When water is heated, it expands, which means its density decreases slightly. As the water expands, the wood will appear to sink a little because it needs to displace more water to maintain buoyancy. Therefore, the correct answer is sink a little.
A piece of wood is floating in water. If we heat the water, the piece of wood will:
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Question context
This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.