English Medium कक्षा १० - CBSE Question Bank Solutions for Science

Name one  covalent compound containing chlorine.

 How will you find out which of the water soluble compound A or B is ionic?

Give the formula of the compound that would be formed by the combination of the following pair of elements:

 Al and Cl₂

Give the formula of the compound that would be formed by the combination of the following pair of elements:

K and H

Draw the electron-dot structure of a hydrogen chloride molecule.

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

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.