Advertisements
Advertisements
Question
Give a reason for the following:
Efflorescence is minimum during humid conditions.
Advertisements
Solution
Efflorescence Occurs : When The Vapour Pressure Of Hydrated Crystals Exceeds The Vapour Pressure Of The Atmospheric Humidity.
Hence efflorescence is minimum during humid conditions.
APPEARS IN
RELATED QUESTIONS
Describe the water-cycle in nature.
Give balanced chemical equations to show the reaction between Coke and steam.
Explain why:
Table salts become sticky on exposure to humid air during the rainy season.
Of the total water available on the earth, fresh water forms ______ percent.
Household detergents contain mainly ______ and pollute water bodies.
Name a deliquescent substance’.
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 |
What happens when a spoonful of sugar, sawdust, and soil are added to a glass of water?
Condensation results in the formation of dew on grass.
Dissolve two spoons of common salt in half a cup of water. Now if you want to get the salt back, what will you do?
