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.Management Sciences
Category: Chemical Process
Blue colour is imparted to glass by the addition of__________________?
A. FeSO4
B. PbO
C. CaO
D. NaOH
Pick out the correct statement ?
A. A fat is converted into oil by its hydrogenation
B. There is no difference between a fat and an oil so far as its physical properties are concerned
C. All vegetable oils except coconut oil, contains fatty acids having more than sixteen carbon
atoms
D. Vegetable oils are classified as drying, non-drying and semi drying oils depending upon their
fatty acids content
Percentage of uranium in Carnotite ore found in Jadugoda (Jharkhand) is about ___________________?
A. 0.1 to 0.5
B. 1 to 5
C. 5 to 10
D. 15 to 25
Fermentator temperature during production of alcohol from molasses is around ______________ °C?
A. 5
B. 30
C. 130
D. 300
The main product of high temperature carbonisation of coal is_____________________?
A. Coke
B. Ammonia
C. Tar
D. Phenol
Which of the following is not a raw material used for the manufacture of ordinary glass ?
A. Iron oxide
B. Soda ash
C. Limestone
D. Silica
Which of the following is the most adverse factor challenging the choice of mercury electrolytic cell process for the production of caustic soda ?
A. High cost of mercury
B. High specific gravity of mercury
C. Non-availability of high purity mercury
D. Pollution of water stream by mercury
Which of the following is a co-product during the manufacture of caustic soda by electrolysis of brine ?
A. Na2CO3
B. NaHCO3
C. H2
D. None of these
___________________ glass is used for the manufacture of optical glass ?
A. Pyrex
B. Soda
C. Flint
D. Crooke’s
Coal tar is used as a___________________?
A. Binding material for coal briquettes
B. Fuel in rotary kiln
C. Binder in making carbon electrodes
D. All A , B. and C.
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