Question 11
Four factories are situated along some small rivers, which merge into one big
river. Factories W, X, Y and Z produce chemicals W, X, Y and Z respectively.
Henry collects some samples of water and tests them for the chemicals they
contain.
Chemical W
Chemical X
Chemical Y
Chemical Z
Sample P
√
√
Sample Q
√
√
Sample R
√
√
Sample S
√
√
√
Sample T
√
√
√
Which one of the following correctly identifies where samples P, Q, R, S and T
were collected?
Sample P
was collected
at
Sample Q
was collected
at
Sample R
was collected
at
Sample S
was collected
at
Sample T
was collected
at
A.
A
B
E
D
C
B.
B
A
C
D
E
C.
C
B
A
E
D
D.
D
E
B
C
A
Factory W
Factory X
Factory Y
Factory Z
A
D
B
C
E
water flow
river. Factories W, X, Y and Z produce chemicals W, X, Y and Z respectively.
Henry collects some samples of water and tests them for the chemicals they
contain.
Chemical W
Chemical X
Chemical Y
Chemical Z
Sample P
√
√
Sample Q
√
√
Sample R
√
√
Sample S
√
√
√
Sample T
√
√
√
Which one of the following correctly identifies where samples P, Q, R, S and T
were collected?
Sample P
was collected
at
Sample Q
was collected
at
Sample R
was collected
at
Sample S
was collected
at
Sample T
was collected
at
A.
A
B
E
D
C
B.
B
A
C
D
E
C.
C
B
A
E
D
D.
D
E
B
C
A
Factory W
Factory X
Factory Y
Factory Z
A
D
B
C
E
water flow