Advertisements
Advertisements
प्रश्न
Give a reason for the following:
Efflorescence is minimum during humid conditions.
उत्तर
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
संबंधित प्रश्न
Give reason for Silica gel pouches are kept in unused water bottle.
Explain how the peculiar variation of density of water with temperature can cause water— pipes to burst in very cold places.
Answer the following question:
Name two gases dissolved in natural water.
Water exists in all three states. Discuss.
Explain why:
Rivers and lakes do not freeze easily?
Answer in your own words.
Why is there a shortage of water even though it occupies about 71% of the earth’s surface?
State the causes and consequences of ‘eutrophication’.
If, at some place, it did not rain for a very long period of time, what would be its effect on the life of the people there?
Water levels in rivers increase greatly during ______.
Match the following
| 1. | Flood | Lake |
| 2. | Surface water | Evaporation |
| 3. | Sunlight | Water vapour |
| 4. | Cloud | Pole |
| 5. | Frozen water | Increased rainfall |
