Question
List five each opaque and transparent materials.
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S.No.
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Column $A$
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S.No.
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Column $B$
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$(a)$
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Handpicking
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$(i)$
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Conversion of water vapours into liquids.
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$(b)$
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Threshing
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$(ii)$
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Separating bran from flour.
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$(c)$
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Winnowing
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$(iii)$
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Separating larger size impurities.
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$(d)$
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Sieving
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$(iv)$
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Separating butter from milk.
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$(e)$
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Sedimentation
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$(v)$
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Conversion of water into Us vapours.
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$(f)$
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Evaporation
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$(vi)$
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Separating grains from its stalks.
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$(g)$
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Condensation
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$(vii)$
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Settling of heavier components at bottom.
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$(h)$
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Churning
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$(viii)$
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Separation by wind or by blowing air.
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| Pot with bean seeds | Availability of | Seed germination | Possible reason for the observation | |||
| Air | Sunlight | Water | Prediction | Observation | ||
| $A$: In direct sunlight and without water | No | |||||
| $B$: In direct sunlight and excess water | ||||||
| $C$: In complete dark and moist soil | ||||||
| $D$: In direct sunlight and moist soil | ||||||
| $COLUMN\ I$ | $COLUMN\ II$ | ||
| $(a)$ | weather cock | $(i)$ | gases and fine dust particles |
| $(b)$ | mountaineers | $(ii)$ | sailing yacht |
| $(c)$ | fine hair inside the nose | $(iii)$ | oxygen cylinders |
| $(d)$ | smoke | $(iv)$ | direction of air flow |
| $(e)$ | wind | $(v)$ | prevent dust particles |