50 to 60

100 to 150

500 to 600

1400 to 1500

0.25 to 0.35 mm

0.35 to 0.60 mm

0.60 to 1.00 mm

1.00 to 1.80 mm

(i) and (ii)

(ii) and (iii)

(i) and (iv)

(ii) and (iv)

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

A is true but R is false.

A is false but R is true.

excessive negative head

mud ball formation

higher turbidity in the effluent

low temperature