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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Name the Following: the Most Reactive Halogen. - Chemistry

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प्रश्न

Name the following:

The most reactive halogen.

एक शब्द/वाक्यांश उत्तर
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उत्तर

Fluorine

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

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विराफ जे. दलाल New Simplified Middle School Chemistry [English] Class 7
पाठ 6 Metals and Non-metals
Objective Type Questions | Q 3.1

संबंधित प्रश्‍न

Explain how, a reduction reaction of aluminium can be used for welding cracked machine parts of iron. Write a chemical equation for the reaction involved.


Mention two uses of the following metals and non-metals  

Gold 


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. 

 


Statements given below are incorrect. Write the correct statements : 

Zinc is used for making power transmission wires.  


State two important uses of following metal 

Uses of tin  


Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:

Oxygen


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.


The electronic configuration of metal ‘A’ is 2,8,1 and that of metal ‘B’ is 2,8,2. Which of the two metals is more reactive? Write their reaction with dilute hydrochloric acid.


What was Mendeleev's basis for the classification of elements?


State why telegraph poles are painted with aluminium paint.


Name the following:

A halogen which is a solid at room temperature.


Complete the following flow chart.


Name one metal and one non-metal that exist in liquid state at room temperature. Also name two metals having melting point less than 310 K (37°C)


Name two major non-metals which are present in fertilisers and enhance the growth of plants.


Sodium is a hard metal. 


Silver and copper are very good conductors of electricity.


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 reducing agent.


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