With increase in moisture content, the bulking of sand_______________?
(A) increases
(B) decreases
(C) first increases to a certain maximum value and then decreases
(D) first decreases to a certain minimum value and then increases
In brick masonry the bond produced by laying alternate headers and stretchers in each course is known as_______________?
(A) English bond
(B) double flemish bond
(C) zigzag bond
(D) single flemish bond
The amount of water used for one kg of distemper is_____________?
(A) 0.2 liter
(B) 0.4 liter
(C) 0.6 liter
(D) 0.8 liter
Assertion A : Normally turpentine oil is recommended as thinner for indoor painting. Reason R : Turpentine oil is costlier than other thinners. Select your answer according to the coding system given below ?
(A) Both A and R are true and R is the correct explanation of A
(B) Both A and R are true but R is not the correct explanation of A
(C) A is true but R is false
(D) A is false but R is true
Which of the following is the purest form of iron ?
(A) cast iron
(B) wrought iron
(C) mild steel
(D) high carbon steel
The basic purpose of a retarder in concrete is_____________?
(A) to increase the initial setting time of cement paste in concrete
(B) to decrease the initial setting time of cement paste in concrete
(C) to render the concrete more water tight
(D) to improve the workability of concrete mix
The most commonly used retarder in cement is_________________?
(A) gypsum
(B) calcium chloride
(C) calcium carbonate
(D) none of the above
The ultimate tensile strength of structural mild steel is about_________________?
(A) 160N/mm2
(B) 260N/mm2
(C) 420 N/mm2
(D) 520 N/mm2
Which of the following cements contains maximum percentage of dicalcium silicate?
(A) ordinary Portland cement
(B) low heat cement
(C) rapid hardening cement
(D) sulphate resisting cement
Three basic raw materials which are needed in large quantities for production of steel are_______________?
(A) iron ore, coal and sulphur
(B) iron ore, carbon and sulphur
(C) iron ore, coal and lime stone
(D) iron ore, carbon and lime stone