Samples A, B, C and D are tested for their nature using turmeric and Phenolphthalein and the following observations are recorded.
A- turns reddish-brown on adding turmeric
B- turns pink on adding Phenolphthalein
C- turns yellow on adding turmeric
D- remains colourless on adding Phenolphthalein
What can be concluded about the nature of A, B, C and D?
1
A, B are acids and C, D are bases
2
A, C are acids and B, D are bases
3
A, D are acids and B, C are bases
4
A, B are bases and C, D are acids