61. The machine used for manufacturing the Mud blocks is known as
- BWSM
- SMB
- SMC
- MARDINI
62. The brick piece obtained by cutting a triangular portion of the brick such that half a headers and half a stretcher are obtained on adjoining cut faces is called as
- Queen closer
- Mitred closer
- King closer
- Three-quarter bat
63. AS per IS: 3495 (part I), what is the loading rate used to find the compressive strength of bricks?
- 14 N/m2 per minute
- 40 N/m2 per minute
- 45 N/m2 per minute
- 4 N/m2 per minute
64. A bull nose brick is not used for
- Rounding off sharp corners
- Pillars
- Decoration purpose
- Arches
65. The indentation provide in a face of the brick is called
- strike
- frog
- pallet
- none of three mentioned here
66. Water absorption test for bricks done as per
- IS 2180
- IS 3495
- IS 2222
- IS 5779
67. The standard size of brick is
- 20cm × 10cm × 10cm
- 19cm × 9cm × 9cm
- 18cm × 9cm × 9cm
- 18cm × 10cm × 10cm
68. A first class brick should have a minimum crushing strength of
- 7 MN/m2
- 10.5 MN/m2
- 12.5 MN/m2
- 14 MN/m2
69. The burning of bricks in kilns is taken how much time to complete the burn?
- 24 hrs.
- 12 hrs.
- 96 hrs.
- 48 hrs.
70. The average out-turn of first class bricks in kiln burning is
- 60 to 70%
- 50 to 60%
- 80 to 90%
- 70 to 80%