हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Define the Following Term of Matter .

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प्रश्न

Define the following term  of Matter .

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एक पंक्ति में उत्तर
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उत्तर

Matter—Anything that has mass and occupies space is called matter.

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अध्याय 1: Matter and Its Composition - Additional questions

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एस पी सिंग Concise Chemistry [English] Class 7 ICSE
अध्याय 1 Matter and Its Composition
Additional questions | Q 22.1

संबंधित प्रश्न

Intermolecular force of attraction is maximum in ............ less in .......... and the least in .............


The inter-molecular space is maximum in


Fill in the blank

All matter is made up of tiny particles called ______


All kinds of matter


When extremely small particles X derived from the anther of a flower were suspended in a liquid Y and observed through a microscope, it was found that the particles X were moving throughout the liquid Y in a very zig-zag way. It was also observed that warmer the liquid Y, faster the particles X moved on its surface.

  1. What could particles X be ?
  2. What do you think liquid Y is ?
  3. What is the zig-zag movement of X known as ?
  4. What is causing the zig-zag movement of particles X ?
  5. Name the scientist who discovered this phenomenon.
  6. What does this experiment tell us about the nature of liquid Y?

What is meant by saying that metals are lustrous ?


The property/properties which enable copper metal to be used for making electric wires is/are :


Choose the correct answer.

A 15% alcohol solution means :


Define solvent.


Which of the following are chemical changes and which physical ? Give reason.

  1. a glass bottle breaking
  2. coal burning in air
  3. making a cake
  4. wool being knitted into a sweater

What is a suspension ? Give two examples of suspensions.


Name the process by which common salt is obtained from sea-water.


How will you separate iron pins from sand ?


How is cream separated from milk ?


How is water purified on a large scale at water works ? Explain with the help of a labelled diagram. Name the substance which is added to kill germs in the drinking water supply ?


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


The most reactive metal is ______.


Celsius scale is a scale of temperature in which zero represents the melting point of ice and 100 represents the boiling point of water.


Gases change to liquid by the process of ______.


The phenomenon of Evaporation takes place at the ______ of a liquid.


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