MCQ
Which of the following is not a man-made change?
- ABurning of fuels.
- ✓Change of day and night.
- CDrying of clothes.
- DFormation of curd from milk.
✓
Answer
Correct option: B.
Change of day and night.
Change of day and night.
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DIRECTIONS: Match Column-$I$ with Column-$II$ and select the correct answer using the codes given below the columns.
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S.No.
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Column-$I$
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S.No.
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Column-$II$
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$A.$
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The process involved when a heavier con in a mixture settles after water is added to it
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$(p)$
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Condensation.
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$B.$
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The process whereby the liquid layer above the settled heavier component is removed
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$(q)$
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Evaporation.
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$C.$
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The process in which the liquids get converted to gases (vapours) on heating.
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$(r)$
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Sedimentation.
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$D.$
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The process in which gases (vapours) get converted to liquids on cooling
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$(s)$
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Decantation.
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Read the following statements and choose the incorrect statements.
Pasteurization of milk is a:
How many poles a magnet has?
Wood is a _____ material?
The brown colored deposition on an iron box when kept in humid air for some days is called: