Advertisements
Advertisements
प्रश्न
Animal waste, oil and urea are some of the organic impurities present in sewage. Name two more organic impurities present in sewage.
Advertisements
उत्तर
Pesticides and fruits and vegetable wastes are organic impurities present in sewage.
APPEARS IN
संबंधित प्रश्न
Give reason for Silica gel pouches are kept in unused water bottle.
Give balanced chemical equation for the reaction of water with Sodium .
Give reason of Carbonated drinks are bottled under high pressure.
Give one word for the following statement :
The change of states of water from one form to another .
Give any three important uses of water.
Answer the following question:
Why is acid added to water before electrolysis ?
How do fishes and aquatic animals survive when the pond gets covered with thick ice?
Explain why:
Rain water does not leave behind concentric rings when boiled.
Explain why:
Water is an excellent liquid to use in cooling systems.
What are stalgmites and stalactites? How are they formed?
Compare the effect of soaps and detergents on hard water.
Give the importance of dissolved air – in water.
Fill in the blank:
The type of water softened by addition of washing soda is ______.
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 ____.
Condensation results in the formation of dew on grass.
Match the following
| 1. | Flood | Lake |
| 2. | Surface water | Evaporation |
| 3. | Sunlight | Water vapour |
| 4. | Cloud | Pole |
| 5. | Frozen water | Increased rainfall |
Water changes to ice at ______.
“Every Drop Counts” is a slogan related to
Water polluted by various human activities causes a number of water borne diseases. Which of the following is not a water borne disease?
