Advertisements
Advertisements
Question
In the laboratory preparation of oxygen from hydrogen peroxide answer the following:
Name the catalyst used in the preparation and state it’s function.
Advertisements
Solution
Catalyst used in preparation of oxygen is manganese dioxide. It increased the speed of decomposition of H202.
APPEARS IN
RELATED QUESTIONS
State at least two ways of prevent rusting.
State two differences between:
Rusting and burning.
What happens when Sodium burns in oxygen ? Also give the balanced chemical equation for the reaction.
Write ‘True’ or ‘False’ in front of following statement.
The rust formed on the surface of iron easily crumbles.
Write fully balanced equation for the following :
MgO + H2O →
State how nitrogen is utilised by plants for their growth. Give a reason why nitrogen is used in flushing food packages.
Describe simple experiments to show the presence of -
oxygen and nitrogen component in air using a bell jar
In the laboratory preparation of oxygen from hydrogen peroxide answer the following:
Draw a neat labelled diagram for the method used in the above preparation.
Give the main experimental points only to demonstrate that candle-gains weight on burning.
Give reason for the following:
Combustion and respiration show similarity.
