``` * **Reasoning:** Clearly states the core topic (Darcy's Law and its applicability), includes a key concept (flow in porous media), and specifies the exam/year (GATE Civil 2020) for relevance to students. **2. Meta Description (within 160 characters for optimal display):** ```html ``` * **Reasoning:** Expands on the title, includes important keywords like "laminar," "transitional," "turbulent flow," "hydraulic gradient," and "flow velocity." It also reconfirms the exam context and offers a call to action/value proposition for users (exam preparation). **3. Meta Keywords (comma-separated, relevant terms):** ```html ``` * **Reasoning:** Includes the direct topic, related concepts, relevant engineering disciplines, the specific exam context, and the provided URL's keyword for internal consistency. **4. H1 Tag (Main heading for the page content):** ```html

Darcy's Law: Applicable Flow Regimes in Porous Media

``` * **Reasoning:** This H1 directly summarizes the question's core topic in a clear and concise manner, making it excellent for on-page SEO and user understanding. The actual question text can follow immediately after this H1. ---

Civil Engineering > GATE 2020 SET-1 > Fluid Mechanics

Velocity of flow is proportional to the first power of hydraulic gradient in Darcy's law. This law is applicable to

A

laminar flow in porous media

B

transitional flow in porous media

C

turbulent flow in porous media

D

laminar as well as turbulent flow in porous media

Correct : a

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Related Topics

darcy law hydraulic gradient Darcy's law porous media flow laminar flow turbulent flow GATE civil engineering 2020 fluid mechanics gate flow laws porous media

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