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Column II
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$a.$
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Inorganic impurities
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$i.$
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Phosphorus and nitrogen
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$b.$
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Organic impurities
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$ii.$
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Nitrates and phosphates
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$c.$
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Nutrients
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$iii.$
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Cholera and typhoid
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$d.$
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Bacteria
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$iv.$
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Pesticides and herbicides
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