Stalactites and Stalagmites form due to the precipitation of :
A). CaCO3
B). CaCl2
C). MgCl2
D). MgCO3
CaCO3
Stalactites and stalagmites are formed by water dripping or flowing from fractures on the ceiling of a cave. The dominant mineral in them is calcite (calcium carbonate) or CaCaO3. Their largest displays are formed in caves of limestone and dolomite. Other minerals that may be deposited include other carbonates, opal, chalcedony, limonite, and some sulfides.
1. Which one of the following is a major green house gas?
2. Taj Mahal is greatly affected due to :
3. German silver used for making utensils is an alloy of
4. Helium gas is filled in balloons because
5. Persons working in cement plants and lime stone quarries are prone to disease like
6. Manganite is an ore/mineral of
7. Select the one which is not a mixture:
8. Ozone depletion in the atmosphere is mainly caused by