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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Statements Given Below Are Incorrect. Write the Correct Statements : Zinc is Used for Making Power Transmission Wires.

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प्रश्न

Statements given below are incorrect. Write the correct statements : 

Zinc is used for making power transmission wires.  

एका वाक्यात उत्तर
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उत्तर

Copper is used for making power transmission wires.

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

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एस.पी. सिंह Concise Chemistry [English] Class 7 ICSE
पाठ 6 Metals and Non-metals
Additional questions 1 | Q 2.5

संबंधित प्रश्‍न

A metal having low melting point is ______ but a non-metal having very high melting point is ______.


The atomic number of an element X is 12.

  1. What must an atom of X do to attain the nearest inert gas electron configuration?
  2. Which inert gas is nearest to X?

How are the properties of an alloy different from those of the constituent elements?


Mention two uses of the following metals and non-metals 

Aluminium  


Give reasons  

Aluminium is used in making aircrafts.  


Give reasons 

Gold is mixed with copper and nickel.  


State two important uses of following metal. 

Uses of copper  


Write name. 

 The reagent that dissolves noble metals.


Molecular formula of the chloride of an element X is XCl. This compound is a solid having high melting point. Write name of any element present in the same group as X


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

copper


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

Magnesium


State a specific reason for using copper in electrical cables


Match the columns.

Group A Group B
1) Copper and Zinc a) Brass
2) Copper and Tin b) Bronze
  c) Stainless steel

Which one of the following is an example for a metal?


An element which is always lustrous, malleable and ductile is ______.


What is ductility?


Metals are usually solids or gases at room temperature.


Which of the following is not a metal?


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


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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