1.

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» 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


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