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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Statements Given Below Are Incorrect. Write the Correct Statements : Bronze is a Mixture of 10% Copper, 80% Zinc and 10% Tin.

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प्रश्न

Statements given below are incorrect. Write the correct statements : 

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

एक पंक्ति में उत्तर
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उत्तर

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

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

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एस पी सिंग Concise Chemistry [English] Class 7 ICSE
अध्याय 6 Metals and Non-metals
Additional questions 1 | Q 2.2

संबंधित प्रश्न

Which property of graphite is utilised in making electrodes?


State five uses of metals.


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


Mention two uses of the following metals and non-metals 

Oxygen


Give reasons 

Graphite is used in the leads of pencils  


A metal with melting point less than 50°C is


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. 

 


Statements given below are incorrect. Write the correct statements : 

Zinc is used for making power transmission wires.  


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

Magnesium is used in making light weight alloys of aluminium. 


State two important uses of following metal 

Uses of lead     


Give the general characteristics of:

Alkali metals,

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


State a specific reason for using copper in electrical cables


Name the following:

The most reactive halogen.


Name the following:

A metal used in packaging.


Write the name.

Two highly reactive metals-


Which of the following property is generally not shown by metals?


Why are bells made of metals?


Metals are ______ conductors of heat and electricity.


Sodium is a hard metal. 


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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