Load applied during the compressive strength test of brick till its failure is at the rate of _______________ kg/cm² per minute.
- 100
- 120
- 140
- 160
Statement 1 : Characteristic strength of concrete is normally defined as the strength that is likely to be exceeded 95% of the times.
Statement 2 : If instead of allowing 5% of samples to fall below the characteristic strength, 10% of the samples are allowed to fall below the characteristic strength, the design strength (of the mix) will be higher.
- Both statements are True
- Both statements are False
- Statement 1 is True and Statement 2 is False
- Statement 1 is False and Statement 2 is True
Which of the statements are true about Foam Glass?
(i) It is extensively used in air-conditioning units
(ii) It is termite proof
- Only (i)
- Only (ii)
- Both (i) and (ii)
- Neither (i) nor (ii)
As per IS Method of Determination of Fineness of Hydraulic Cement by Dry Sieving, fineness is represented by the mass of residue left on a standard IS sieve of size
- 50 µm
- 90 µm
- 150 µm
- 190 µm
Which material is not considered as innovative building material in current scenario ?
- Fly ash bricks
- Translucent cement
- Hydro ceramic
- Cigarette butt bricks
________________ enables the brick to retain its shape
- Silica
- Alumina
- Iron
- Magnesia
Number of bricks required for one cubic meter of masonry are
- 400
- 450
- 500
- 550
Seasoning of timber is required to
- soften the timber
- harden the timber
- straighten the timber
- remove sap from the timber
The minimum compressive strength (MPa) of 53 grade Ordinary Portland Cement after 72 hours should not be less than
- 10
- 15.69
- 27
- 53
Shrinkage of concrete depends upon the
1. relative humidity of the atmosphere
2. passage of time
3. applied stress
Which of these statements is/are correct?
- 1 and 2
- 2 and 3
- 1 alone
- 1, 2 and 3
Which of the following stone is recommended for road metal work ?
- sandstone
- quartzite
- slate
- marble
The lime which sets on absorbing CO2 from atmosphere is
- lean lime
- feebly hydraulic lime
- rich lime
- fat lime
Note :-
This Question is cancelled in Final Answer Key.
Choose the correct statement(s) related to asphalt from the following
i. Viscosity of the asphalt decreases with increase in temperature
ii. Asphalts are composed of benzene rings.
iii. Asphalts are obtained from the destructive distillation of coal
iv. Asphalts react with water, forming hydration products which provides strength to the pavements
- Only (i)
- (i) and (ii)
- (ii) and (iii)
- (i), (ii), (iii) and (iv)
A rectangular specimen is normally used for carrying out specific gravity test on timber. Dimensions of the specimen is taken as
- 5 cm × 5 cm × 15 cm
- 2 cm × 2 cm × 10 cm
- Both (A) and (B)
- Neither (A) nor (B)
________________ are stones, concrete, brick etc. placed on top of parapet walls to prevent seepage of water into the walls.
- Copings
- Corbels
- Jambs
- Throating
As per IS code specifications for methods of sampling and analysis of concrete, the minimum volume of the composite sample of the fresh concrete, truly representing the batch, to be collected from the field for investigation is
- 0.005 m³
- 0.010 m³
- 0.015 m³
- 0.020 m³
Which one of the following statements regarding the cement fineness is NOT correct?
- Fine cement is more liable to suffer from shrinkage cracking than coarse cement.
- Fine cement will show a faster rate of hardening than coarse cement.
- Fine cement shows a faster rate of heat evolution and the total quantity of heat evolved is much larger than coarse cement.
- Fine cement shows the same setting time as coarse cement.
The specific gravity of most of the stones lies between
- 2.3 and 2.5
- 2 and 2.3
- 1.75 and 2
- 2.75 and 3.25
Note :-
This Question is cancelled in Final Answer Key.
Which of the following heat treatment methods for steel is carried out to refine the grain structure resulting from rolling, forging and other manufacturing processes?
- Hardening
- Tempering
- Annealing
- Normalizing
The lime which has the property of setting in water is known as
- fat lime
- hydraulic lime
- hydrated lime
- quick lime
