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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.

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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

State one use of Gold.


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


How does the electrical conductivity of copper alloys, brass and bronze, differ from that of pure copper?


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 ________


State two important uses of following metal: 

Uses of gold  


State two important uses of following metal:

Uses of aluminium


Write name. 

 The reagent that dissolves noble metals.


Write scientific reason.

Sodium is always kept in kerosene.


Give reasons for the following:
Most metals conduct electricity well.


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

Aluminium


Complete the following flowchart.


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 metal in the earth’s crust is ____________.


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


Name two soft metals which can be cut with a knife.


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. 

All gases are ______.


Which metal has the highest ductility?


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 metallic element.


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