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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Statements Given Below Are Incorrect. Write the Correct Statements : Soda Water is Prepared by Dissolving Washing Soda in Water. - Chemistry

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प्रश्न

Statements given below are incorrect. Write the correct statements : 

Soda water is prepared by dissolving washing soda in water.  

एक पंक्ति में उत्तर

उत्तर

Soda water is prepared by dissolving carbon dioxide in water. 

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

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सेलिना Concise Chemistry [English] Class 7 ICSE
अध्याय 6 Metals and Non-metals
Additional questions 1 | Q 2.3

संबंधित प्रश्न

Give the name and formulae of two acidic oxides.


Name the non-metal which is used to preserve food materials.


Which of the following alloys contains a non-metal as one of the constituents?
(a) brass
(b) amalgam
(c) steel
(d) bronze


 Name a metal that can be cut with knife   


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

Graphite is used in making filaments of electric bulb.  


State any five physical properties of a metal.
Physical properties of a metal : 


Name a non-metal whose compounds help in the growth of plants.  


`Mg -—  → Mg^(2+)`


Name:

a metal which is brittle


Distinguish between an ore and a metallic compound.


Name a metal which does not corrode easily.


Which metal occurs as a carbonate also gives the name of their respective ore.


The metal other than aluminium, which has a strong affinity for oxygen is ______.


Classify the given elements into metals, non - metals, and metalloids. :
Carbon, Boron, Sodium, Oxygen.

If the electronic configuration of metal A is (2, 8, 1) and that of metal B is (2, 8, 2) then:
a. Which metal is less reactive?
b. Write the names of the two metals.
c. Write the balanced chemical equation of the reaction of anyone metal with hydrochloric acid.

Explain the following:

Metals like calcium and magnesium are never found in their free state in nature.


Complete the statement given below, by filling in the blank with the correct word:

A non-metal added to swimming pools to kill germs_____.


Pencil lead contains


Which non-metal is essential for our life and all living beings?


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