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सी.आई.एस.सी.ई.आयसीएसई 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.  

एका वाक्यात उत्तर
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उत्तर

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

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

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सेलिना Concise Chemistry [English] Class 7 ICSE
पाठ 6 Metals and Non-metals
Additional questions 1 | Q 2.2

संबंधित प्रश्‍न

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

Write word equations of the reactions involved.


What is a thermite reaction? Explain with the help of an equation. State one use of this reaction.


What is an alloy? How is an alloy made?


What is meant by 22 carat gold? Name the metals which are usually alloyed with gold to make it harder.


Mention two uses of the following metals and non-metals 

Iodine    


Give two uses of Germanium  


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. 

 


Tick (√) the most appropriate answer. 

Graphite is used :


Name a metal which is not malleable : 


State two important uses of following metal: 

Uses of gold  


State two important uses of following metal 

Uses of lead     


Write name.

The nonmetal having electrical conductivity.


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.


What is it made from? Why?

A pair of tongs.


Give a reason why iron objects rust easily but the iron pillar at Qutab Minar has not rusted over the years.


Assertion: Mercury is solid in room temperature.

Reason: Mercury is a non-metal.


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


In the following figure, you find that the bulb glows when an iron nail is placed between two ends of wire. Complete the following sentences on the basis of this fact.

  1. ______  is a metal.
  2. Metals are good ______ of electricity. 

The typical shine of metals is called ______.


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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