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