Percentage of alcohol in beer may be around __________ percent.
2-8
18-23
27-32
1-4
Correct Answer :
A. 2-8
Related Questions
Plaster of Paris is
CaSO4. ½H2O
Used for setting of broken bones
Both (A) and (B)
Same as gypsum
Use of chlorine in the treatment of sewage
Helps in grease separation
Increases the biological oxygen demand (BOD)
Causes bulking of activated sludge
Aids in flocculation
How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical shaft kiln?
500°C
750°C
1000°C
1500°C
Salt is added in the kettle during soap manufacture to separate
Soap from lye
Glycerine from lye
The metallic soap
The unsaponified fat from soap
Dacron is a
Condensation product of Hexamethylene diamine and adipic acid
Thermosetting material
Condensation product of dimethyl terephthalate and ethylene glycol
None of these
Massecuite is
Used for paper making
Used as a cattle feed
Highly acidic in nature
None of these
Riboflavin is a/an
Vitamin
Analgesic drug
Anaesthetics
Anti-malarial drug
Production of one ton of cement requires about __________ tons of limestone.
0.6
1.2
2.2
3.8
Poly Tetrafluoroethylene (P.T.F.E.) is known as
Bakelite
Teflon
Celluloid
Dacron
Nylon-6 is manufactured from
Caprolactam
Hexamethylene diamine and adipic acid
Hexamethylene diamine and Maleic anhydride
Hexamethylene diamine and Sebacic acid
Wet chlorine gas produced during electrolysis of brine is dehydrated by
Spraying 66° Be H2SO4 counter current to the flow of the gas
Passing it through a bed of diatomaceous earth
Passing it through a bed of silica gel
None of these
The amount of benzene present in pure Benzol is about __________ percent.
30
50
70
90
Frasch process is for
Making oxygen
Producing helium
Mining sulphur
Making nitrogen
__________ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia.
Solvay
Ostwald's
Haber's
None of these
Hydrazine is used in water treatment for the removal of
Colloidal impurities
Dissolved oxygen
Turbidity
Chlorinous taste
Temporary hardness of water can be removed by
Addition of alum (a coagulant)
Boiling
Filtration (through gravity sand filter)
Addition of lime
Average sulphur content in Indian pyrites is about __________ percent.
15
35
55
70
Saponification number of an oil or fat
Gives an idea about its molecular weight
Is inversely proportional to its molecular weight
Detects its adulteration
All (A), (B) & (C)
Percentage of glycerine present in the spent lye obtained during soap manufacture is about
0.5
5
20
35
20% oleum means that in 100 kg oleum, there are 20 kg of
SO3 and 80kg of H2SO4
H2SO4 and 80kg of SO3
SO3 for each 100 kg of H2SO4
None of these
Flash point of most vegetable oils is about __________ °C.
50
100
200
300
Nitric acid is not used in the manufacture of
Detergents
Fertilisers
Aqua regia
Explosives
Maleic anhydride is produced by catalytic oxidation of
Toluene
Ethyl alcohol
Naphthalene
Benzene
Main constituents of natural rubber is
Polystyrene
Polyisoprene
Polybutadiene
Polychlorophrene
Zeolite is a/an
Naturally occuring clay which is capable of exchanging cations
Abrasive material
Catalyst used in shift conversion
None of these
Vulcanisation of rubber
Decreases its tensile strength
Increases its ozone & oxygen reactivity
Increases its oil & solvent resistance
Converts its plasticity into elasticity
Concentration of NaOH solution produced by mercury electrolytic cell is about __________ percent.
10
25
50
98
__________ iron is the purest form of iron.
Cast
Wrought
Pig
High silicon
Chloramines are used in water treatment for
Disinfection and control of taste & odour
Corrosion control
Removing turbidity
Control of bacteria
CaSO4 . ½H2O is known as
Blue vitriol
Plaster of Paris
Gypsum
Zeolite