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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
Fill in the following blank with suitable words :
The best evidence that the particles of matter are constantly moving comes from the studies of ................. and ...................
Which of the following statements are true for pure substances ?
- pure substances contain only one kind of particles
- pure substances may be compounds or mixtures
- pure substances have the same composition throughout
- pure substances can be exemplified by all elements other than nickel
Classify the following into solutions, suspensions and colloids :
Soda-water, Milk, Brine, Blood, Ink, Smoke in air, Chalk water mixture, Milk of Magnesia, Shaving cream, Muddy river water.
Define Foam Give one example.
One of the following does not show Tyndall effect. This one is :
What is the general name of the process by which tea-leaves are separated from prepared tea ?
Describe a method for separating a mixture of iron filings and sulphur powder other than that by using a magnet.
Differentiate between the-two characteristics of matter – ‘mass’ & ‘weight’.
The particles in the matter are extremely small and can be seen even with a powerful microscope.
Solids do not flow.
