Rotary kiln is not involved in the production of
Cement
Lime from limestone
Slaked lime from quick lime
None of these
Correct Answer :
C. Slaked lime from quick lime
Related Questions
Which of the following impurities in feed water for high pressure boiler is the most detrimental?
Silica
Dissolved oxygen
Suspended salt
Dissolved salt
Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of
Collagen
Tannin
Molasses
Carbohydrate
Cooking liquor in case of sulphite process is
Sodium sulphite and sodium bisulphite
Magnesium sulphite and free SO2 in acid medium
Magnesium sulphate and magnesium bicarbonate
None of these
Which allotrope of sulphur is insoluble in carbon disulphide?
Rhombic sulphur
Monoclinic sulphur
Plastic sulphur
Milk of sulphur
The main component of Pyrex glass is
Zinc
Lead
Boron
Selenium
Hydrogenation of oil does not
Remove double bonds
Raise its melting point
Improve its resistance to oxidation
None of these
In industrial nomenclature, alcohol means
Butyl alcohol
Propyl alcohol
Ethanol
Methyl alcohol
Bleaching of paper pulp is done with
Activated clay
Bromine
Chlorine or chlorine dioxide
Magnesium sulphite
The catalyst used in shift converter is
Nickel
Vanadium
Silica gel
Alumina
Which of the following coals has the highest calorific value?
Lignite
Sub-bituminous
Anthracite
Peat
A cane sugar factory having sugar production rate of 10 tons/day will produce about __________ tons/day of bagasse (after consumption by the factory for heating etc.).
1
10
25
40
Fusion of bauxite and __________ produces high alumina cement.
Alum
Limestone
Coke
Quartz
Adipic acid is an intermediate in the manufacture of
Perspex
Nylon-66
Polystyrene
Bakelite
Carborundum consists mainly of
Bauxite
Silicon carbide
Boron carbide
Calcium carbide
Magnesium and calcium __________ cause temporary hardness of water.
Carbonates
Bicarbonates
Phosphates
Sulphates
Deaeration of water in its treatment is necessary, as it
Minimises its turbidity
Helps in controlling its taste and odour
Minimises its corrosiveness
None of these
L.D. converter is used in the production of
Pig iron
Steel
Copper
Zinc
Phenolic antiseptics are added in the __________ soap.
Shaving
Medicated
Metallic
Transparent
Hollander beater used during paper pulp manufacture does not facilitate the __________ of fibre.
Cutting
Fibrillation
Hydration
Strengthening
Producer gas consists mainly of
CO, CO2 N2, H2
CO, H2
H2, CH4
C2H2, CO2, H2
Consider the production of ammonia from methene and air as raw materials. The catalysts used are:
(i) __________ for steam reforming of methane and
(ii) __________ for ammonia synthesis.
(i) - Ni/Al2O3; (ii) - Cu - ZnO/Al2O3
(i) - Fe/Al2O3; (ii) - Cu - ZnO/Al2O3
(i) - Ni/Al2O3; (ii) - Fe/Al2O3
(i) - Fe/Al2O3; (ii) - Ni/Al2O3
Free alkali in a toilet soap is __________ that in a laundry shop.
Less than
More than
Same
None of these
Use of hydrated lime in water treatment
Before filtration, reduces the bacterial load on filters
After filtration, combats the corrosiveness of water due to the presence of O2 & CO2
Is to adjust the pH value
All (A), (B) and (C)
Percentage of glycerine present in the spent lye obtained during soap manufacture is about
0.5
5
20
35
Starting material for the production of styrene butadiene rubber (SBR) is
Ethyl alcohol
Ethylene
Both (A) & (B)
Neither (A) nor (B)
Systemic insecticides
Are absorbed throughout the plant
Kill insects following external bodily contact
Are stomach poisons
Emit poisonous vapour
Potassium is kept & transported under
Water
Liquid ammonia
Kerosene oil
Alcohol
Catalytic oxidation of naphthalene produces
Styrene
Phenol
Phthalic anhydride
None of these
Ethanol amine is produced using ammonia and
Ethyl benzene
Ethylene oxide
Ethanol
Ethane
Which of the following is the most adverse factor challenging the choice of mercury electrolytic cell process for the production of caustic soda?
High cost of mercury
High specific gravity of mercury
Non-availability of high purity mercury
Pollution of water stream by mercury