Water samples (X and Y) from two different sources were brought to the laboratory for the measurement of dissolved oxygen (DO) using modified Wrinklier method. Samples were transferred to 300 ml BOD bottles. 2 ml of MnSO

Both the samples were devoid of DO

Sample X was devoid of DO while sample Y contained DO

Sample X contained DO while sample Y was devoid of DO

Water samples (X and Y) from two different sources were brought to the

1.	Water samples (X and Y) from two different sources were brought to the laboratory for the measurement of dissolved oxygen (DO) using modified Wrinklier method. Samples were transferred to 300 ml BOD bottles. 2 ml of MnSO
A.	Both the samples were devoid of DO
B.	Sample X was devoid of DO while sample Y contained DO
C.	Sample X contained DO while sample Y was devoid of DO
D.	Both the samples contained DO
Answer» D. Both the samples contained DO

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Water samples (X and Y) from two different sources were brought to the laboratory for the measurement of dissolved oxygen (DO) using modified Wrinklier method. Samples were transferred to 300 ml BOD bottles. 2 ml of MnSO

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