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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Name a Metal Which is Best Conductor of Electricity :

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प्रश्न

Name a metal which is best conductor of electricity :  

एक शब्द/वाक्यांश उत्तर
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उत्तर

Silver

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

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सेलिना Concise Chemistry [English] Class 7 ICSE
पाठ 6 Metals and Non-metals
Additional questions 2 | Q 2.5

संबंधित प्रश्‍न

Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.

(a) How will she find the nature of the gas?

(b) Write down word equations of all the reactions taking place in this process.


What is an amalgam?


Mention two uses of the following metals and non-metals 

Iodine    


Give two uses of Germanium  


A metal which is neither ductile nor malleable is


State the position of the following in the periodic table:

Iron and zinc


State the position of the following in the periodic table:

Aluminium


Take an element from an alkali metal and one from an alkaline earth metal and write an equation  for their action with:

Hydrochloric acid,


Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:

Oxygen


Which is the non-ionic compound in the compounds given below.
AgNO3 + Nacl → AgCl + NaNO3


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

iron


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

Silver


When a copper coin is dipped in the solution of silver nitrate, it shows a lustre on its surface. Explain this process with the help of a chemical equation.


A is a reddish-brown metal, which combines with O2 at < 1370 K gives B, a black coloured compound. At a temperature > 1370 K, A gives C which is red in colour. Find A, B, and C with reaction.


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. 

Sodium is a hard metal. 


Which metals are not solid at room temperature?


The metals which are found in both free state as well as combined state are ______.


X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:

______ is the reducing agent.


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