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

Tick (√) the Most Appropriate Answer. Copper Metal is Used in : (A) Making Electric Wires (B) Filling Tooth Cavities (C) Making Fuse Wires (D) Preparation of Hydrogen - Chemistry

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प्रश्न

Tick (√) the most appropriate answer.
Copper metal is used in :

पर्याय

  • making electric wires

  • filling tooth cavities

  • making fuse wires

  • preparation of hydrogen  

MCQ

उत्तर

making electric wires

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पाठ 6: Metals and Non-metals - Additional questions 1

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सेलिना Concise Chemistry [English] Class 7 ICSE
पाठ 6 Metals and Non-metals
Additional questions 1 | Q 5.1

संबंधित प्रश्‍न

Which of the following can be beaten into thin sheets?


Give reasons for the following.

Immersion rods for heating liquids are made up of metallic substances.


For the electro-refining of copper: Write the reaction that takes place at the anode


Name two metals which are used for making electric wires.


Metals are said to be shiny. Why do metals generally appear to be dull? How can their brightness be restored?


Name a non-metal having lustre (shining surface).


Give reasons 

Copper is used in making electric cables. 


 Fill in the blank: 

A metal stored in kerosene oil is _______


Name a metal which is poor conductor of electricity :   


State two important uses of following non-metal 

Uses of chlorine  


Select from the following ist:

`Fe_2O_3, , NO, PbO, Mn_2O_7`

Acidic oxide ………………


Name:

two metallic oxides which are acidic


Why do gold ornaments look new even after several years of use? 


Complete the table.

 Property of metal  Use in everyday life
 i. Ductility  
 ii. Malleability  
 iii. Conduction of heat  
 iv. Conduction of electricity  
 v. Sonority  

Why is hydrogen kept in the metal activity series?


How are metals like sodium, potassium, and calcium obtained? Give equations.


Name the following: 
An Alloy of copper and Zinc.


Diamond is a hard substance.


Alloys are homogeneous mixtures of a metal with a metal or non-metal. Which among the following alloys contain non-metal as one of its constituents?


Non – metals are ______.


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