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Consider the following: Type of Rocks Process of formation 1.Igneous Rocks Formed out of existing rocks undergoing recrystallization 2.Sedimentary Rocks The result of the deposition of fragments of rocks by exogenous processes. 3.Metamorphic Rocks Solidified from magma and lava   Which of the above pair/s is/are correctly matched?
The largest size of immobilised segment of dislocation in a Frank Read (FR) source contained in a polycrystalline material is of the order of grain size. In a metal of 10 μm grain size, the shear stress required to operate such a FR source is 100 MPa. If the grain size in the same metal is reduced to 10 μm, the shear stress required to operate such FR source would be . . . . . . . . MPa.
Consider the statement A, B, C on igneous rocks and choose the correct answer. Statement (A): Sedimentary rocks, when subjected to heat and pressure turn into igneous rocks. Statement (B): These rocks are found both on the earth's crust and deep inside the earth's crust. Statement (C): Granite and Basalt are examples of igneous rocks. 
According to geological classification, rocks are divided into three different categories i.e. Igneous rocks, Sedimentary rocks and Metamorphic rocks. In which category Granite, Basalt and Dolerite etc types of rocks fall?
Which of the statements is/are correct?
1. Igneous rocks are classified into Extrusive and Intrusive rocks.
2. Sedimentary rocks are also called as Primary rocks
3. Marble is an example of Metamorphic rocks
4. Coal is a sedimentary rock
Kamala has three cylindrical containers, each with radius 20 cm that she wants to fill with grain. If her bag of grain contains 100 kg of grain, and she fills all three containers to a height of 70 cm, how much grain will be left in the bag, if 1 kg grain occupies 3000 cm3 space? (Use π = \(\frac{{22}}{7}\))
In order to double its yield strength, the grain size of a steel of ASTM grain size number 2 should be changed to ASTM grain size number (neglect friction stress)
Consider the statements A, B, C on metamorphic rocks and choose the correct answer: A. When igneous and sedimentary rocks are subjected to heat and pressure they change to metamorphic rocks. B. Metamorphic rocks melt to form molten magma when subjected to great heat and pressure. C. Marble is a metamorphic rock.
Which of the following is/are correct about minerals and rocks (A) Generally metallic minerals are found in igneous and metamorphic rocks. (B) If a rock contains copper then the rock looks blue in color.  (C) Al ore minerals are not rocks. (D) All rocks are not ore minerals. 
Which of the following rocks have a chance to contain fossils? (A) Sedimentary rocks (B) Metamorphic rocks (C) Igneous rocks