109/23

28.

29.

30.

31.

32.

33.

How much bleaching powder is needed to chlorinate 10000 litres of water whose
chlorine demand is 2 mg/I, assuming that the bleaching powder has 25% available
chlorine ?

A) 40g B) 80g C) 0.0125 g D) 0.025 g

Which one of the following is the purpose of providing a surge tank in a pipeline
carrying water ?

A) To store water

B) To increase the pressure throughout the pipeline

C) To store overflowing water

D) To protect the pipeline against water hammer

The main reinforcement of a RC slab consists of 16 mm bars at 100 mm spacing.
It is desired to replace the 16 mm bars by 12 mm bars, then the spacing of 12 mm
bars should be

A) 60 mm B) 100 mm C) 180 mm D) 90mm
Match the following :
SI.No. List-A List -B
i. IS 3370 a. Code of Practice for Design Loads — Snow Load
ர்‌. 15 875-4 b. Code of Practice for Design Loads — Special Loads and

Load Combinations

ர்‌. 15 1343 c. Concrete Structures of Storage of Liquids
iv. IS 875-5 d. Code of Practice for Prestressed Concrete
i it ii iv

A)c ०५ 9

B)a ‏ط‎ ௦ 0

@ 8 © 0 0

D)c 8 0 0

Maximum permissible slenderness ratio of a member subjected to compressive load
due to wind/earthquake
A) 180 B) 250 C) 350 D) 400

The losses in prestress in pre-tensioning system are due to Elastic deformation of
concrete

1. Friction

2. Shrinkage and Creep of concrete

3. Shrinkage and Elastic deformation

Select the correct answer using the codes given :

A) 1,2and3 B) 2 only 0) 18762 7) 300/0/