Related Questions

Given that, 24 carat gold is pure gold, 18 carat gold is 3/4th of pure gold and 20 carat gold is 5/6th of pure gold, the ratio of the pure gold in 18 carat gold to the pure gold in 20 carat gold is -
A 5 : 8
B 10 : 9
C 8 : 5
D 9 : 10
Bomb calorimeter is used to determine the (where, GCV - Gross Calorific Value. NCV - Net Calorific Value.)
A GCV at constant pressure
B GCV at constant volume
C NCV at constant pressure
D NCV at constant volume
Gross calorific value will be equal to the net calorific value for
A H2
B C2H2
C CO
D C2H6
Gross and net calorific value of a fuel will be the same
A If its ash content is zero
B Ifits carbon content is very low
C If its hydrogen/hydrogen compound content is zero
D Under no circumstances
At XYZ Company, the ratio of sales to gross profit is 4:3 and the ratio of gross profit to net profit is 3:1, what is the ratio of net profits to sales?
A 1:4
B 4:1
C 2:1
D 1:2
At XYZ Company, the ratio sales to gross profit is 4:3 and the ratio of gross profit to net profit is 3:1, what is the ratio of net profits to sales?
A 1:4
B 4:1
C 2:1
D 1:2
Maruf's net income is always 80 percent of his gross income. What will be increase in Maruf's net income when his gross income increases from Tk. 20,000 to Tk. 30,000?
A 5,000
B 6,000
C 8,000
D none of these
Carbon monoxide has ________ greater affinity for haemoglobin as compared to oxygen.
A 1000 times
B 210 times
C 20 times
D 2 times
Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about __________ °C.
A 400-500
B 900-1000
C 1400-1500
D 1700-1800
Out of the following fuels, the difference between the net and gross calorific value is maximum in case of
A Pitch
B Fuel oil
C Blast furnace gas
D Bituminous coal

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