189. Which of the following rock is least effected by chemical weathering processes? A. Shale B. Granite C. Basalt D. Limestone /SAGAP LINI/EPCITV 201s
Shale may comprise of many minerals including those of feldspar, iron rich minerals, sulphide minerals and even carbonate rich minerals, all of which are not very stable at surface...
The answer is B) granite as it contains quartz which is the mineral which is least affected by chemical weathering. All other rocks are affected by chemical weathering.