50.

51.

52.

53.

54

55.

56.

57.

58.

Type 2 settling is also known as
(A) Discrete settling (B) Compressed settling
(೮) Stage settling (2) Flocculent settling

Maximum runoff will be obtained for a rain having duration equal to
(^) Time of concentration (B) Overland flow time
(C) Channel flow time (D) Gutter flow time

A city has a population of 20000 with an area of 1000000 Square metres. The average
runoff coefficient is 0.72 and time of concentration 30 minutes. The maximum storm
water discharge is

(^) 1 Cumec (B) 10 Cumecs
(C) 40 Cumecs (2) 4Cumecs

Streeter-Phelps equation gives
(^) Total organic content (B) Biochemical oxygen demand
(C) Dissolved oxygen deficit (D) Chemical oxygen demand

Dairy wastes are mainly treated by
(A) Photocatalysis (B) Chemical oxidation
(C) Activated sludge process (D) Phytoremediation

Major component contributing to total solids in Sulfite waste liquor is
(^) Calcium (B) Sulphur
(C) Sugar (D) Lignin

The atmosphere is said to be unstable when
(൧) Environmental lapse rate > Adiabatic lapse rate
(B) Environmental lapse rate = Adiabatic lapse rate
(C) Environmental lapse rate > Adiabatic lapse rate
(D) Environmental lapse rate does not have any relation with Adiabatic lapse rate

“Fanning” the spreading of plume horizontally occurs when the lapse rate is
(A) Negative (B) Positive
(C) Neutral (D) Adiabatic

Which among the following control device has the maximum particulate removal
efficiency ?

(^) Cyclone separator (B) Spray Tower

(C) Fabric Filter (D) Cyclone scrubber

ன சர ச ‏سس‎ சை. ಎಂದಾ
[.1.0.]