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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Name the Following: a Metal Used in Packaging. - Chemistry

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प्रश्न

Name the following:

A metal used in packaging.

एक शब्द/वाक्यांश उत्तर
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उत्तर

Aluminium

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

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विराफ जे दलाल New Simplified Middle School Chemistry [English] Class 7
अध्याय 6 Metals and Non-metals
Objective Type Questions | Q 3.2

संबंधित प्रश्न

Give reasons for the following.

Sodium and potassium are stored in kerosene.


Give a reason for Alkali metals are good reducing agents.


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


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


Give two uses of Germanium  


Aluminium is not used to make : 


Fill in the blank spaces by choosing the correct words from the given list. 

List: amalgam, chlorine, gallium, sodium chloride, silver chloride 

______ is a liquid metal. 

 


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 ________


Statements given below are incorrect. Write the correct statements : 

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


Write ‘True’ or ‘False’ in front of following statement. 

Magnesium is used in making light weight alloys of aluminium. 


Write scientific reason.

Pine oil is used in froth flotation.


Write scientific reason.

Anodes need to be replaced from time to time during the electrolysis of alumina.


Name the following:

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


On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.

A white crystalline solid which decrepitates on heating leaving a residue which fuses with the glass and evolves two gases one of which is coloured and acidic.


Assertion: Mercury is solid in room temperature.

Reason: Mercury is a non-metal.


Metals are usually solids or gases at room temperature.


Why are bells made of metals?


Which of the following metals can displace the other two metals from their salt solutions?


Match the following

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

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