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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Name the Following: the Chemical Compound Responsible for the Green Deposit on the Surface of Articles of Copper. - Chemistry

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प्रश्न

Name the following:

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

एक शब्द/वाक्यांश उत्तर
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उत्तर

Copper carbonate (CuCO3)

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पाठ 6: Metals and Non-metals - Objective Type Questions

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विराफ जे. दलाल New Simplified Middle School Chemistry [English] Class 7
पाठ 6 Metals and Non-metals
Objective Type Questions | Q 3.3

संबंधित प्रश्‍न

Give reasons for the following.

Copper cannot displace zinc from its salt solution.


Give a reason for Alkali metals are good reducing agents.


Name an alloy of lead and tin.


Which property of 'solder' alloy makes it suitable for welding electrical wires?


What elements are present in steel? How are the properties of steel different from those of pure iron?


 For the reduction of metal oxide, suggest a reducing agent other than carbon.


What is an alloy? Give two examples of alloys.


Mention two uses of the following metals and non-metals 

Aluminium  


Give the general characteristics of:

Alkaline earth metals with reference to

(i) bonding
(ii) action of air
(iii) action of water
(iv) action of acid


What is it made from? Why?

A pair of tongs.


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

Zinc


Give a reason why iron objects rust easily but the iron pillar at Qutab Minar has not rusted over the years.


Name the following:

The most reactive halogen.


What is ductility?


The ability of metals to be drawn into thin wire is known as


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. 

Metals are ______ conductors of heat and electricity.


Compare the conductivity of metals and non–metals.


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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