Lubricating greases are a mixture of (A) Mineral oil, soap and additives (B) Mineral oil and metallic soap (C) Mineral oil and fatty oil (D) Fatty oil and metallic soap

Lubricating greases are a mixture of
(A) Mineral oil, soap and additives
(B) Mineral oil and metallic soap
(C) Mineral oil and fatty oil
(D) Fatty oil and metallic soap
by

1 Answer

Answer :

(A) Mineral oil, soap and additives
by

Related questions

Sodium salt of higher molecular weight fatty acid is termed as the __________ soap. (A) Hard(B) Soft(C) Metallic(D) Lubricating

Description : Sodium salt of higher molecular weight fatty acid is termed as the __________ soap. (A) Hard (B) Soft (C) Metallic (D) Lubricating

Last Answer : (B) Soft

Tall oil obtained as a by-product from the black liquor recovery is (A) A black, sticky & viscous liquid (B) Used in the manufacture of greases, emulsions & soaps (C) Composed mainly of rosin & fatty acids (D) All (A), (B) & (C)

Description : Tall oil obtained as a by-product from the black liquor recovery is (A) A black, sticky & viscous liquid (B) Used in the manufacture of greases, emulsions & soaps (C) Composed mainly of rosin & fatty acids (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

State the use of oil additives used in lubricating oil

Description : State the use of oil additives used in lubricating oil

Last Answer : These are the chemical substances which are added to the lubricating oil either to reinforce some of its natural properties or to provide it with certain new properties which it does not possess ... sulphides or phenols with metals like tin, zinc 6) Anti-foaming additives: - polyorganosiloxanes.

Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used (A) As a lubrican(B) As a rust preventive(C) In hard water for cleaning of cloth(D) As a foam depressant in distillation column

Description : Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used (A) As a lubrican (B) As a rust preventive (C) In hard water for cleaning of cloth (D) As a foam depressant in distillation column

Last Answer : (A) As a lubricant

Metallic soap is __________ salt of fatty acids. (A) Sodium (B) Potassium (C) Both sodium & potassium (D) Aluminium or calcium

Description : Metallic soap is __________ salt of fatty acids. (A) Sodium (B) Potassium (C) Both sodium & potassium (D) Aluminium or calcium

Last Answer : (D) Aluminium or calcium

Which of the following is a metallic salt of a fatty acid? Is it: w) soap x) plastic y) rubber z) petroleum

Description : Which of the following is a metallic salt of a fatty acid? Is it: w) soap x) plastic y) rubber z) petroleum

Last Answer : ANSWER: A -- SOAP

Transparent soaps (e.g. Pears) are (A) Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency (B) Metallic soaps with frothing agent and free Stearic acid to achieve transparency (C) Metallic soaps with frothing agent from which glycerine has not been recovered (D) None of these

Description : Transparent soaps (e.g. Pears) are (A) Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency (B) ... (C) Metallic soaps with frothing agent from which glycerine has not been recovered (D) None of these

Last Answer : (A) Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency

Soap is (a) a mixture of salts of fatty acids (b) a salt of glycerol (c) a mixture of ethers (d) a mixture of aromatic ethers

Description : Soap is (a) a mixture of salts of fatty acids (b) a salt of glycerol (c) a mixture of ethers (d) a mixture of aromatic ethers

Last Answer : a mixture of salts of fatty acids

The commodity which accounts for the maximum volume of goods transported by the railways in India is (a) iron and steel (b) coal (c) mineral oil (d) metallic ores (other than iron ore)

Description : The commodity which accounts for the maximum volume of goods transported by the railways in India is (a) iron and steel (b) coal (c) mineral oil (d) metallic ores (other than iron ore)

Last Answer : Ans: (b)

Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its (A) Poor oxidation stability and high gum forming tendency (B) Greater tendency of decomposition at elevated temperature (C) Hydrolysis tendency in presence of water (D) All (A), (B) and (C)

Description : Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its (A) Poor oxidation stability and high gum forming ... at elevated temperature (C) Hydrolysis tendency in presence of water (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Which of the following terms best describes the compound below? CH3(CH2)12CO2H (a) a fatty acid (b) an oil (c) a wax (d) a soap

Description : Which of the following terms best describes the compound below? CH3(CH2)12CO2H (a) a fatty acid (b) an oil (c) a wax (d) a soap

Last Answer : a fatty acid

Oil is a/an (A) Mixture of glycerides (B) Mixture of glycerides of fatty acids (C) Solid at normal temperature (D) Ester of alcohols other than glycerine

Description : Oil is a/an (A) Mixture of glycerides (B) Mixture of glycerides of fatty acids (C) Solid at normal temperature (D) Ester of alcohols other than glycerine

Last Answer : (B) Mixture of glycerides of fatty acids

The liquid used for the washing of coal in an industrial coal washery is a mixture of water and (A) Carbon tetrachloride (B) Sand (40%) (C) Mineral oil of high viscosity & specific gravity (1.6) (D) None of these

Description : The liquid used for the washing of coal in an industrial coal washery is a mixture of water and (A) Carbon tetrachloride (B) Sand (40%) (C) Mineral oil of high viscosity & specific gravity (1.6) (D) None of these

Last Answer : (B) Sand (40%)

An alkali metal salt of Palmitic acid is known as (A) Soap (B) Metallic soap (C) Detergent (D) Alkaloid

Description : An alkali metal salt of Palmitic acid is known as (A) Soap (B) Metallic soap (C) Detergent (D) Alkaloid

Last Answer : (B) Metallic soap

Salt is added in the kettle during soap manufacture to separate (A) Soap from lye (B) Glycerine from lye (C) The metallic soap (D) The unsaponified fat from soap

Description : Salt is added in the kettle during soap manufacture to separate (A) Soap from lye (B) Glycerine from lye (C) The metallic soap (D) The unsaponified fat from soap

Last Answer : (A) Soap from lye

Phenolic antiseptics are added in the __________ soap. (A) Shaving (B) Medicated (C) Metallic (D) Transparent

Description : Phenolic antiseptics are added in the __________ soap. (A) Shaving (B) Medicated (C) Metallic (D) Transparent

Last Answer : (B) Medicated

Aniline point is the (A) Characteristic property of diesel & lubricating oils (B) Measure of aromatic content of oil (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : Aniline point is the (A) Characteristic property of diesel & lubricating oils (B) Measure of aromatic content of oil (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B

Crude oil is subjected to vacuum distillation in the last stage, because (A) High boiling point products like heavy fuel oil & lubricating oils are heat sensitive and may decompose (B) Lighter/low boiling products are prone to thermal decomposition (C) High purity products can be obtained thereby (D) None of these

Description : Crude oil is subjected to vacuum distillation in the last stage, because (A) High boiling point products like heavy fuel oil & lubricating oils are heat sensitive and may decompose (B) Lighter/low ... prone to thermal decomposition (C) High purity products can be obtained thereby (D) None of these

Last Answer : (A) High boiling point products like heavy fuel oil & lubricating oils are heat sensitive and may decompose

Viscosity index of a lubricating oil (A) Is the measure of its flash point (B) Is the measure of variation of viscosity with temperature (C) Should be low (D) None of these

Description : Viscosity index of a lubricating oil (A) Is the measure of its flash point (B) Is the measure of variation of viscosity with temperature (C) Should be low (D) None of these

Last Answer : (B) Is the measure of variation of viscosity with temperature

. Pick out the wrong statement. (A) Multigrade lubricating oils have high viscosity index (B) Paraffinic oil has very high viscosity index (C) Naphthenic oil has very low viscosity index (D) High viscosity index means a large change in viscosity with change in temperature

Description : . Pick out the wrong statement. (A) Multigrade lubricating oils have high viscosity index (B) Paraffinic oil has very high viscosity index (C) Naphthenic oil has very low viscosity index (D) High viscosity index means a large change in viscosity with change in temperature

Last Answer : (D) High viscosity index means a large change in viscosity with change in temperature

Higher viscosity of lubricating oil usually signifies (A) Lower Reid vapour pressure (B) Higher acid number (C) Higher flash point and fire point (D) Lower flash point and fire point

Description : Higher viscosity of lubricating oil usually signifies (A) Lower Reid vapour pressure (B) Higher acid number (C) Higher flash point and fire point (D) Lower flash point and fire point

Last Answer : (C) Higher flash point and fire point

. __________ is not an important refinery process for upgrading the quality of lubricating oil.(A) Deoiling (B) Solvent refining (C) Clay treatment (D) Hydro-treatment

Description : . __________ is not an important refinery process for upgrading the quality of lubricating oil. (A) Deoiling (B) Solvent refining (C) Clay treatment (D) Hydro-treatment

Last Answer : (A) Deoiling

Polymerisation (A) Produces i-octane from cracked gases containing i-butane and butene (B) Causes olefins to combine with each other (C) Causes aromatics to combine with each other (D) Is aimed at producing lubricating oil

Description : Polymerisation (A) Produces i-octane from cracked gases containing i-butane and butene (B) Causes olefins to combine with each other (C) Causes aromatics to combine with each other (D) Is aimed at producing lubricating oil

Last Answer : (B) Causes olefins to combine with each other

The proper arrangement of the petroleum fractions in order of their boiling points is (A) Lubricating oil > diesel > petrol > LPG (B) Lubricating oil > petrol > diesel > LPG (C) Petrol > lubricating oil > diesel > LPG (D) Petrol > diesel > LPG > lubricating oil

Description : The proper arrangement of the petroleum fractions in order of their boiling points is (A) Lubricating oil > diesel > petrol > LPG (B) Lubricating oil > petrol > diesel > LPG (C) Petrol > lubricating oil > diesel > LPG (D) Petrol > diesel > LPG > lubricating oil

Last Answer : (A) Lubricating oil > diesel > petrol > LPG

A multigrade lubricating oil means an oil having high (A) Viscosity index (B) Viscosity (C) Aniline point (D) Flash point

Description : A multigrade lubricating oil means an oil having high (A) Viscosity index (B) Viscosity (C) Aniline point (D) Flash point

Last Answer : (A) Viscosity index

__________ treatment is done for appreciable improvement in viscosity index of lubricating oil. (A) Acid (B) Solvent extraction (C) Alkali (D) Clay

Description : __________ treatment is done for appreciable improvement in viscosity index of lubricating oil. (A) Acid (B) Solvent extraction (C) Alkali (D) Clay

Last Answer : (B) Solvent extraction

Paraffins are desirable in lubricating oil, as it has got high (A) Viscosity (B) Viscosity index (C) Smoke point (D) Pour poin

Description : Paraffins are desirable in lubricating oil, as it has got high (A) Viscosity (B) Viscosity index (C) Smoke point (D) Pour poin

Last Answer : (C) Smoke point

Aromatics are desired constituents of (A) Lubricating oil (B) Diesel (C) Kerosene (D) Petrol

Description : Aromatics are desired constituents of (A) Lubricating oil (B) Diesel (C) Kerosene (D) Petrol

Last Answer : (D) Petrol

Moisture can be removed from lubricating oil using (A) Tubular centrifuge (B) Clarifier (C) Sparkler filter (D) Vacuum leaf filter

Description : Moisture can be removed from lubricating oil using (A) Tubular centrifuge (B) Clarifier (C) Sparkler filter (D) Vacuum leaf filter

Last Answer : (A) Tubular centrifuge

Ultracentrifuges running at speeds upto 100000 rpm is normally used for the (A) Separation of isotopes based on their density or molecular weights difference (B) Concentration of rubber latex (C) Separation of cream from milk (D) Dewaxing of lubricating oil

Description : Ultracentrifuges running at speeds upto 100000 rpm is normally used for the (A) Separation of isotopes based on their density or molecular weights difference (B) Concentration of rubber latex (C) Separation of cream from milk (D) Dewaxing of lubricating oil

Last Answer : (A) Separation of isotopes based on their density or molecular weights difference (B) Conc

With increase in temperature, the thermal conductivity of fresh lubricating oil (A) Increases (B) Decreases (C) Remains unchanged (D) May increase or decrease; depends on its composition

Description : With increase in temperature, the thermal conductivity of fresh lubricating oil (A) Increases (B) Decreases (C) Remains unchanged (D) May increase or decrease; depends on its composition

Last Answer : (B) Decreases

Medium viscosity lubricating oil can be most ideally pumped by a __________ pump. (A) Vane (B) Piston (C) Centrifugal (D) Plunger

Description : Medium viscosity lubricating oil can be most ideally pumped by a __________ pump. (A) Vane (B) Piston (C) Centrifugal (D) Plunger

Last Answer : (A) Vane

Higher viscosity index of a lubricating oil denotes (A) Less changes in fluidity of oil with temperature (B) Substantially high change in fluidity of oil with temperature (C) Its unsuitability under varying temperature conditions (D) None of these

Description : Higher viscosity index of a lubricating oil denotes (A) Less changes in fluidity of oil with temperature (B) Substantially high change in fluidity of oil with temperature (C) Its unsuitability under varying temperature conditions (D) None of these

Last Answer : (A) Less changes in fluidity of oil with temperature

Shaving soaps are (A) Soft potassium soaps (potassium salt of fatty acid) with free Stearic acid to give lather a lasting property (B) Metallic soaps compounded with frothing agents (C) High free alkali soaps having excess of cane sugar and alcohol (D) None of these

Description : Shaving soaps are (A) Soft potassium soaps (potassium salt of fatty acid) with free Stearic acid to give lather a lasting property (B) Metallic soaps compounded with frothing agents (C) High free alkali soaps having excess of cane sugar and alcohol (D) None of these

Last Answer : (A) Soft potassium soaps (potassium salt of fatty acid) with free Stearic acid to give lather a lasting property

What is a metallic radical present in toilet soap?

Description : What is a metallic radical present in toilet soap?

Last Answer : Potassium

Fatty material used in soap making is (A) Fatty acid (B) Fatty alcohols (C) Tallow (D) Detergents

Description : Fatty material used in soap making is (A) Fatty acid (B) Fatty alcohols (C) Tallow (D) Detergents

Last Answer : (C) Tallow

Which temperature for a lubricating oil will be lowest ? (A) Flash point (B) Fire point (C) Pour point (D) Boiling

Description : Which temperature for a lubricating oil will be lowest ? (A) Flash point (B) Fire point (C) Pour point (D) Boiling

Last Answer : Ans: C

In a 75 cc engine the parameter cc indicates a. fuel tank capacity b. lubricating oil capacity c. swept volume d. cylinder volume

Description : In a 75 cc engine the parameter cc indicates a. fuel tank capacity b. lubricating oil capacity c. swept volume d. cylinder volume

Last Answer : ANSWER c. swept volume

Which of the following medium is compressed in a diesel engine cylinder? a. air b. air and fuel c. air and lubricating oil d. fuel

Description : Which of the following medium is compressed in a diesel engine cylinder? a. air b. air and fuel c. air and lubricating oil d. fuel

Last Answer : ANSWER a. air

Which one of the following petroleum refinery products has the lowest boiling point? (1) Kerosene (2) Gasoline (3) Diesel (4) Lubricating oil

Description : Which one of the following petroleum refinery products has the lowest boiling point? (1) Kerosene (2) Gasoline (3) Diesel (4) Lubricating oil

Last Answer : (4) Lubricating oil Explanation: Lubricating oil is the most commonly used lubricant because of its wide range of possible applications. The two basic categories of lube oil are mineral and synthetic.

Coast Guard Regulations (46 CFR) require that the emergency diesel generator engine shut down when _____________. A. lubricating oil pressure is lost B. the engine overspeeds dangerously C. fixed CO2 is released into the emergency diesel generator space D. all of the above

Description : Coast Guard Regulations (46 CFR) require that the emergency diesel generator engine shut down when _____________. A. lubricating oil pressure is lost B. the engine overspeeds dangerously C. fixed CO2 is released into the emergency diesel generator space D. all of the above

Last Answer : Answer: D

If the bearings of an electrical generator are failing more frequently than expected and the lubricating oil is sludging then you should ______________. A. check the connections to the output leads B. check the bearing insulating block on one end of the unit C. replace the bearing with a sealed roller type D. replace the thrust bearing of the prime mover

Description : If the bearings of an electrical generator are failing more frequently than expected and the lubricating oil is sludging then you should ______________. A. check the connections to the output leads B. ... replace the bearing with a sealed roller type D. replace the thrust bearing of the prime mover

Last Answer : Answer: B

Why consumption of lubricating oil is more in two-stroke cycle petrol engine than four-stroke cycle petrol engine ?

Description : Why consumption of lubricating oil is more in two-stroke cycle petrol engine than four-stroke cycle petrol engine ?

Last Answer : In two-stroke engine lub oil is mixed with petrol and thus some lub oil is blown out through the exhaust valves by scavenging and charging air. There is no such wastage in four stroke petrol engine.

_______is suitable as a lubricant for heavy-duty applications of rolling contact bearing. (a) Grease (b) Lubricating oil (c) Graphite (d) Air

Description : _______is suitable as a lubricant for heavy-duty applications of rolling contact bearing. (a) Grease (b) Lubricating oil (c) Graphite (d) Air

Last Answer : (b) Lubricating oil

________is suitable as a lubricant for low and moderate loads applications of rolling contact bearing. (a) Grease (b) Lubricating oil (c) Graphite (d) Air

Description : ________is suitable as a lubricant for low and moderate loads applications of rolling contact bearing. (a) Grease (b) Lubricating oil (c) Graphite (d) Air

Last Answer : (a) Grease

As compared with oil with VI=80, a lubricating oil with VI=90 (A) Has more viscosity (B) Has less viscosity (C) Has more rate of change of viscosity with respect to temperature (D) Has less rate of change of viscosity with respect to temperature

Description : As compared with oil with VI=80, a lubricating oil with VI=90 (A) Has more viscosity (B) Has less viscosity (C) Has more rate of change of viscosity with respect to temperature (D) Has less rate of change of viscosity with respect to temperature

Last Answer : (D) Has less rate of change of viscosity with respect to temperature

A knocking sound is produced in the engine when the fuel (a) Burns fast (b) contains lubricating oil (c) Burns slow (d) contains water

Description : A knocking sound is produced in the engine when the fuel (a) Burns fast (b) contains lubricating oil (c) Burns slow (d) contains water

Last Answer : Burns fast

Octane number is related to (a) Gasoline (b) Kerosene oil (c) Diesel oil (d) Lubricating oi

Description : Octane number is related to (a) Gasoline (b) Kerosene oil (c) Diesel oil (d) Lubricating oi

Last Answer : Gasoline

Explain the selection of lubricating oil on the basis of viscosity and service rating.

Description : Explain the selection of lubricating oil on the basis of viscosity and service rating.

Last Answer : Selection of Lubricating Oil: 1. On the basis of Viscosity : Lubricating Oils Classify in terms of Viscosity at -180C or in cold climates. a) SAE 5W b) SAE 10W c) SAE ... stability & anti- scuff Protection c) SC, SD & SC: Meets automotive manufactures specifications. 

Classify lubricating oil using viscosity (SAE) and load severity (API) rating.

Description : Classify lubricating oil using viscosity (SAE) and load severity (API) rating.

Last Answer : 1.On the basis of Viscosity : i. Lubricating Oils Classify in terms of Viscosity at -18 0C or in cold climates. a) SAE 5W b) SAE 10W c) SAE 20 W ii. Lubricating Oils Classify ... sum oxidation stability & anti- scuff c. protection d. SC, SD & SE: Meets automotive manufactures specifications.