``` * **Explanation:** Includes "Venturi Meter," "Pressure Drop," "Flowrate," "GATE 2017," "Chemical Engineering," "Q8" (highly specific identifier), and the brand "Examprev." It also highlights the core numerical relationship (Q2/Q1=2). --- **2. Meta Description Tag (``):** * **Optimal Length:** ~150-160 characters * **Purpose:** Appears under the title in search results. Should summarize the page content and encourage users to click. ```html ``` * **Explanation:** Expands on the title, mentions ΔP and Q specifically, reiterates the problem context, and adds a call to action/value proposition ("Ideal for GATE exam prep and fluid mechanics studies"). --- **3. Meta Keywords Tag (``):** * **Purpose:** While less impactful for Google SEO directly, some search engines or internal site searches might still use them. Good for internal categorization. ```html ``` * **Explanation:** Includes the provided keyword and expands with relevant terms related to the topic, exam, and subject. --- **4. Canonical URL Tag (``):** * **Purpose:** Tells search engines the preferred URL for this content, preventing duplicate content issues if the page is accessible via multiple URLs. ```html ``` * **Explanation:** Uses the exact URL provided, ensuring consistency. --- **5. Open Graph Tags (for Social Media Sharing - Facebook, LinkedIn, etc.):** * **Purpose:** Controls how the content appears when shared on social media platforms. ```html ``` * **Explanation:** Provides clear, concise information for social sharing. The `og:title` is slightly more descriptive than the meta title for social context. --- **6. Twitter Card Tags (for Twitter Sharing):** * **Purpose:** Similar to Open Graph, controls how the content appears when shared on Twitter. ```html ``` * **Explanation:** Specific tags for Twitter sharing. `summary_large_image` is generally preferred if a good image is available, otherwise `summary`. --- **7. H1 Tag (On-page Main Heading):** * **Purpose:** The main visible heading on the page. Crucial for both user experience and SEO. Should clearly state the page's topic. ```html

Venturi Meter: Pressure Drop & Volumetric Flowrate Relationship (GATE 2017 Chemical Engineering Q8)

``` * **Explanation:** This heading is highly descriptive, incorporating all key elements of the question, making it clear to both users and search engines what the page is about.

Chemical Engineering > GATE 2017 > Venturi Meter

In a venturi meter, ΔP₁ and ΔP₂ are the pressure drops corresponding to volumetric flowrates Q1 and Q2. If Q2/Q1 = 2, then ΔP2/ΔP1 equals

A

(A) 2

B

(B) 4

C

(C) 0.5

D

(D) 0.25

Correct : b

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