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प्रश्न
Give reasons
A red ink drop added to small amount of water in a glass turns the water red in some time.
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उत्तर
When we put a drop of red ink in a glass of water, its particles diffuse with particles of water slowly but continuously and the water turns red
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संबंधित प्रश्न
Fill in the blanks:
The physical state of a substance, which has neither fixed volume nor fixed shape is a ______.
Write whether the following statements are true or false:
Only water can exist in three different states
For the following statement, say whether it describes a solid, a liquid or a gas.
Particles move about very quickly but do not leave the surface
Describe simple experiments to prove that solids have mass
Explain the term ‘Interconversion of matter’. With reference to ice, water, and water vapour show diagrammatically the change of state of matter from solid to liquid to gaseous and back to the original state.
State the property of the following substance.
Sodium nitrate is soluble in water, but calcium carbonate is not.
Write the states of water.
Complete the given analogy.
Solid: Rigidity:: Gas: ______
Complete the given analogy.
Solid: Definite shape:: ______: Shape of the vessel.
The density of solid Argon is 1.6 ml at - 233°C. If the Argon atom is assumed to be sphere of radius 1.5 × 10-8 cm, then the ______ % of solid Argon is apparently occupied.
[Take : NA = 6 × 1023, Atomic mass of Ar = 40]
