Advertisements
Advertisements
Question
State at least two ways of prevent rusting.
Advertisements
Solution
Two ways of prevention of rusting :
- Painting with red lead.
- Oil paint is applied on doors and windows.
- Enamel coating. Enamel is a mixture of iron, and steel with silicates.
- Coal tar it is used for coating the lower parts of ships and bridges.
APPEARS IN
RELATED QUESTIONS
What is rust ?
The process by which oxidation of food in our body takes place is
Write ‘True’ or ‘False’ in front of following statement.
Nitrogen is a gaseous non-metal essential for respiration.
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
To prevent rusting, the underside of the ships is coated with __________________.
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 -
carbon dioxide in air using a test tube with outlets containing lime water.
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.
Distinguish between:
Combustion and Respiration
Give reason for the following:
Combustion and respiration show similarity.
What is meant by burning?
