The peculiear smell immediately after a shower is due to certain volatile chemical compounds released by a group of soil-inhibiting bacteria called streptomycete. These streptomycetes grouped as actinomycetes and are abundant in dry warm soil. when wetted by rain after a long dry spell, the streptomycetes release compounds such as geosmin and 2-methyl- isoborneol . This is the reason, why we get the musty odour only after the first rain of the rainy season.
Tuesday, April 14, 2009
Musty odour after shower
How does water cool in a mud pot
By the phenomenon of Evaporative cooling, water remains cool in a mud pot. As the pot made up with mud it has number of very minute pores, through which water can slowly ooze out. Thus these pores increase the surface area of water and consequently increases evaporation. For the evaporation of water, it requires some energy which is takes as heat from the water itself. This results in lowering the temperature of the water in the mud pot.
Friday, April 10, 2009
Water Test
CuSO4.5H2O is blue color chemical, on dehydration it looses its color and called as anhydrous copper sulphate. By adding this to the solutions only water forms blue color.
Guess it ! what Happens?
Yes exactly! whenever anhydrous CuSO4 added to water, it hydrated and turns to original color.
Subscribe to:
Posts (Atom)