Question

English grammar passive voice ,..acid turns litmus paper red
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Answer 1

Explanation:

litmus paper is turned red by acid.

Answer 2

Answer:

a form or set of forms of a verb in which the subject undergoes the action of the verb (e.g. they were killed as opposed to the active form he killed them ).

Light Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic or alkaline conditions, with the color change occurring over the pH range 4.5–8.3 at 25 °C (77 °F). Neutral litmus paper is purple. Litmus can also be prepared as an aqueous solution that functions similarly.