A. Copper
B. Lead
C. Tin
D. Iron
Chalcopyrite is the main ore of_________________? Read More »
Chemical Process A. Hematite
B. Magnetite
C. Siderite
D. Chalcopyrite
A. Mineral oil, soap and additives
B. Mineral oil and metallic soap
C. Mineral oil and fatty oil
D. Fatty oil and metallic soap
Lubricating greases are a mixture of__________________? Read More »
Chemical Process A. Coke oven gas
B. Water gas
C. Blast furnace gas
D. L.D. converter gas
Which of the following fuel gases contains maximum amount of carbon monoxide ? Read More »
Chemical Process A. Chamber
B. Chance
C. Tromp
D. Solvay
____________________ process is used for producing soda ash? Read More »
Chemical Process A. Lignin
B. Cellulose
C. Starch
D. Gelatine
Main constituents of cotton fiber is__________________? Read More »
Chemical Process A. Light & heavy leather respectively
B. Heavy & light leather respectively
C. Both light & heavy leather
D. Neither light nor heavy leather
Chrome tanning and vegetable tanning are done for ________________? Read More »
Chemical Process A. Called ester value
B. Always negative
C. Constant for all fatty oils
D. None of these
The difference between saponification value and acid value is____________________? Read More »
Chemical Process A. NH3
B. NaCl
C. CaO
D. Coke
A. AgO
B. Al2O3
C. ZnCl2
D. Fe2O3
Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene ? Read More »
Chemical Process