MCQ
Which of the following statement(s) is/ are correct?
- AAir is a mixture of many gases.
- BAir is a homogeneous mixture.
- CAir is a pure substance.
- ✓Only $(a)$ and $(b)$ are correct.
Air is not a pure substance. A pure substance refers to an element or a compound and not a mixture. Air is a homogeneous mixture.
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S.No.
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Column-$I$ (Components of diet)
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S.No.
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Column-$II$ (Functions)
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$(A)$
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Fats
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$(p)$
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Keeps our skin and eyes healthy.
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$(B)$
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Vitamin $A$
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$(q)$
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Helps our body to use calcium for bones and teeth.
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$(C)$
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Vitamin $D$
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$(r)$
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Sources of energy and essential fatty acids in diet.
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$(D)$
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Water
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$(s)$
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Act as a lubricant.
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