RRB Group D 22-Sep-2018 Shift 1 Solved Paper

Question : 11 of 100

Marks: +1, -0

Litmus solution is extracted from:

Hydrangea
Geranium
Petunia
Lichen

Solution:

Litmus is a water-soluble mixture of different dyes extracted from lichens. It is often absorbed onto filter paper to produce one of the oldest forms of

{pH}

indicator which is used to test materials for acidity.

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