Related Questions

The initial setting time for ordinary Portland cement as per IS specifications should not be less than
A 10 minutes
B 30 minutes
C 60 minutes
D 600 minutes
Which of the following are products and services bought by final consumers for personal consumption? These include convenience products, shopping products, specialty products, and unsought products.
A Material and parts
B Consumer products
C Industrial products
D Capital items
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
Normally, the angle of roof truss with asbestos sheets should not be less than
A $$26{\frac{1}{2}^ \circ }$$
B 30°
C 35°
D 40°
Ordinary Portland Cement এর Initial Setting Time কত?
A ৫ মিনিট
B ১০ মিনিট
C ৩০ মিনিট
D ৫ ঘণ্টা
To retard the initial setting time of cement, the compound responsible, is
A Tri-calcium silicate
B Gypsum
C Di-calcium silicate
D Tri-calcium aluminate
when demand for factory's products is high . more money is spent at the factory for safety precautions and machinery maintenance than when demand is low. thus the average number of on -the-job accidents per employee each month should be lower during perids when demand is high than when demand is low and less money is available for safety precautions and machinery maintenance .when demand for its products is high, casts the most serious doubt on the conclusion drawn above?
A Employees demand for higher wages than they do at other times.
B Authority hires new workers but lacks the time to rain them properly.
C Employees are less likely to lose their jobs than are at other times.
D Authority sponsors a monthly safety award for each division in the factory.
The maximum permissible span of asbestos cement sheets is
A 650 mm
B 810 mm
C 1250 mm
D 1680 mm
The asbestos cement sewers are
A Light in weight
B Not structurally strong to bear large compressive stress
C Susceptible to corrosion by sulphuric acid
D All the above
The asbestos cement pipes are generally laid
A Horizontally
B Vertically
C At an angle of 30°
D At an angle of 60°

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