Question

Which rock is a sedimentary rock?

• A. Marble
• B. Conglomerate
• C. Slate
• D. Gneiss

Hint:

Remember: \[ \boxed{ \begin{aligned} \text{Sedimentary} &\rightarrow \text{Conglomerate, Sandstone, Shale} \text{Metamorphic} &\rightarrow \text{Marble, Slate, Gneiss} \end{aligned} } \]

Answer 1

The Correct Option is B

Step 1: Classify the given rocks. \[ \begin{aligned} \text{Marble} &\rightarrow \text{Metamorphic}, \text{Slate} &\rightarrow \text{Metamorphic}, \text{Gneiss} &\rightarrow \text{Metamorphic}, \text{Conglomerate} &\rightarrow \text{Sedimentary}. \end{aligned} \]

Step 2: Choose the sedimentary rock. Conglomerate is formed by the cementation of rounded rock fragments. Hence, \[ \boxed{\text{Conglomerate}} \] is the correct answer. Therefore, \[ \boxed{(B)} \] is the correct answer.