Correct : c
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``` * **Reasoning:** This title is concise, immediately addresses the core of the question (highest fastness, covalent bond), includes the relevant exam context (GATE Textile Engineering 2013 Q18), and uses strong keywords for search engines. **2. Meta Description:** ```html ``` * **Reasoning:** This description expands on the title, clearly stating it's a solution to an exam question. It lists the different bond types from the options, highlights the key concept of "highest washing fastness" and "superior dye durability," and explicitly mentions the "covalent bond" as the answer, encouraging clicks. It's informative and keyword-rich. **3. Meta Keywords:** ```html ``` * **Reasoning:** This list includes the provided keyword, expands on it with specific terms from the question (bond types), broad industry terms (textile engineering, technology, chemistry), and user intent terms (exam questions, solutions). **4. H1 Tag (Main Heading):** ```html
Correct : c
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