Question

A solution $X$ gives orange colour when a drop of universal indicator is added to it. In the other hand, another solution $Y$ gives blueish green colour when a drop of universal indicator is added to it. What are the types of solution $X$ and $Y$ and what type of $pH$ would they have?

• A. $X:\text{Acidic},pH>7;Y:\text{Basic},pH<7$
• B. $X:\text{Basic},pH>7;Y:\text{Acidic},pH<7$
• C. $X:\text{Acidic},pH<7;Y:\text{Basic},pH>7$
• D. $X:\text{Neutral},pH\approx 7;Y:\text{Basic},pH>7$

Answer 1

The correct option is C $X:\text{Acidic},pH<7;Y:\text{Basic},pH>7$

Solution of $X$ gives orange colour when a drop of universal indicator is added to it, which tells us that it is acidic in nature.
This means the $pH$ would be less than $7$.

Solution $Y$ gives bluish green colour when a drop of universal indicator is added to it, which tells us that it would be little basic in nature. This means that the $pH$ would be more than $7$.