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JEE Advanced 2018 | Paper - 2 | Complete Solution

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When the strip of pH paper was put in a given solution the pH paper changes to orange red. The given solution is most likely to be of:

JEE Advanced 2018 | Paper - 1 | Complete Solution

A blue litmus paper was first dipped in dil. HCl and then in dil. NaOH solution. It was observed that the color of litmus paper

A blue litmus paper was first dipped in dil .HCl and then in dil .NaOH solution .It was observed that the colour of the litmus paper