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delhi police question paper constable 2009
in neutral solutions ph paper turns to blue!
model paper
Litmus paper is red for acidic solutions and is blue for basic solutions.
Red color in acidic solutions and blue color in basic solutions.
Litmus paper: red color in acidic solutions and blue color in basic solutions.Phenolphthalein: no color in acidic solutions.
Yes, because litmus paper remains blue in alkaline solutions and turns red in acidic solutions.
The color is red in acidic solutions and blue in basic solutions.
Red color in acidic solutions and blue color in basic solutions.
Red color in acidic solutions and blue color in basic solutions.
Red color in acidic solutions and blue color in basic solutions.
Red color in acidic solutions and blue color in basic solutions.
Red color in acidic solutions and blue color in basic solutions.