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प्रश्न
Fill in the following blank with suitable words :
Scientists say that there are actually five states of matter : solid, liquid, gas, .................... and ...................
उत्तर
Scientists say that are actually five states of matter: solid, liquid, gas, plasma and Bose Einstein condensate.
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संबंधित प्रश्न
For any substance, why does the temperature remain constant during the change of state?
Mention a change which is always desirable.
There are four substances W, X, Y and Z. The substance W is a dark violet solid having diatomic molecules. A solution of W in alcohol is used as a common antiseptic C. The substance X is a white solid which is usually recovered from sea water on a large scale. The substance Y is a white solid which is insoluble in water and used in the form of small balls for the safe storage of woollen clothes. The substance Z is a yet another white solid which is used in making commonly used dry cells.
- Name (i) W (ii) X (iii) Y and (iv) Z.
- Out of W, X, Y and Z, which substance/substances can undergo sublimation ?
- Which substance is organic in nature ?
- What is the name of substance C ?
- Which substance belongs to the halogen family ?
When water is cooled to a temperature x, it gets converted into ice at temperature x by a process called P. And when ice at temperature x is warmed, it gets reconverted into water at the same temperature x in a process called Q.
- What is the value of temperature x in Kelvin ?
- What is the process P known as ?
- What is the name of energy released during process P ?
- What is the process Q known as ?
- What is the name of energy absorbed during process Q ?
State the three effects of heat on matter
Define the following terms: Boiling point
Define the following terms: Liquefaction
Differentiate between: Solidification and condensation
Differentiate between: Gas and vapour
Why does this happen?
Coconut oil thickens in winter.
