Advertisements
Advertisements
प्रश्न
What's the solution?
We need to rub salt on a corncob, but only salt crystals are available.
Advertisements
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
Liquids have definite volume but do not have definite shape.
Write true or false for each statement. Rewrite the false statement correctly.
Matter cannot exist in different states.
Classify the following as elements or compounds :
Iron, Iron sulphide, Sulphur, Chalk, Washing soda, Sodium, Carbon, Urea
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
What will happen if a saturated solution is :
- heated
- cooled
What is the effect of temperature on the solubility of solids in liquids ?
What is meant by a solution?
Match the physical quantities given in column A to their S I units given in column B:
| (A) | (B) | ||
| (a) | Pressure | (i) | cubic metre |
| (b) | Temperature | (ii) | kilogram |
| (c) | Density | (iii) | pascal |
| (d) | Mass | (iv) | kelvin |
| (e) | Volume | (v) | kilogram per cubic metre |
Rusting of an article made up of iron is called
A teabag placed in a cup of hot water will diffuse into the water.
