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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Name the Terms for the Change of Vapour into a Liquid.

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प्रश्न

 Name the terms for the change of vapour into a liquid.

एक शब्द/वाक्यांश उत्तर
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उत्तर

Condensation .

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पाठ 1: Matter and Its Composition - Exercise

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एस.पी. सिंह Concise Chemistry [English] Class 7 ICSE
पाठ 1 Matter and Its Composition
Exercise | Q 12.5

संबंधित प्रश्‍न

Liquids have definite volume but do not have definite shape.


What are the characteristics of matter?


Name a non-metal which is a good conductor of electricity.


Name the property which enables metals to be drawn into wires.


Which of the following are ‘pure substances’ ?
Ice, Milk, Iron, Hydrochloric acid, Calcium oxide, Mercury, Brick, Wood, Air


Name a metal which can be easily cut with a knife.


Name a metal which has a low melting point.


Which one of the following is not a metalloid ?


How will you differentiate between a suspension and a colloid ?


Name the process you would use to separate a mixture of water and alcohol.


How would you separate iodine from a mixture of iodine and common salt ?


How will you separate a mixture of common salt, sulphur powder and sand ?


Explain how, nitrogen , oxygen and argon gases are separated from air.


Which of the following cannot be separated from air by the process of fractional distillation ?


The liquid air has three components X, Y and Z whose boiling points are : –186°C, –183°C and –196°C,
respectively. When liquid air is fed into a tall fractional distillation column from near its bottom and warmed
up slowly :

(a) Which component will be collected from near the bottom of the fraction distillation column ? Why ?

(b) Which component will be collected from the top part of the fractional distillation column ? Why ?

(c) Which component will be collected from the middle part of the fractional distillation column ? Why ?

(d) What could the component X, Y and Z be ?


What's the solution?

We need to rub salt on a corncob, but only salt crystals are available.


The property which allows the metals to be hammered into their sheets is ______.


Complete the following table:

S.No. CELSIUS KELVIN
1. 90°C 363 K
2. ______ 283 K
3. 63 °C ______
4. 250°C ______
5. ______ 303 K

Liquids have ______.


The fluidity of solids: ______.


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