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प्रश्न
Why do you think oxygen dissolved in water is important for the survival of aquatic animals and plants?
उत्तर
The oxygen which is dissolved in water is used by animals for breathing and used by plants for breathing and photosynthesis.
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संबंधित प्रश्न
Very Short Answer Type Question:
Why do we need to group materials? Give one reason.
Materials which can be compressed or cut easily are called _______.
Oil mixes with water.
Vinegar dissolves in water.
Choose the odd one:
Which among the following is an example of dull material?
Materials which have ups and downs on their surface are called ______.
What is material?
Some of the following statements are incorrect. Find the incorrect statements and correct them.
- The property of metals by virtue of which they can be drawn into wires is called ductility.
- Metals are good conductors of electricity but poor conductor of heat.
- Articles made up of metals produce ringing sound when struck hard.
- Oxides of non-metals and metals are acidic in nature.
- A less reactive metal displaces a more reactive metal from its salt solution in water.
Fill in the blanks to complete the following paragraph.
The name of the product formed in the reaction of sulphur and ______ is sulphur dioxide gas. When sulphur dioxide is dissolved in ______, sulphurous acid is formed. The sulphurous acid turns ______ litmus paper to ______. Generally, oxides of ______ are acidic in nature.
After completing the paragraph, write two questions which you can raise on the basis of this information.
