Subject :NSO Class : Class 5
Read the given statements regarding types
of rock.
(i) P is used by dentists for polishing teeth.
(ii) Q is rich in mineral calcium carbonate and is used for making cement.
(iii) R is used for making statues and floorings.
Select the option which correctly identifies the category of rocks to which P, Q and R belongs.
| P | Q | R | |
|---|---|---|---|
| A | Metamorphic rock |
Igneous rock | Sedimentary rock |
| B | Igneous rock | Metamorphic rock |
Sedimentary rock |
| C | Igneous rock | Sedimentary rock |
Metamorphic rock |
| D | Sedimentary rock |
Metamorphic rock |
Igneous rock |
Powdered form of pumice is used by dentist to polish teeth. It is a type of igneous rock (P). Limestone is rich in calcium carbonate and it is used for making cement. It is a type of sedimentary rock (Q). Marble is used to make statues and floorings. It is a type of metamorphic rock (R) so,correct answer is option C.
Ans 1:
Class : Class 7
Powdered form of pumice is used by dentist to polish teeth. It is a type of igneous rock (P). Limestone is rich in calcium carbonate and it is used for making cement. It is a type of sedimentary rock (Q). Marble is used to make statues and floorings. It is a type of metamorphic rock (R) so,correct answer is option C.
Ans 2:
Class : Class 7
Powdered form of pumice is used by dentist to polish teeth. It is a type of igneous rock (P). Limestone is rich in calcium carbonate and it is used for making cement. It is a type of sedimentary rock (Q). Marble is used to make statues and floorings. It is a type of metamorphic rock (R) so,correct answer is option C.
Ans 3:
Class : Class 7
Metamorphic rock