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Question
Slate and laterite are examples of _______.
स्लेट और लैटेराइट _______ के उदाहरण हैं।
A.
argillaceous rock
B.
argillaceous and calcareous rocks, respectively
C.
siliceous rock
D.
calcareous rock
Answer ( Option A)

argillaceous rock

Solution

According to the chemical classification of rocks, they are classified as follows
 
1) Siliceous rocks:- The rocks which contain silica as the main constituent is called as siliceous rocks
Ex: Granite, Gneiss, Trap, Basalt, Sandstone, and Quartzite.
2) Argillaceous rocks:- The rocks which contain clay or alumina as a main constituent is called as argillaceous rocks.
Ex: Slate, Laterite, and Kaolin
3) Calcareous rocks:- The rocks which contain lime or calcium as the main constituent are called calcareous rocks.
Ex: Marble, Limestone, and Dolomite

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