हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Give Reasons Magnesium is Used in Fire Works.

Advertisements
Advertisements

प्रश्न

Give reasons 

Magnesium is used in fire works. 

एक पंक्ति में उत्तर
Advertisements

उत्तर

Magnesium is used in fire works because it bums with a dazzling light.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 6: Metals and Non-metals - Exercise

APPEARS IN

एस पी सिंग Concise Chemistry [English] Class 7 ICSE
अध्याय 6 Metals and Non-metals
Exercise | Q 4.1

संबंधित प्रश्न

What happens when Dilute sulphuric acid is poured on a copper plate?

Write word equations of the reactions involved.


State five uses of metals.


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


What is an alloy?


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 silver  


State two important uses of following metal 

Uses of tin  


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.


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.

An amorphous substance which turns from pale green to black on strong heating evolving a colourless, acidic gas as the only gaseous product.


Halogen reacts with acid.


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.


Complete the following flow chart.


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


The electronic configurations of three elements X, Y and Z are X – 2, 8; Y – 2, 8, 7 and Z – 2, 8, 2. Which of the following is correct?


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


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


The liquid metal at room temperature ______.


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

______ is the metallic element.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×