Related Questions

The price of raw meterials had gone up by 15% labor cost has also increased from 25% of the cost of ras material to 30% of the cost of raw material. By how much percentage should there be reduction in the usage of raw materials so as to keep the cost same?
A 28%
B 17%
C 27%
D 24%
The inventory of raw materials included in the working capital is usually about __________ months supply of raw materials valued at delivery prices.
A One
B Three
C Six
D Twelve
Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of portland cement. The component of Portland cement which first hardens is
A 5CaO . 3Al2O3
B 3CaO . Al2O3
C 3CaO . SiO2
D 2CaO . SiO2
When Mr. Sen imports some raw materials he has to pay 7% import duty on the portion of the total value of the item in excess of TK. 1000. If the amount of import duty he paid was TK. 87.50 then what was the value of the raw material that he imported ?
A TK. 1,250
B TK.2,250
C TK. 2,500
D TK. 2,750
For testing compressive and tensile strength of cement, the cement mortar is made by mixing cement and standard sand in the proportions of
A 1 : 2
B 1 : 3
C 1 : 4
D 1 : 6
For the manufacture of Portland cement, the proportions of raw materials used, are
A Lime 63% ; silica 22% ; other ingredients 15%
B Lime 22% ; silica 63% ; other ingredients 15%
C Silica 40% ; lime 40% ; other ingredients 20%
D Silica 70% ; lime 20% ; other ingredients 10%
Raw materials used for producing __________ cement does not contain iron oxide.
A Waterproof
B Slag
C White
D Pozzolan
Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about __________ percent.
A 75
B > 30
C 50
Raw materials required for the manufacture of __________ is acetylene and hydrochloric acid.
A Phthalic anhydride
B Vinyl chloride
C Maleic anhydride
D Dacron
Limestone is a raw material used by which industry?
A Aluminium
B Fertilizers
C Cement
D Petrochemicals

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