Advertisements
Advertisements
प्रश्न
A mixture (x) in water contains suspended solids, organic impurities, inorganic impurities (a), nutrients (b), disease-causing bacteria and other microbes. Give names for (x), (a) and (b)?
उत्तर
(x) – sewage
(a) – nitrates, phosphates and metals
(b) – phosphorus and nitrogen
APPEARS IN
संबंधित प्रश्न
Give balanced chemical equation for the reaction of water with Sodium oxide.
Two gases found dissolved in natural water are
The ultimate source of all water on the earth is
Give any three important uses of water.
Answer the following question:
Why is acid added to water before electrolysis ?
Answer the following question:
What is the chemical composition of water ? Give its molecular formula.
State whether the given statement are true or false. If true, write the reason.
Water availability per person in India is declining.
Complete the statement by filling the blank with the correct word from the option.
Kerosene & water form a _______ mixture.
Give a reason for the following:
A crusty ‘boiler scale’ is formed in boilers, when hard water is used.
Which are the three states of water?
_____ is a type of rainwater harvesting.
Look at the map of Tamilnadu showing annual rainfall and answer the questions given below
- Identify the districts that get only low annual rainfall in Tamilnadu.
- Identify the districts that get a medium annual rainfall in Tamilnadu.
- State the districts that enjoy high annual rainfall in Tamilnadu.
Water is colourless, odourless and _______.
“Every Drop Counts” is a slogan related to
State whether the following statement is True or False. If false, give the correct statement.
Snow and ice both are solid forms of water.
An open-drain system is a breeding place for which of the following
Pick from the following one chemical used to disinfect water.
Animal waste, oil and urea are some of the organic impurities present in sewage. Name two more organic impurities present in sewage
Write any two activities which require more than a bucket of water.
Fill in the blanks selecting words from the following list (snow, rain, clouds, vapour, evaporation, transpiration.) Water, as _____ goes into atmosphere by the processes of ______ and _____ and forms ________, which on condensation fall in the form of ______ and _______.
