English Medium इयत्ता १० - CBSE Question Bank Solutions for Science

Which inert gas does the Cl atom in HCl resemble in electron arrangement?

What type of bonding would you expect between Carbon and Chlorine? 

What type of bonding would you expect between Hydrogen and Chlorine? 

Using electron-dot diagrams which show only the outermost shell electrons, show how a molecule of nitrogen, N₂, is formed from two nitrogen atoms. What name is given to this type of bonding? (Atomic number of nitrogen is 7)

Draw the electron-dot structure of  CO₂  compound and state the type of bonding.

Draw the electron-dot structure of H₂O compound and state the type of bonding.

Draw the electron-dot structure of  HCl  compound and state the type of bonding.

Using electron-dot diagrams which show only the outermost shell electrons, show how a molecule of oxygen, O₂, is formed from two oxygen atoms. What name is given to this type of bonding? (At. No. of oxygen = 8)

Draw the electron-dot structure of NH₃ and state the type of bonding. 

Draw the electron-dot structure of N₂ and state the type of bonding. 

Write two points of difference in the structures of diamond and graphite.

Explain why, graphite can be used as a lubricant but diamond cannot.

Explain why, diamond can be used in rock drilling equipment but graphite cannot.

State one use of diamond which depends on its 'extraordinary brilliance' and one use of graphite which depends on its being 'black and quite soft'.

What is diamond? Of what substance is diamond made?

Describe the structure of diamond. Draw a simple diagram to show the arrangement of carbon atoms in diamond.

Explain why, diamond has a high melting point.

State any two uses of diamond.

 What is graphite?