Lubricating greases are a mixture of
Mineral oil, soap and additives
Mineral oil and metallic soap
Mineral oil and fatty oil
Fatty oil and metallic soap
Correct Answer :
A. Mineral oil, soap and additives
Related Questions
Presence of H2S in raw water (to be chlorinated) results in the
Reduced softening capacity of zeolite
Increased dosage of chlorine to provide a disinfecting residual in the water
Easy removal of its hardness
None of these
Hydrolysis of sugar is called
Hydration
Inversion
Esterification
None of these
Bakelite is
Same as Polytetrafluoroethylene (PTFE)
An inorganic polymer
Same as thermosetting phenol-formaldehyde
Not a polymer
Sulphuric acid is mainly used in the __________ industry.
Fertiliser
Steel
Paper
Paint
Which of the following is not a raw material used for the manufacture of ordinary glass?
Iron oxide
Soda ash
Limestone
Silica
The major constituent of black liquor generated during paper manufacture is sodium
Sulphate
Carbonate
Hydroxide
Bi-carbonate
Air used in aerobic fermentation must be sterilized, otherwise the
Recovery of product will be difficult
Contamination of pure culture would result
Uniformity of product cannot be achieved
None of these
Concentration of hydrogen peroxide is done by
Crystallisation
Vacuum crystallisation
Atmospheric distillation
Dehydration
Which of the following is an additional step in the manufacture of paper from bagasse as compared to that from bamboo?
Depithing
Digestion
Bleaching
None of these
Main product in calcium carbide-water reaction is
Ca(OH)2
C2H2
CO2
CaCO3
__________ Nature of hypo (sodium thiosulphate) makes it useful in photography.
Oxidising
Reducing
Complex forming
Photochemical
Polycaprolactam is commercially known as
Nylon-6
Nylon-66
Dacron
Rayon
Which of the following is a detergent?
Fatty alcohol
Alkyl benzene sulphonate (ABS)
Fatty acids
Methylene chloride
Main use of hydrazine is
As a rocket fuel
In water treatment
As a disinfectant
As fire retardant
DDT should not be allowed to come in contact with iron (during its manufacture) to
Avoid its decomposition
Prevent sulphonation of the monochlorobenzene by the acid catalyst
Achieve non-hygroscopic property
None of these
Commercial production of soda ash by Solvay process requires limestone, __________ as raw materials.
Coke and sand
Brine and coal
Coke and caustic soda
None of these
Ultimate analysis of coal determines its __________ content.
Carbon, hydrogen, nitrogen & sulphur
Carbon, ash, sulphur & nitrogen
Carbon, sulphur, volatile matter & ash
Carbon, volatile matter, ash & moisture
Pick out the wrong statement.
Dry process is used for the manufacture of cement, when the raw material is blast furnace slag
Portland cement is made employing wet process
Gypsum is added to Portland cement to lengthen its setting time
None of these
Which of the following is not required in the manufacture of soda ash by Solvay process?
Ammonia
Limestone
Nitric acid
None of these
Sucrose is a
Monosaccharide
Disaccharide
Polysaccharide
None of these
Fat dispersed in water is exemplified by
Colloids
Gel
Butter
Emulsion
Phosphoric acid is prepared from
Cryolite
Chalcopyrite
Rock phosphate
None of these
Fish contains about __________ percent oil.
5
10
20
35
Catalytic oxidation-dehydrogenation of methyl alcohol produces
Formaldehyde
Phenol
Acetone
Maleic anhydride
Thorium is mainly used
For the manufacture of gas mantles
As a fissile fuel in a nuclear reactor
In the manufacture of hydrogen bomb
In the treatment of cancer
The manufacture of Kraft pulp is done by a/an __________ process.
Alkaline
Acidic
Neutral
None of these
Major component of flint glass is
Lead oxide
Silica
Alumina
Soda
Carboxymethyl cellulose (CMC) is added in detergents to act as a/an
Surfactant
Builder
Optical brightening agent
Anti soil redeposition agent
__________ is produced using molasses as the starting raw material.
Methyl alcohol
Ethyl alcohol
Benzol
Dimethyl ether
Solvay process is used for the manufacture of
Caustic soda
Soda ash
Caustic potash
Soda lime