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प्रश्न
State the property of the following substance.
Manganese dioxide, a catalyst which alters the rate of a chemical reaction is black in colour.
विकल्प
Physical
Chemical
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उत्तर
Chemical
संबंधित प्रश्न
Give reasons:
A wooden table should be called a solid.
Give two reasons to justify that An iron almirah is a solid.
Classify the following into solids, liquids and gases.
Oxygen, milk, common salt, wax, stone, L.P.G, carbon- dioxide, sugar, mercury, coal, blood, butter, copper, coconut oil, kerosene.
Give reasons
Liquids have definite volume but no definite shape
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.
Complete the statement given below by selecting the correct word.
Solids and liquids have a definite ____ but gases do not.
State the property of the following substance.
Sodium nitrate is soluble in water, but calcium carbonate is not.
Particles in solids are free to move.
Complete the given analogy.
Solid: Rigidity:: Gas: ______
What is the physical state of water at 100ºC?
