Building Materials Mcqs
The practical limit of moisture content achieved in air drying of timber is
A) 5 %
B) 15 %
C) 25 %
D) 35 %
Check Answer
B) 15 %
Addition of pozzolana to ordinary Portland cement increases
A) Bleeding
B) Shrinkage
C) Permeability
D) Heat of hydration
Check Answer
B) Shrinkage
Pug mill is used for
A) Preparation of clay
B) Moulding of clay
C) Drying of bricks
D) Burning of bricks
Check Answer
A) Preparation of clay
Wrought iron contains carbon upto
A) 0.25 %
B) 1.0 %
C) 1.5 %
D) 2.0 %
Check Answer
A) 0.25 %
The minimum compressive strength of 1st class bricks should be
A) 75 kg/cm2
B) 90 kg/cm2
C) 100 kg/cm2
D) 120 kg/cm2
Check Answer
C) 100 kg/cm2
The commonly used lime in white washing, is
A) White lime
B) Fat lime
C) Hydraulic lime
D) Quick lime
Check Answer
B) Fat lime
A 1st class brick immersed in water for 24 hours, should not absorb water (by weight) more than
A) 10 %
B) 15 %
C) 20 %
D) 25 %
Check Answer
C) 20 %
The process of mixing clay, water and other ingredients to make brick is known as
A) Kneading
B) Moulding
C) Pugging
D) Drying
Check Answer
A) Kneading
Minimum required water cement ratio for a workable concrete, is
A) 0.30
B) 0.40
C) 0.50
D) 0.60
Check Answer
B) 0.40
Mastic asphalt is normally used for
A) Sound insulation
B) Water proofing
C) Fire proofing
D) None to these
Check Answer
B) Water proofing
