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प्रश्न
State whether the following statement is True or False. If false, give the correct statement.
Snow and ice both are solid forms of water.
विकल्प
True
False
उत्तर
True
APPEARS IN
संबंधित प्रश्न
Why do organisms need water?
Name the gas produced when fossil fuel is burnt.
What are the main causes of water pollution ? How can it be controlled ?
Two gases found dissolved in natural water are
State the importance of the solubility of CO2 and O2 in water.
Explain why:
Water is an excellent liquid to use in cooling systems.
State the importance of water for all general uses.
Give the influence of pressure.
Select the correct word from the words in option to complete the sentence:
If pressure on the surface of water increases its boiling point ____ and freezing point ____.
True or false? Correct the wrong statement.
We get rainwater throughout the year.
Pour water from the ice tray into a kettle. Ask an elder at your home to heat the kettle and observe the mouth of the kettle when the water starts boiling.
What do you see?
Suggest some ideas to save rainwater in your school.
Write a few slogans of your own on the topic “Save Water”
______ plays a vital role in the evolution and survival of life.
Nitrogen is used for the treatment of drinking water.
The jumbled word is given here. Write the correct form of each word.
CHARREGE
Pick from the following one chemical used to disinfect water.
Match the items of Column I with the items of Column II with reference to sewage.
| Column I | Column II | ||
| (a) | Inorganic impurities | (i) | phosphorus and nitrogen |
| (b) | Organic impurities | (ii) | nitrates and phosphates |
| (c) | Nutrients | (iii) | cholera and typhoid |
| (d) | Bacteria | (iv) | pesticides and herbicides |
Fill in the blanks in the following statements using words given in the box.
air, handpumps, cholera, water, large, ground
A very _________ number of our people defecate in the open. It may cause _________ pollution and soil pollution. Both the surface water and _________ water get polluted. _________ water is the source for wells, tubewells and _________. Thus it becomes the most common route for _________ borne diseases like _________, dysentery, etc.
Why is there a need for conserving water? Give two reasons.
