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

Fill in the Blank Spaces by Choosing the Correct Words from the Given List. List: Amalgam, Chlorine, Gallium, Sodium Chloride, Silver Chloride Salt of Silver, Such

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प्रश्न

Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride  

Salt of silver, such as ________ is used for making photographic films.

रिक्त स्थान भरें
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उत्तर

Salt of silver, such as silver chloride is used for making photographic films.

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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 1.2

संबंधित प्रश्न

Give reasons for the following.

Copper cannot displace zinc from its salt solution.


Give a reason for the following:

Alkali metals are good reducing agents.


State one use of the following metal:

Silver


State one use of the following metal:

Mercury


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

Silver is used to make electric cables.


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.  


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 metals: 

Uses of iron   


Write scientific reason.

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


When a copper coin is dipped in silver nitrate solution, a glitter appears on the coin after some time. Why does this happen? Write the chemical equation.


Molecular formula of the chloride of an element X is XCl. This compound is a solid having high melting point. Write name of any element present in the same group as X


Which is the non-ionic compound in the compounds given below.
AgNO3 + Nacl → AgCl + NaNO3


Name the following:

A halogen which is a solid at room temperature.


Complete the following flow chart.


Why are bells made of metals?


A doctor prescribed a tablet to a patient suffering from iron deficiency. The tablet does not look like iron. Explain.


Compare the conductivity of metals and non–metals.


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

______ is the metallic element.


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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