Advertisements
Advertisements
Question
Write ‘True’ or ‘False’ in front of following statement.
Enamelling is the process of baking a mixture of silicates on the surface of aluminium at a high temperature.
Options
True
False
Advertisements
Solution
False.
Enamelling is the process of baking a mixture of silicates on the surface of iron at a high temperature.
APPEARS IN
RELATED QUESTIONS
Answer the question put against the following constituents of air :
Carbon dioxide : “Although carbon dioxide plays no role in respiration, all life would come to an end if there is no carbon dioxide in air.” Support this statement with relevant facts.
Describe a simple experiment to show that l/5th of air is oxygen.
Fill in the blank space by choosing the correct word from the given list.
List: oxygen, carbonic, suIphurUioxide gas, precipitation, helium
Dust particles help in the ________ of water vapour in air.
Write ‘True’ or ‘False’ in front of following statement.
The trapping of solar heat energy in the earth’s atmosphere is called greenhouse effect.
Briefly state the importance of Water vapour.
Name three noble gases present in the air. State their one industrial use
What is the percentage of nitrogen in air?
Air is made up of oxygen only.
Make sentences using the given set of words.
99%, oxygen, nitrogen, air, together
On a Sunday morning Paheli’s friend visited her home. She wanted to see some flowering plants in the nearby garden. Both of them went to the garden. While returning from the garden they also observed some flowering plants on the road side. But to their surprise they found that the leaves and flowers of these roadside plants were comparatively very dull. Can you help them to know why?
