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प्रश्न
Write whether the following statement is true or false:
The intermolecular force of attraction is the weakest in gases.
विकल्प
True
False
उत्तर
True
APPEARS IN
संबंधित प्रश्न
Tick the most appropriate answer.
Melting of ice is a
Define 'boiling point' of a substance ? What is the boiling point of water ?
Explain why, naphthalene balls kept in stored clothes in our homes disappear over a period of time.
Which of the following process/processes release heat ?
- condensation
- vaporisation
- freezing
- melting
The boiling point of ethane is – 88°C. This temperature will be equivalent to :
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 ?
Differentiate between: Solidification and condensation
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