Related Questions

Catalyst used in the oxidation of benzene to produce maleic anhydride is
A V2O5
B Pt
C Ni
D Cr
Maleic anhydride is produced by catalytic oxidation of
A Toluene
B Ethyl alcohol
C Naphthalene
D Benzene
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%
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
Starting raw material for the manufacture of alum is
A Alumina
B Gypsum
C Bauxite
D Ammonium bicarbonate
Manufacture of phthalic anhydride uses __________ as a catalyst.
A Ni
B Cr
C V2O5
D Al2O3
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
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
In the manufacture of viscose rayon, the raw material used industrially is
A Recalyptious wood
B Bamboo
C Bagasse
D Fine teak wood
Pure bauxite is the best raw material for the manufacture of high alumina refractories, in which maximum alumina content can be as high as __________ percent.
A 55
B 70
C 80
D 90

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