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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Name a Non-metal Which is Good Conductor of Electricity. - Chemistry

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प्रश्न

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

एक पंक्ति में उत्तर

उत्तर

Graphite (form of carbon).

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अध्याय 6: Metals and Non-metals - Additional questions 2

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सेलिना Concise Chemistry [English] Class 7 ICSE
अध्याय 6 Metals and Non-metals
Additional questions 2 | Q 5.3

संबंधित प्रश्न

Give the name and formulae of two basic oxides.


 State one use of Nitrogen.


Name the metal which is used in making thermometers.


You are given a dry cell, a torch bulb with holder, wires and crocodile clips. How would you use them to distinguish between samples of metals and non-metals?


State any three differences between the physical properties of metals and non-metals.


Name a non-metal that is hardest naturally occurring substance  


Give reasons 

Impure diamond is used to cut glass  


Match the statements in Column A, with those in Column B .

   Column A   Column B 
1 A metal used for making high quality mirrors . a Chlorine 
2 A metal which neither malleable nor ductile.  b Graphite 
3 A non-metal,used in the sterilsation of water.  c Iodine 
4 A non-metal, whose deficiency can lead to disease like goitre.  d Silver 
5  A non -metal which can be used as dry lubricant.  Zinc

Name a metal which is poor conductor of electricity :   


`Mg -—  → Mg^(2+)`


`Mg +H_2SO_4 → —+ — `


Name:

Two metals which are liquid at room temperature


Name the following:
or

With reference to the physical properties of metals and non-metals, state the following exception.

A metal which is liquid at room temperature.


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


Classify the given elements into metals, non - metals, and metalloids. :
Carbon, Boron, Sodium, Oxygen.

Ankita bought some Glucose Powder. She felt is was adulterated with starch powder. How would she test it?


If the electronic configuration of metal A is (2, 8, 1) and that of metal B is (2, 8, 2) then:
a. Which metal is less reactive?
b. Write the names of the two metals.
c. Write the balanced chemical equation of the reaction of anyone metal with hydrochloric acid.

Tabulate the differences between metals and non-metals.


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?


Generally, non-metals are not lustrous. Which of the following non-metal is lustrous?


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