28.

29.

30.

81.

82.

88.

84.

88.

87.

88.

Steel reinforcement bars in RCC is measured in :

(A) Quintals (B) Metre

(C) Number യ ധാ
The years purchase for 6% interest is :

ಯ) 20 © 8

¢) 7 0) 0.06

For 45° cranked or bent up bar of dia “d”, the additional length of 2 bent up is
approximately :

(^) 09d (8) ०.45 १
(0) 0.84 0 84
The initial setting time of Ordinary Portland cement as per BISis :
(A) not more than 100 minutes (B) not more than 80 minutes
(0) not less than 80 minutes (D) less than 30 minutes

The main funetion of Alumina in brick earth is to:
(^) impart plasticity (B) increase durability
(C) prevent shrinkage (D) increase impermeability

Ultimate Strength of Ordinary Portland Cement is provided by :
(^) Tricaleium Silicate (B) Diealeium silicate
(C) Tetracalcium alumino ferrite (D) Tricaleium aluminate

Proneness to segregation of fresh concrete is better tested by :

(A) Slump test (B) Flow test

(C) Vee Bee test (D) Compaction factor test
As the fineness modulus of aggregate increases its particle size :

(^) decreases (8) increases

(C) remains same (D) none of these

‘Float’ which does not interfere with the start of the subsequent activity in a project is :

(A) Total float (B) Independent float
)0 Free float (D) Interfering float
Quality of reinforeing steel is evaluated by :
(A) Compressive strength (B) Tensile strength, duetility
(C) Yield strength, ductility (D) None of the above
Salt present in brick earth may cause :
(A) Brittleness (B) Efflorescence
(C) Discolouration (D) None of the above

7 013/2020