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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 6

Name: Two Substances Used to Make Electric Wires - Chemistry

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प्रश्न

Name: Two substances used to make electric wires

एक पंक्ति में उत्तर
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उत्तर

Two substances used to make electric wires are:
1. Copper.
2. Aluminium as these are good conductors of electricity.

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अध्याय 4: Elements, Compounds, Symbols And Formulae - Exercise 3

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सेलिना Concise Chemistry [English] Class 6 ICSE
अध्याय 4 Elements, Compounds, Symbols And Formulae
Exercise 3 | Q 1.3

संबंधित प्रश्न

Choose the most appropriate answer 

 A solvent of Iodine is


Is food that we eat a mixture ?


Tick the most appropriate answer.

How many times is a proton heavier than an electron?

  1. 1500
  2. 1800
  3. 1840
  4. none of these

Fill in the blank
A liquid non-metal is  _______.


Tick (√) the correct alternative from the choice given for the following statement.
Sand is a compound of


Match the compounds in List I – 1 to 20 with their correct formulas from in List II-A to T.

  List I   List II
1 Hydrochloric acid A NaCI
2 Potassium Hydroxide B NaOH
3 Sulphuric Acid C KCI
4 Zinc Hydroxide D Ca(OH)2
5 Sodium Chloride E CaS
6 Nitric Acid F CuSO4
7 Calcium Hydroxide G CaCO3
8 Carbonic Acid H NH4CI
9 Sodium hydroxide I HCI
10 Copper sulphate J ZnO
11 Potassium Chloride K HNO3
12 Calcium Carbonate L H2CO3
13 Magnesium Sulphide M MgS
14 Zinc Sulphate N MgO
15 aluminium Hydroxide O KOH
16 Sodium Carbonate P ZnSO4
17 Calcium Sulphide Q Na2CO3
18 Magnesium Oxide R H2SO4
19 Zinc Oxide S AI(OH)3
20 Ammonium Chloride T Zn(OH)2

 


Explain the term ‘mixture’.


Higher Order Thinking Skills.

In the diagram given below, the circle, square and triangle represent the atoms of different elements.

Identify all combinations that represent

  1. molecule of a compound 
  2. molecule of an element consisting of two atoms
  3. molecule of an element consisting of three atoms

Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound?


Give two example of elements.


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