On adding a few drops of universal indicator solution to three unknown colourless solutions P, Q, and R taken separately in three test-tubes shown in the diagrams, a student observed the changes in colour as green in solution P, red solution Q and violet in solution R.

The decreasing order of the pH of the three solution is :

(1) P > Q > R	(2) R > P > Q
(3) Q > P > R	(4) R > Q > P

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Updated on 10-Oct-2022 10:32:31

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P > QExplanation:From the above image of universal indicator, as P shows green colour, so it is neutral, Q shows red colour, so it is an acid and R shows violet colour, so it is a base.So, from the above discussion, we can arrange the given molecules in decreasing order a','sharer','toolbar=0,status=0,width=580,height=325');" href="javascript: void(0)" title="Share on Facebook"> P > QExplanation:From the above image of universal indicator, as P shows green colour, so it is neutral, Q shows red colour, so it is an acid and R shows violet colour, so it is a base.So, from the above discussion, we can arrange the given molecules in decreasing order a','sharer','toolbar=0,status=0,width=580,height=325');" href="javascript: void(0)" title="Share on LinkedIn">

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