More than 100 percent of __________ is present in oleum.
SO3
H2SO4
H2SO3
SO2
Correct Answer :
B. H2SO4
Related Questions
Hydrocyanic acid (HCN) is used as an insecticide for
Controlling timber degradation by ants
Controlling poultry lice
Potato beetle
Citrus fruits
In an integrated steel plant, NH3 present in coke oven gas is normally recovered as
(NH4)2SO4
NH4Cl
(NH4)2 NO3
Liquid NH3
Yellow phosphorus is transported under
Air
Water
Nitrogen
Helium
Plaster of Paris is
CaSO4. ½H2O
Used for setting of broken bones
Both (A) and (B)
Same as gypsum
Flexible foam (for mattresses) is usually made of
PVC
Silicone
Polyurethanes
Polyamides
Which of the following is a disaccharide?
Sucrose
Glucose
Starch
Maltose
Carborundum consists mainly of
Bauxite
Silicon carbide
Boron carbide
Calcium carbide
'Hollander beater' machine used in the paper manufacturing plant does not accomplish the task of
Final rolling out of paper
Cutting of fibres
Hydration of fibres
Fibrillation of fibre
Liquefaction of gases cannot be done by
Exchange of heat with colder stream
Adiabatic expansion through a throttle valve (Joule-Thomson expansion)
Merely compressing it beyond critical pressure
Adiabatic expansion against a piston or in a turbine
Hydrogenation of oil takes place in a/an __________ reactor.
Autothermal
Trickle bed
Plug flow
None of these
Fish contains about __________ percent oil.
5
10
20
35
Varnish does not contain
Thinner
Pigment
Both (A) & (B)
Neither (A) nor (B)
Starting raw material for the manufacture of alum is
Alumina
Gypsum
Bauxite
Ammonium bicarbonate
Haemoglobin is a/an
Amino acid
Biological catalyst
Protein
Enzyme
Shaving soaps are
Soft potassium soaps (potassium salt of fatty acid) with free Stearic acid to give lather a lasting property
Metallic soaps compounded with frothing agents
High free alkali soaps having excess of cane sugar and alcohol
None of these
The enzyme which converts starch into the disaccharides maltose is
Diastase
Maltase
Yeast
None of these
Conversion of SO2 to SO3 in Monsanto 4-pass converter is about __________ percent.
80
90
98
100
Glass is
Mainly CaO
Subjected to galvanising
A super cooled liquid
All (A), (B) and (C)
Alcohol is produced by the
Oxidation of an aldehyde
Hydrolysis of an ether
Esterification of a fat
None of these
Which is the most efficient absorbent for SO3 out of the following?
20% oleum
65% oleum
78% H2SO4
98% H2SO4
Which of the following is used as a coagulant in treating turbid water?
Chlorine
Ferric sulphate
Calcium sulphate
Activated carbon
Chloramines are used in water treatment for
Disinfection and control of taste & odour
Corrosion control
Removing turbidity
Control of bacteria
The process involved in converting rubber into a thin sheet or coating it on fabric is called
Extrusion
Mastication
Calendaring
Vulcanisation
Na2CO3.10H2O is called
Washing soda
Soda ash
Slaked lime
Quicklime
Sulphur addition in soap is done to
Improve the soap texture
Cure pimples & dandruff
Fasten lather formation
Increase its cleansing action
Ore concentration by froth floatation utilises the __________ of ore particles.
Density difference
Wetting characteristics
Terminal velocities
None of these
Pick out the wrong statement.
Conversion of SO2 to SO3 in Monsanto-4 pass converter is about 98%
The chemical formula of oleum is H2S2O7, which is formed by saturating sulphuric acid with sulphur trioxide
Vitriol oil is nothing but technical sulphuric acid
Decomposition of sulphuric acid on heating does not start before its boiling
The yield of tar from high temperature carbonisation of dry coal is about __________ percent.
3
12
22
0.3
Separation of fresh water from sea water can be done by the __________ operation.
Osmosis
Reverse osmosis
Absorption
Adsorption
Electro deposition of metals i.e. electroplating is never done on
Metals
Alloys
Refractories
Non-metals