73.

74.

75.

76.

77.

78,

79.

80.

Early gain of strength of cement is due to:
(A) 058 (B) 058
(0) CoA (D) Both (B) and (C)

Which of the following is responsible for most of undesirable properties of =
(லே (B) 0%
(C) CsA @) CAP

In members where cracking in the tensile zone is harmful either because they are exposed to
the effects of weather or continuously exposed to moisture, the limit of maximum cracking
width as per IS-456: 2000 is :

(A) 0.3mm ൯) 0.2mm

(0) 0.1mm ∙ (D) 0.03 mm

As per IS 456 -2000, the diameter of the reinforcing bars in slabs shall not exceed :
(A) One eighth of the total thickness of the slab
(B) One tenth of the total thickness of the slab
(C) One sixth of the total thickness of the slab ٠
(D) One fourth of the total thickness of the slab ۱

The nominal maximum size of coarse aggregate should be as large as possible within the
limits specified but in no case greater than :
(ಗಿ) One-third the thickness of member
(B) One-fourth the thickness of member
(() One-fifth the thickness of member
(9) One-sixth the thickness of member
provided that the concrete can be placed without difficulty so as to surround all
the reinforcement

In steel structure, the slenderness ratio of lacing bars for compression members shall not
exceed :

(A) 90 (B) 250

(©) 180 (0) 145

In anaerobic treatment of wastewater, the formation of methane is through :
(ಗಿ) Conversion of acetates only ∙
(B) Conversion of hydrogen and carbon dioxide only
(C) Both acetate and hydrogen
(D) None of the above

The incineration of municipal aolid wastes may result in the formation of :
(A) Dioxins and Furans (B) Methane’
(0) Chloroflouro carbon {D) None of the above

005/2016 12 A