मराठी
सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

With Reference to the Following Metals State Their Use in Daily Life Metal: Copper

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प्रश्न

With reference to the following metals state their use in daily life metal:

copper

एका वाक्यात उत्तर
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उत्तर

Copper:

  1. Making calori meters as it is good conductor of heat.
  2. Making thin wires being conductor of electricity.
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पाठ 6: Metals and Non-metals - Exercise

संबंधित प्रश्‍न

The electrical conductivity and melting point of an alloy is ______ than that of pure metals.


What elements are present in steel?


Which of the following alloys contains mercury as one of the constituents?


Give reasons  

Aluminium is used in making aircrafts.  


Write ‘true’ or ‘false’ for the following statement. 

Iodine acts as an antiseptic in the form of a tincture of iodine. 


Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride 

A solution of a metal in mercury is called ________


Statements given below are incorrect. Write the correct statements : 

Zinc is used for making power transmission wires.  


State two important uses of following metals: 

Uses of iron   


State two important uses of following metal:

Uses of aluminium


Why are alkali metals kept in kerosene oil?


Write name.

The nonmetal having electrical conductivity.


Write scientific reason.

Sodium is always kept in kerosene.


What is it made from? Why?

A pair of tongs.


With reference to the following metals state their use in daily life metal:

Aluminium


Name the following:

The chemical compound responsible for the green deposit on the surface of articles of copper.


Give reasons for the following.

  1. Aluminum foils are used to wrap food items.
  2. Immersion rods for heating liquids are made up of metallic substances.
  3. Sodium and potassium are stored in kerosene.
  4. Mercury is used in thermometers.

The most abundant element in the universe is ____________.


The electronic configurations of three elements X, Y and Z are X – 2, 8; Y – 2, 8, 7 and Z – 2, 8, 2. Which of the following is correct?


In the following figure, you find that the bulb glows when an iron nail is placed between two ends of wire. Complete the following sentences on the basis of this fact.

  1. ______  is a metal.
  2. Metals are good ______ of electricity. 

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