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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

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

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प्रश्न

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

एक शब्द/वाक्यांश उत्तर

उत्तर

Condensation .

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अध्याय 1: Matter and Its Composition - Exercise

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सेलिना Concise Chemistry [English] Class 7 ICSE
अध्याय 1 Matter and Its Composition
Exercise | Q 12.5

संबंधित प्रश्न

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


What is meant by saying that non-metals are brittle ?


Classify the following into metals, non-metals and metalloids:
Silicon, Mercury, Diamond, Sulphur, Iodine, Germanium, Sodium, Carbon, Magnesium, Copper, Boron, Helium


Which of  the following are compounds ?

  1. CO
  2. No
  3. NO
  4. Co

The element which is not common between the compounds called baking soda and soda ash is


There is a large group of materials P which can be divided into three groups Q, R and S on the basis of their properties. The substances belonging to group Q can be solids, liquids or gases. The solids belonging to group Q are usually electrical insulators. Most of the substances of group R are solids which are good conductors of electricity. The substances belonging to group S are neither insulators like Q nor good conductors like R. The properties of S are intermediate between those of Q and R.

  1. What could the group of materials P be ?
  2. Name the substances Q. Give two examples of such substances.
  3. Name the substances R. Write two examples of such substances.
  4. Name the substances S. Give two examples of such substances.
  5. Out of Q, R and S, which substances are malleable and ductile ?

Which of the two will scatter light : soap solution or sugar solution ? Why ?


If 25 mL of acetone is present in 150 mL of its aqueous solution, calculate the concentration of solution.


How will you differentiate between a suspension and a colloid ?


Which of the following will show Tyndall effect ? Why ?

  1. Salt solution
  2. Starch solution
  3. Milk
  4. Copper sulphate solution

What will happen if a saturated solution is :

  1. heated
  2. cooled

Which of the following is not an emulsion ?


One of the following liquids will leave behind a residue on heating. This one is :


Name the process by which all the dye can be recovered from black ink.


Describe the method of separating a mixture containing common salt, sand and ammonium chloride.


How is cream separated from milk ?


The correct increasing order of the boiling points of liquid oxygen, liquid argon and liquid nitrogen present in liquid air is :


Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.

Name a non-metal which exists as a liquid at room temperature.


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.


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