Test tube | Colour change with phenolphthalein indicator |
1 | Colourless |
2 | Pink |
3 | Colourless |
4 | Pink |
A)
1
2
3
4
Lime juice
Soda water
Lime water
Vinegar
B)
1
2
3
4
Common salt solution
Lemon juice
Vinegar
Lime water
C)
1
2
3
4
Lemon juice
Lime water
Common salt solution
Baking soda
D)
1
2
3
4
Baking soda
Lemon juice
Lime water
Soda water
Correct Answer: C
Solution :
Phenolphthalein remains colourless in acidic solution (lemon juice) and neutral solution (common salt solution). In basic solution (lime water and baking soda) it turns pink.You need to login to perform this action.
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