``` * **Reasoning:** This title is highly specific, incorporating the exam name (GATE 2018), subject (Mining Engineering), the type of content (Question/Calculation), the key equipment (SDL), and the main task (Coal Lifting Time). It also includes the brand name "Examprev" for recognition. It's concise and keyword-rich for search engines. **2. Meta Description (``):** ```html ``` * **Reasoning:** This description clearly outlines the problem users will solve, mentioning key variables like SDL, capacity, cycle time, blast details, and coal density. It starts with a call to action ("Practice GATE 2018 Mining Engineering") and includes important keywords to attract users searching for GATE prep or mining engineering problems. **3. Meta Keywords (``):** ```html ``` * **Reasoning:** This list includes the provided keywords and expands upon them with relevant terms from the content. It covers the subject, exam, specific equipment, key operational parameters, and the nature of the calculation, ensuring a broad range of relevant search queries are addressed. **4. H1 Tag (`

`):** ```html

GATE 2018 Mining Engineering Question: SDL Coal Lifting Time Calculation

``` * **Reasoning:** The H1 tag serves as the primary heading for the page content. It should mirror the title's core message but focus solely on the page's content, without the brand name. This H1 is clear, direct, and contains the most important keywords, indicating to both users and search engines what the page is about.

Mining Engineering > GATE 2018 > Underground Coal Mining

An SDL of 1.0 tonne capacity operates with a cycle time of 6 minutes. The dimension of the face is 4 1 m×3 m. Five blasts are conducted per shift with an average pull of 1.2 m. If the density of blasted coal is 0.8 tonne/m³, the time required by the SDL in the shift to lift all the prepared coal in hours is __________.

Correct : 5.6

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