i. sedimentary rock
ii. aqueous rock
iii. silicious rock
The correct answer is:
A. only (i)
B. both (i) and (ii)
C. both (i) and (iii)
D. all (i), (ii) and (iii)
Related Mcqs:
- Which of the following is a rock ?
A. quartz
B. mica
C. gypsum
D. none of the above - A good building stone should not absorb water more than_____________?
A. 5%
B. 10%
C. 15%
D. 20% - The preparation of surface of stone to obtain plain edges or to obtain stones of required size and shape is known as______________?
A. quarrying of stones
B. blasting of stones
C. seasoning of stones
D. dressing of stones - Plywood is made by bonding together thin layers of wood in such a way that the angle between grains of any layer to grains of adjacent layers is_________________?
A. 0°
B. 30°
C. 45°
D. 90° - Which of the following bricks are used for lining of furnaces ?
A. overburnt bricks
B. underburnt bricks
C. refractory bricks
D. first class bricks - The main constituent of cement which is responsible for initial setting of cement is_________________?
A. dicalcium silicate
B. tricalcium silicate
C. tricalcium aluminate
D. all of the above - The most common admixture which is used to accelerate the initial set of concrete is______________?
A. gypsum
B. calcium chloride
C. calcium carbonate
D. none of the above - A mortar joint in masonry which is normal to the face of wall is known as_________________?
A. bed joint
B. wall joint
C. cross joint
D. bonded joint - In any good staircase, the maximum and minimum pitch respectively should be_____________?
A. 90° and 0°
B. 75° and 30°
C. 60° and 10°
D. 40° and 25° - Proper amount of entrained air in concrete results in__________?
1. better workability
2. better resistance to freezing and thawing
3. lesser workability
4. less resistance to freezing and thawing The correct answer is:A. (1) and (2)
B. (1)and(4)
C. ((2)and (3)
D. (3)and (4)
