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प्रश्न
What's the solution?
We need to rub salt on a corncob, but only salt crystals are available.
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उत्तर
We can pound salt crystals. Either we can use mortar pestle or we can also crush the crystals of salt in a grinder. Such powdered salt can be easily applied on the corncob.
संबंधित प्रश्न
The molecules can move freely anywhere in
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- maximum interparticle attractions ?
- minimum spaces between particles ?
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Name a metal which has a low melting point.
There are three substances X, Y and Z. The substance X does not have a fixed melting point or boiling point and it still shows the individual properties of its constituents. The substance Y is a pure substance which occurs in nature as such. The substance Y has a fixed melting point and boiling point but it cannot be broken down into simpler substances by any chemical means. The substance Z is also a pure substance whose properties are entirely different from those of its constituents. The substance Z can, however, be divided by electrolysis into two substances which belong to the same class of substances as Y.
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- What type of substance could Y be ? Name one substance like Y.
- What type of substance could Z be ? Name one substance like Z.
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Fill in the following blanks with suitable words :
The gases of air can be separated by fractional distillation of liquid air because they have different..............
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