Advertisements
Advertisements
Question
Cleaning of water is a process of removing ______.
Advertisements
Solution
Cleaning of water is a process of removing pollutants.
APPEARS IN
RELATED QUESTIONS
What is the major source of fresh water in the city/town/village where you live?
Give reason for Silica gel pouches are kept in unused water bottle.
Give reason On opening a bottle of a cold drink, a fizz sound is heard.
Give balanced chemical equation for the reaction of water with Carbon dioxide.
Match the statements in column A with that in column B.
| Column A | Column B |
| (a) deliquescent substance | (1) sodium bicarbonate |
| (b) hygroscopic substance | (2) magnesium chloride |
| (c) efflorestance substance | (3) conc. sulphuric acid |
| (d) substance causing temporary hardness | (4) washing soda |
What are its causes and how can water pollution be controlled ?
Explain why:
Air dissolved in water contains a higher proportion of oxygen.
Explain why:
Rain water does not leave behind concentric rings when boiled.
Explain why:
Table salts become sticky on exposure to humid air during the rainy season.
What will happen if the total supply of potable water is finished?
Answer in your own words.
Why is there a shortage of water even though it occupies about 71% of the earth’s surface?
Select the correct answer of the following statement:
A decahydrate crystal.
Complete the statement by filling the blank with the correct word from the option.
Solubility of most solids ___ with rise in temperature.
What is meant by the term ‘offshore drilling’. State the main environmental effects of offshore drilling.
Match the terms in List I with the correct answers in List II.
| List I | List II |
| 1. Solubility in a given solvent decreases with an increase in temperature. | A: Na2SO4.10H2O |
| 2. A white efflorescent crystal | B: NaOH |
| 3. A hygroscopic dehydrating agent | C: Ca(HCO3)2 |
| 4. A deliquescent alkali | D: conc. H2SO4 |
| 5. A substance present in temporary hard water | E: CaSO4 |
Which state government made rain water harvesting mandatory in the year 2001?
________ of water is in oceans and seas.
A jumbled word is given here. Write the correct form of the word.
WOSN
Look at the figure.
Write down activities shown in this figure in which water is being used.
Construct a crossword puzzle of your own using the keywords.
