Question

2 mL of ethanoic acid was taken in each of test-tube I and test-tube II. A red litmus paper was introduced in test-tube I and a pH paper was introduced in test-tube II. The experiment was performed by four students A, B, C and D, they reported their observations as given below Student
Action on red litmus
Action of pH paper
A
B
C
D
Turned blue
Remains unchanged Turned blue
Remains unchanged
Turned pink
Turned green
Turned blue
Turned pink
The correct set of observations was made by the student (1) A
(2) B
(3) C
(4) D

Answer 1

Answer:

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