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प्रश्न
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 __________________.
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उत्तर
To prevent rusting, the underside of the ships is coated with red lead oxide paint.
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संबंधित प्रश्न
State two differences between:
Rusting and burning.
Write ‘True’ or ‘False’ in front of following statement.
Nitrogen is a gaseous non-metal essential for respiration.
What happens when potassium nitrate is heated ?
Oxygen of the air is utilised for ‘combustiop’ and for ‘respiration’. Compare the two with a suitable examples.
Describe simple experiments to show the presence of -
water vapour in air using a glass tumbler and ice.
In the laboratory preparation of oxygen from hydrogen peroxide answer the following:
State the method of collection of the oxygen gas giving reasons.
Give the main experimental points only to demonstrate that magnesium.
Give the main experimental points only to demonstrate that candle-gains weight on burning.
Give reason for the following:
Combustion and respiration show similarity.
Name the following:
The gas required for both combustion and rusting.
