Question detail

How does bioleaching work?

Try the question, check the answer, then read the explanation to understand the curriculum point.

Show answer Topic hub Objective page

At a glance

MCQ

Type

practice

Style

Topic

Using the Earth's resources and obtaining potable water

Question

A. Using plants to absorb metals
B. Using bacteria to produce leachate solutions containing metals
C. Using electrolysis to extract metals
D. Using traditional mining techniques

Answer

The correct option is Using bacteria to produce leachate solutions containing metals. This answer is correct because it matches the approved learning objective to compare phytomining and bioleaching with traditional mining in terms of moving and disposing of rock. (HT only) in the subtopic Alternative methods of extracting metals.

Explanation

The correct option is Using bacteria to produce leachate solutions containing metals. Using bacteria to produce leachate solutions containing metals is correct because it directly supports the approved learning objective to compare phytomining and bioleaching with traditional mining in terms of moving and disposing of rock. (HT only). This belongs to the subtopic Alternative methods of extracting metals within Using the Earth's resources and obtaining potable water, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from Alternative methods of extracting metals.

Common mistake

Confusing Mining Methods

Students often confuse phytomining and bioleaching with traditional mining methods, thinking they are the same.

Do not treat this as a general statement about HT only. Instead, answer by clearly linking the correction to compare phytomining and bioleaching with traditional mining in terms of moving and disposing of rock. (HT only) in Alternative methods of extracting metals. This keeps the response inside Using the Earth's resources and obtaining potable water and prevents a vague or off-topic GCSE answer. The mistake to avoid is: students often confuse phytomining and bioleaching with traditional mining methods, thinking they are the same.

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