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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Fill in the Blank : the Substances Which Can Flow Are Called ________

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प्रश्न

Fill in the blank :

The substances which can flow are called ________

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उत्तर

The substances which can flow are called fluids.

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अध्याय 1: Matter and Its Composition - Exercise

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एस पी सिंग Concise Chemistry [English] Class 7 ICSE
अध्याय 1 Matter and Its Composition
Exercise | Q 11.5

संबंधित प्रश्न

The inter-molecular force is maximum in


What are the characteristics of matter?


Bromine and air take about 15 minutes to diffuse completely but bromine diffuses into a vacuum very rapidly. Why is this so?


Name a metal which is soft and a non-metal which is hard.


What is meant by saying that metals are lustrous ?


What is the general name of the materials which contain at least two pure substances and show the properties
of their constituents ?


Which of the following does not have a fixed melting point/boiling point ?


A, B and C are all liquids. Liquid A has a comparatively low boiling point. On heating, liquid A vaporises completely without leaving behind any residue. Liquid A is being used increasingly as a fuel in motor vehicles either alone or by mixing with petrol. Liquid B has a very high boiling point. It also vaporises completely on heating, without leaving any residue. Liquid B is a conductor of electricity and used in making thermometers. Liquid C has a moderate boiling point. On heating, liquid C vaporises leaving behind a white solid D which is used in cooking vegetables. The condensation of vapours from C give a liquid E which turns anhydrous CuSO4 to blue.

(a) Which liquid could be an element ? Name this element.

(b) Which liquid could be a mixture ? Name this mixture.

(c) Which liquid could be a compound ? Name this compound.

(d) What could the solid D be ?

(e) What do you think is liquid E ?


You have been given a suspension and a solution. How could you tell the difference between them by their appearance ?


Define the emulsion. Give one example.


Name the process which can be used to recover salt from an aqueous salt solution.


Fill in the following blanks with suitable words :

Miscible liquids are separated by .....................


Fill in the following blanks with suitable words :

 If a mixture contains iron filings as one of the constituents, it can be separated by using a .......................


How would you obtain sodium chloride from a mixture of sodium chloride and sulphur without using water ?


Which one of the following scrap metal cannot be separated by magnetic separation ?


A solid mixture contains four constituents P, Q, R and S. P consists of tiny grains and it is mixed with
cement for plastering the walls. Q is a white solid which is recovered on a large scale from sea water by the
process of evaporation. R is in the form of tiny particles of a material whose corrosion is called rusting. And
S is a white solid which is used in making ordinary dry cells.

  1. What could P, Q, R and S be ?
  2. How would you separate a mixture containing P, Q, R and S ?

______ is not made of matter.


Liquids have ______.


The pressure of gases does not depend on the temperature of the gas and the volume it occupies.


Define the term matter.


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