Question

The PH of a solution is measured by. (a)litmus (b)methyl orange (c) phenolphthalein (d)universal PH indicator​

Answer 1

Answer:

AMPLITUDE -- THE MAXIMUM DISPLACEMENT OF A VIBRATING OBJECT FROM ITS CENTRAL POSITION.....

Frequency -- the number of oscillation per second........

Time period.-- the time taken by A vibrating ( oscillating ) object to complete one vibration....

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Answer 2

Answer:

(c) Phenolphthalein

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