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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

State Two Important Uses of Following Metal : Uses of Gold - Chemistry

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प्रश्न

State two important uses of following metal: 

Uses of gold  

एका वाक्यात उत्तर

उत्तर

Uses of gold :

  • It is used for making jewellery and coins.
  • It is used in dentistry for filling cavities in teeth
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पाठ 6: Metals and Non-metals - Additional questions 2

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सेलिना Concise Chemistry [English] Class 7 ICSE
पाठ 6 Metals and Non-metals
Additional questions 2 | Q 3.01

संबंधित प्रश्‍न

Give a reason for Alkali metals are good reducing agents.


Give the composition of an alloy called solder. State its one property and one use.


What is an amalgam?


What is an alloy? Give two examples of alloys.


How are the properties of an alloy different from those of the constitutent elements?


Mention two uses of the following metals and non-metals 

Iodine    


Give reasons 

Magnesium is used in fire works. 


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

Magnesium is used in making light weight alloys of aluminium. 


State the position of the following in the periodic table:

Alkali metals


State the position of the following in the periodic table:

Iron and zinc


Give reasons for the following:
Most metals conduct electricity well.


Name the following:

The chemical compound responsible for the green deposit on the surface of articles of copper.


Halogen reacts with acid.


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?


Give an example of a metal which

  1. is liquid at room temperature.
  2. is the best conductor of heat.

The liquid metal at room temperature ______.


Silver and copper are very good conductors of electricity.


Match the following

i. Silica a. Caustic potash
ii. Potassium hydroxide b. Sand
iii. Sodium hydroxide c. Calamine
iv. Zinc carbonate d. Caustic soda

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

______ is the metallic element.


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