Rosin soap is added during paper manufacture to
Impart adhesive properties
Improve opacity
Impart resistance to penetration by liquids
None of these
Correct Answer :
C. Impart resistance to penetration by liquids
Related Questions
Catalytic oxidation of naphthalene produces
Styrene
Phenol
Phthalic anhydride
None of these
Pick out the false statement pertaining to water treatment.
Aeration of water is effective in CO2 removal
The zeolite water softening process reduces the hardness of water by not more than 50%
Sodium sulphate or sodium carbonate do not cause hardness in water
Water with pH value less than 7, is acidic
Most commonly used rubber vulcanising agent is
Sulphur
Bromine
Platinum
Alumina
Pick out the wrong statement pertaining to the soap manufacture.
Transparent soaps are made by cold process
Organic pigments are used as colouring materials in the soap manufacture
Both laundry as well as toilet soaps are manufactured by hot process
Colourless rosin is used in the manufacture of laundry soaps
Nylon-6 is a
Polyamide
Thermosetting resin
Polyester
None of these
Coal tar is used as a
Binding material for coal briquettes
Fuel in rotary kiln
Binder in making carbon electrodes
All (A), (B) and (C)
Synthesis gas is a mixture of
CO and H2
N2 and H2
H2, CH4 and CO
CO2 and H2
Salt cake is chemically represented by
Na2SO4
CaSO4. ½H2O
MgSO4
BaSO4
The main product of high temperature carbonisation of coal is
Coke
Ammonia
Tar
Phenol
In the manufacture of viscose rayon, the raw material used industrially is
Eucalyptus wood
Bamboo
Bagasse
Fine teak wood
Poly Vinyl Chloride (P.V.C.) is a __________ material.
Thermosetting
Thermoplastic
Fibrous
Chemically active
Purity of oxygen used for blowing in steel making L.D. converter is 99.5%. The boiling point of oxygen is about __________ °C.
-53
-103
-183
-196
Which of the following is an unsaturated fatty acid?
Lauric acid
Palmitic acid
Stearic acid
Oleic acid
A unit operation is exemplified by the process of
Reduction
Desorption
Nitration
Combustion
Ethanol amine is produced using ammonia and
Ethyl benzene
Ethylene oxide
Ethanol
Ethane
The product obtained on mixing calcium oxide with water is called
Quicklime
Slaked lime
Milk of lime
None of these
Na2CO3.10H2O is called
Washing soda
Soda ash
Slaked lime
Quicklime
Margarine is a/an
Fat
Explosive
Plasticiser
Rocket propellant
Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of
Carbon
Arsenic
Lead
Sulphur
__________ are added in lacquers to remove film brittleness and to improve adhereness.
Film forming materials
Plasticisers
Diluents
Solvents
Haemoglobin is a/an
Amino acid
Biological catalyst
Protein
Enzyme
Epoxy resin
Is a good adhesive
Is an elastomer
Cannot be used for surface coatings
Is a polyester
Dehydrogenation of Isopropanol produces
Propyl alcohol
Acetone
Trichloroethylene
Formaldehyde
Hydrogenation of edible vegetable oils
Is an exothermic reaction
Increases their melting point
Is done in presence of nickel catalyst
All (A), (B) and (C)
__________ process is used for producing soda ash.
Chamber
Chance
Tromp
Solvay
Varnish does not contain
Thinner
Pigment
Both (A) & (B)
Neither (A) nor (B)
Presence of sodium tripolyphosphate (an additive) in synthetic detergent
Facilitates its use even in hard water (by sequestering the water-hardening Ca & Mg ions)
Inhibits its corrosive effects
Does not allow redeposition of dirt on the cleaned surface
None of these
'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
Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C.
-5 to 0
5 to 10
30 to 50
75 to 80
Calcination of gypsum produces
Plaster of Paris
Salt cake
Nitre cake
Lime