MCQ
A pure substance is made of:
- ✓Only one kind of atoms or molecules.
- BTwo or more kinds of molecules.
- CMixture of homogeneous substances.
- DAll of the above.
A substance is pure if its composition is constant throughout and is made up of only one type of particles i.e. atoms or molecules.
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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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$(i)$
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Railway engine
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$(a)$
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Quintal
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$(ii)$
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Packet of chilli powder
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$(b)$
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Kg
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$(iii)$
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Sack of wheat
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$(c)$
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Mg
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$(iv)$
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Huge bag of sand
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$(d)$
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$G$
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$(v)$
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Aspirin tablet ton
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$(e)$
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Metric
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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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Food for red worms.
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$(p)$
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Tea, coffee
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$B$.
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Gizzard
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$(q)$
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Structure used by red worm for grinding their food
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$C.$
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Paper mache
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$(r)$
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Paste made of paper and clay
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$D.$
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Plastics
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$(s)$
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When heated give out harmful gases.
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