मराठी
सी.आई.एस.सी.ई.आयसीएसई ICSE Class 6

Write the Molecular Formulae of Compound Lead Sulphide.

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प्रश्न

Write the molecular formulae of compound lead sulphide.

टीपा लिहा
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उत्तर

Formula of Lead Sulphide is PbS.

Symbolic Combing Power:

Pb2   S2               PbS

Here the subscript number is same.

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पाठ 4: Elements, Compounds, Symbols And Formulae - Exercise 2

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सेलिना Concise Chemistry [English] Class 6 ICSE
पाठ 4 Elements, Compounds, Symbols And Formulae
Exercise 2 | Q 7.4

संबंधित प्रश्‍न

Name the process by which the components of following mixtures can be separated.

  1. Iron and sulphur
  2. Ammonium chloride and sand
  3. Common salt from sea water
  4. Chaff and grain
  5. Water and mustard oil
  6. Sugar and water

Fill in the blank

In a _______ the substances are not combined chemically.


Write true or false

A heterogeneous mixture has a uniform composition throughout the mixture.


Name the elements which form water.
How will you justify that water is a compound? 


State four important characteristics of compounds


What is the proportion of element present in the following compound?
NO2 


State four differences between compounds and mixtures.


Write the molecular formulae of compound hydrogen sulphide.


Explain the term compounds.


Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to properties


What is the molecular formula of the following compound?

Hydrochloric acid


What is the molecular formula of the following compound?

Methane


Explain the difference between Mixture and compounds.


State true of false. If false, give the correct statement.

Compounds and elements are pure substances.


Write the chemical formula and name the elements present in the following compounds.

  1. Sodium chloride
  2. Potassium hydroxide
  3. Carbon dioxide
  4. Calcium oxide
  5. Sulphur dioxide

Mention the uses of the following compounds.

  1. Baking soda
  2. Bleaching powder
  3. Quick lime

Sodium chloride is used as table salt and for flavoring and preserving food.


Which of the following are not compounds?

  1. Chlorine gas
  2. Potassium chloride
  3. Iron
  4. Iron sulphide
  5. Aluminium
  6. Iodine
  7. Carbon
  8. Carbon monoxide
  9. Sulphur powder

Complete the table

Compound Constituent elements
Sodium carbonate Sodium, Carbon. Oxygen
Water  
Calcium oxide  
Sugar Carbon, Hydrogen, Oxygen

A compound has a fixed ______.


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