41. The good clay for making bricks is
- Unweathered clay
- Weathered clay
- Silted clay
- Black cotton soil
42. Frog is defined as a
- Depression on the top face of brick
- Top most course of plinth
- Brick whose one end is cut splayed or mitered for the full width
- Brick used for the corner of a wall
43. Efflorescence in the bricks is caused due to
- Organic matter
- Alkalies
- Lime
- Iron
44. Jhama bricks are
- Well burnt having smooth and even surface
- Slightly over burnt having rough surface
- Under burnt and can be easily broken
- Over burnt with irregular shape
45. Which one of the correct sequence of various operations of preparation of Brick Earth
- Blending
- Digging
- Weathring
- Unsoiling
- Tempering
- iv, ii, iii, v, i
- iv, ii, iii, i, v
- ii, iv, v, iii, i
- ii, iii, iv, v, i
46. Which component has highest percentage in good brick earth?
- Alumina
- Lime
- Silica
- Oxide of iron
47. The strength of Class-II bricks used in construction shall not be less than
- 75 kg/cm2
- 50 kg/cm2
- 20 kg/cm2
- 35 kg/cm2
48. Vitrified tiles and ceramic tiles testing is done in accordance to
- IS 15622-2006
- IS 1077-1992
- IS 456-1978
- IS 1237-1859
49. The brick in which the corner is cut so as to get half header and half stretcher is called
- King closer
- Queen closer
- Half bat
- 3/4th bat
50. Hypidiomorphic texture may be seen in
- Granite
- Pegmatite
- Basalt
- Dolerite