Related Questions

Dry mix hydraulic compositions of refractory aggregates with suitable bonding materials are called refractory
A Mortars
B Cements
C Castables
D None of these
If a refractory contains high content of silicon, it means refractory is
A Acidic
B Basic
C Neutral
D Brittle
An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks during its manufacture?
A Cork
B Saw dust
C Sand
D Chemically prepared foam
Maximum alumina content in high alumina refractory can be as high as __________ percent.
A 30
B 50
C 70
D 90
Thermal diffusivity of a refractory brick is high, when its __________ is high.
A Density
B Specific heat
C Thermal conductivity
D None of these
Coffee A costs 75 cents per pound. It is mixed with Coffee B, which normally costs 80 cents per pound, to form a mixture that costs 78 cents per pound. If there are 10 pounds of the mix, how many pounds of Coffee A were used in the mix?
A 3
B 4
C 4.5
D 5
In the Excel Manufacturing Company, 46 percent of the employees are men. If 60 percent of the employees are unionized and 70 percent of these are men, what percent of the non-unionized workers are women?
A 90%
B 87.5%
C 66.7%
D 50%
In a class of 200 students , 40 percent are girls . 25 percent of the boys and 10 percent of the girls signed up for a tour to Cox's bazar . What percent of the class signed up for the tour?
A 19%
B 23%
C 25%
D 27%
If 75 percent of a class answered the first question on a certain test correctly, 55 percent answered the second question on the test correctly, and 20 percent answered neither of the questions correctly, what percent answered both correctly?
A 10%
B 20%
C 30%
D 50%
In a shipment of 120 machine parts 5 percent , 5 percent were defective , In a shipment of 80 machine parts , 10 percent were defective. For the two shipments combined , what percent of the machine parts were defective ?
A 6.5%
B 7%
C 7.5%
D 8.0%

Next steps