A visually impaired student would need an indicator that provides information through a sense other than sight. In this case, the sense of smell can be used.

Out of the given options, vanilla essence can be used as an acid-base indicator by a visually impaired student.

Here's why:

1. Litmus: This is typically used as a visual indicator. It changes color in response to an acid or base, which wouldn't be helpful for a visually impaired student.

2. Turmeric: This is also a visual indicator. It changes color in the presence of a base, but not in an acid. Again, this wouldn't be helpful for a visually impaired student.

3. Vanilla essence: This can be used as an olfactory (smell) indicator. It changes its smell in response to a change in pH. This would be helpful for a visually impaired student.

4. Petunia leaves: These are not typically used as indicators in a chemistry setting, and wouldn't be helpful for a visually impaired student.

So, the best choice would be vanilla essence.

Question

A visually impaired student would need an indicator that provides information through a sense other than sight. In this case, the sense of smell can be used.

Out of the given options, vanilla essence can be used as an acid-base indicator by a visually impaired student.

Here's why:

1. Litmus: This is typically used as a visual indicator. It changes color in response to an acid or base, which wouldn't be helpful for a visually impaired student.

2. Turmeric: This is also a visual indicator. It changes color in the presence of a base, but not in an acid. Again, this wouldn't be helpful for a visually impaired student.

3. Vanilla essence: This can be used as an olfactory (smell) indicator. It changes its smell in response to a change in pH. This would be helpful for a visually impaired student.

4. Petunia leaves: These are not typically used as indicators in a chemistry setting, and wouldn't be helpful for a visually impaired student.

So, the best choice would be vanilla essence.

Knowee AI · Accepted Answer

A visually impaired student would need an indicator that provides information through a sense other than sight. In this case, the sense of smell can be used.

Out of the given options, vanilla essence can be used as an acid-base indicator by a visually impaired student.

Here's why:

1. Litmus: This is typically used as a visual indicator. It changes color in response to an acid or base, which wouldn't be helpful for a visually impaired student.

2. Turmeric: This is also a visual indicator. It changes color in the presence of a base, but not in an acid. Again, this wouldn't be helpful for a visually impaired student.

3. Vanilla essence: This can be used as an olfactory (smell) indicator. It changes its smell in response to a change in pH. This would be helpful for a visually impaired student.

4. Petunia leaves: These are not typically used as indicators in a chemistry setting, and wouldn't be helpful for a visually impaired student.

So, the best choice would be vanilla essence.

Which one of the following can be used as an acid-base indicator by a visually impaired student ? LitmusTurmericVanilla essencePetunia leaves

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