92.

98.

94.

96.

97.

99,

Bleaching powder containing 25% of available chlorine is used for treating the drinking
water. If the chlorine demand of water is 0.2 mg/lt, the bleaching powder required for
treating 1 litre of water is : ∎

(4) 0.06 mg (B) 0.8mg
(0 12mg (D) 1.25 ೫8
Expected value of pH for fresh sewage is :
(4) 7.5 छ) 6
© 4 0) 0
Osmoscope is used for measuring :
(ಗಿ) turbidity of water (ए) ലിഡ്‌: of water
(0 odour of water (D) temperature of water

2 million litres of water per day is passing through a sedimentation tank, which is 6 m wide,
15 m long and having water depth of 3 m. The detention time of the tank 18 :

(A) 688 യ 3.24 ‏معط‎
‎(©) 4.25hrs (D) 6.24 hrs
To work from the whole to the part principle is followed in surveying to :
(ಗ) prevent accumulation ೦8 ೧೯೯೦೫೫ (8) mplete the surveying quickly
(C) make the plotting easy (D) all the above
The last reading taken from any leveling station to the levelling staff is known as :
(മ) fore sight (൮) intermediate sight
(0) back sight (D) temporary sight

The reading taken to the levelling staff kept at a point A from a levelling station of height
100 m is 2.50 m. Then the reduced level of the point A is :

(ಗು) 1025 m (ए) 98.0m
(© 985m @D 975m
Number of horizontal hairs in a stadia diaphragm is :
@ 1 ® 2
© 3 फ) 4
100. Cause for error in tacheometric surveying

(ಗ) 00880081 (13) instrumental
(C) natural (D) all the above

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