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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Mention Two Uses of the Following Metals and Non-metals Aluminium - Chemistry

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प्रश्न

Mention two uses of the following metals and non-metals 

Aluminium  

एका वाक्यात उत्तर

उत्तर

It is used to make electric wires.
It is used to make utensils, cans, window fram’es, etc.

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पाठ 6: Metals and Non-metals - Exercise

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सेलिना Concise Chemistry [English] Class 7 ICSE
पाठ 6 Metals and Non-metals
Exercise | Q 3.2

संबंधित प्रश्‍न

State one use of Gold.


State one use of Mercury.


The atomic number of an element Y is 16.
(a) What must an atom of Y do to achieve the nearest inert gas electron arrangement?
(b) Which inert gas is nearest to Y?


Give the composition of an alloy called solder. State its one property and one use.


Write ‘true’ or ‘false’ for the following statement. 

Iodine acts as an antiseptic in the form of a tincture of iodine. 


Statements given below are incorrect. Write the correct statements : 

Bronze is a mixture of 10% copper, 80% zinc and 10% tin.  


Tick (√) the most appropriate answer. 

Graphite is used :


State two important uses of following metals: 

Uses of iron   


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

Zinc


State why telegraph poles are painted with aluminium paint.


Give a reason why a green deposit is seen on the surface of an article of copper


Name the following:

The most reactive halogen.


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.


Electronic configuration of metal A is 2,8,1. Electronic configuration of metal B is 2,8,8,2. Which of the above metals is more reactive? Explain with reason.


Name one metal and one non-metal that exist in liquid state at room temperature. Also name two metals having melting point less than 310 K (37°C)


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


The metal can be cut with a knife ______.


Match the following

i. Softest metal a. Copper
ii. Hardest metal b. Sodium
iii. Hardest non–metal c. Osmium
iv. Ductility d. Diamond

Why do metals appear shiny?


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

Metal atoms tend to have a maximum of ______ electrons in the outermost shell.


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