Description : The process of improving the quality of rubber by heating it with sulphur is called. (1) Vulcanization (2) Acceleration (3) Sulphonation (4) Galvanization
Last Answer : (1) Vulcanization Explanation: Vulcanization is a chemical process for converting natural rubber into more durable materials via the addition of sulfur or other equivalent curatives or accelerators. These additives modify the polymer by forming crosslinks (bridges) between individual polymer chains.
Last Answer : Vulcanization
Description : The process of heating the rubber by adding sulphur?
Description : Heating rubber with sulphur for the bet- terment of its properties ike tensile steqasbh: hardness; elasticity etc. is called as?
Last Answer : Vulcanisation
Description : Sulphur in metallurgical coal (A) Contributes to its heating value (B) Affects the quality of steel produced as cracks develop on the surface while rolling the steel (C) Both (A) and (B) (D) Neither (A) nor (B)
Last Answer : (C) Both (A) and (B)
Description : Mastication of rubber means (A) Its softening (B) A treatment to retard its deterioration due to oxidation (C) Improving its curing rate (D) Depression of its freezing point
Last Answer : (A) Its softening
Description : Addition of lead, sulphur and phosphorus to low carbon steel helps in improving its (A) Corrosion resistance (B) Tensile strength (C) Machinability (D) Compressive strength
Last Answer : (C) Machinability
Description : Addition of __________ to steel does not help in improving its machinability. (A) Sulphur (B) Silicon (C) Lead (D) Phosphorous
Last Answer : (B) Silicon
Last Answer : Option B
Description : The hyperboloid shape also aids in accelerating the upward convective air flow, improving ________ efficiency. • Performance • Cooling • Heating • All of the above
Last Answer : cooling
Description : The hyperboloid shape also aids in accelerating the upward convective air flow, improving __________ efficiency. a. Heating b. Warming c. Cooling d. Cold
Last Answer : c. Cooling
Description : In vulcanisation process, rubber can be hardened by adding - (1) Nitrogen (2) Silicon (3) Sulphur (4) Alcohol
Last Answer : (3) Sulphur Explanation: In order to give more strength and more elasticity, natural rubber is heated with sulphur or sulphur compounds at 150°C temperature. Vulcanized rubber has good tensile strength.
Description : In vulcanisation process, rubber can be hardened by adding (1) Nitrogen (2) Silicon (3) Sulphur (4) Alcohol
Last Answer : Sulphur
Description : which of the following is not a technological way of improving air quality? -General Knowledge
Last Answer : C. composting is the answer.
Description : Which is used for improving fruit quality of grape?
Last Answer : Ans. 20 ppm GA
Description : Which Sultan of Delhi introduced measures for improving the quality of fruits?
Last Answer : Firoz shah Tughlaq
Description : Contract farming consists of...... (A) hiring land by farmers on contract basis for cultivation (B) supply of agreed quantity of produce to agreed price to the company (C) company taking on ... and to give back to farmers (E) providing inputs by company to farmers for improving quality of produce
Last Answer : (C) company taking on lease basis farmers’ land for cultivation
Description : Contract farming consists of...... (A) hiring land by farmers on contract basis for cultivation (B) supply of agreed quantity of produce to agreed price to the company (C) company taking on lease ... and to give back to farmers (E) providing inputs by company to farmers for improving quality of prod
Last Answer : (D) processing cash crops, vegetables etc. by company and to give back to farmers
Description : Assurance services involve all the following except: a. Improving the quality of information for decision purposes. b. Improving the quality of the decision model used. c. Improving the relevance of information. d. Implementing a system that improves the processing of information
Last Answer : Implementing a system that improves the processing of information
Description : Which of the following statements reflect a goal of rehabilitation for the patient with an MI: a) To improve the quality of life Overall, cardiac rehabilitation is a complete program dedicated ... event An immediate objective of rehabilitation of the MI patient is to prevent another cardiac event.
Last Answer : a) To improve the quality of life Overall, cardiac rehabilitation is a complete program dedicated to extending and improving quality of life.
Description : 16. Operations Research simply helps in improving the ______ of the solution but does not result in a perfect solution a. Quality b. Clarity c. Look d. None of the above
Last Answer : a. Quality
Description : Which of the Which of the following is following is the least the least likely decision likely decision to be made by made by Operations Operations Managers? a. How much How much capacity is ... a facility e. Designing and Designing and improving the improving the jobs of jobs of the workforce
Last Answer : . Deciding which market areas to manufacture products for
Description : The most formal definition of marketing is ________. A. Meeting needs profitably B. Identifying and meeting human and social needs C. The four Ps (product, price, place, promotion) D. ... ways that benefit the organization and its stakeholders. E. Improving the quality of life for consumers
Last Answer : D. An organizational function and a set of processes for creating, communicating, and delivering value to customers and for managing customer relationships in ways that benefit the organization and its stakeholders.
Description : Today‟s managers understand that the success of any effort at improving quality and productivity must include _____. (a) Quality management programs ; (b) Customer service improvements (c) Employee's participation ; (d) Manufacturing simplification
Last Answer : (c) Employee's participation ;
Description : Explain energy conservation technique “by improving power quality” for induction motor.
Last Answer : Energy conservation method in induction motor by improving power quality: Electrical energy can be conserved by improving the power quality. It can be achieved by avoiding voltage unbalance, maintaining ... losses can be minimized by using harmonic filter thus reducing the harmonics in the system.
Description : The element used for vulcanizing rubber is - (1) Sulphur (2) Bromine (3) Silicon (4) Phosphorus
Last Answer : (1) Sulphur Explanation: The vulcanization of neoprene or polychloroprene rubber (CR rubber) is carried out using metal oxides (specifically MgO and ZnO, sometimes Pb3O4) rather than sulfur compounds which are presently used with many natural and synthetic rubbers.
Description : Vulcanized rubber contains sulphur – (1) 2% (2) 3-5% (3) 7-9% (4) I 0- 5%
Last Answer : (2) 3-5% Explanation: A vulcanized flexible tyre rubber contains about 3 -5% of sulphur whereas hard rubber (ebonite) contains about 32% of sulphur. The stiffness of vulcanized rubber depends on the amount of sulphur added.
Description : In vulcanization, natural rubber is heated with- (1) Carbon (2) Sulphur (3) Silicon (4) Phosphorus
Last Answer : (2) Sulphur Explanation: Vulcanization of rubber is a process of improvement of the rubber elasticity and strength by heating it in the presence of sulfur, which results in three-dimensional crosslinking of the chain rubber molecules (polyisoprene) bonded to each other by sulfur atoms.
Description : The element which is used for vulcanizing rubber – (1) Sulphur (2) Bromine (3) Silicon (4) Phosphorus
Last Answer : (1) Sulphur Explanation: Vulcanisation is a chemical process for converting rubber or related polymers into more durable materials via the addition of sulfur or other equivalent "curatives" or "accelerators". By far the most common vulcanizing methods depend on sulfur.
Description : The substance that is added to make natural rubber strong and more bouncy is – (1) Polythene (2) Sponge (3) Sulphur (4) Chlorine
Last Answer : (3) Sulphur Explanation: Vulcanization is a chemical process for converting rubber or related polymers into more durable materials via the addition of sulfur or other equivalent "curatives ... individual polymer chains. Vulcanized materials are less sticky and have superior mechanical properties.
Description : Most commonly used rubber vulcanisation agent is (A) Sulphur (B) Bromine (C) Platinum (D) Alumina
Last Answer : (A) Sulphur
Description : Pick out the wrong statement. (A) Benzopyrene which causes cancer is present in traces in tobacco, charcoal & petrol driven automobile exhaust (B) NO2 is capable of penetrating the troposphere and ... at all produced during combustion of sulphur bearing fuels as all the sulphur is oxidised to SO2
Last Answer : (D) H2S is not at all produced during combustion of sulphur bearing fuels as all the sulphur is oxidised to SO2
Description : . Most commonly used rubber vulcanising agent is (A) Sulphur (B) Bromine (C) Platinum (D) Alumina
Description : Vulcanized rubber contains sulphur (1) 2% (2) 3-5% (3) 7-9% (4) 10-15%
Last Answer : 3-5%
Description : The element which is used for vulcanizing rubber (1) Sulphur (2) Bromine (3) Silicon (4) Phosphorus
Description : The substance that is added to make natural rubber strong and more bouncy is (1) Polythene (2) Sponge (3) Sulphur (4) Chlorine
Description : Vulcanization of rubber is carried out by adding (1) Sulphur (2) Carbon (3) Ozone (4) Phosphorus
Description : Sulphur removal by heating of pyrite ore in presence of air is called its (A) Reduction (B) Roasting (C) Calcination (D) Smelting
Last Answer : (B) Roasting
Description : Heating pyrites in air to remove sulphur is known as which name? -General Knowledge
Last Answer : The answer is 'Roasting'
Last Answer : answer:
Description : Heating pyrites in air to remove sulphur is known as which name?
Last Answer : Roasting
Description : During the manufacture of sulphuric acid, the temperature of molten sulphur is not increased beyond 160°C, as (A) It is very corrosive at elevated temperature (B) Its viscosity is not reduced on ... be further reduced) (C) It decomposes on further increasing the temperature (D) None of these
Last Answer : (B) Its viscosity is not reduced on further heating (hence pressure drop on pumping it, cannot be further reduced)
Description : Pick out the wrong statement. (A) Conversion of SO2 to SO3 in Monsanto-4 pass converter is about 98% (B) The chemical formula of oleum is H2S2O7 , which is formed by saturating ... but technical sulphuric acid (D) Decomposition of sulphuric acid on heating does not start before its boiling
Last Answer : (D) Decomposition of sulphuric acid on heating does not start before its boiling
Description : Find false statement about effect of sulphur in fuel? (A) It has heating value (B) It helps in electrostatic precipitation of ash in flue gases (C) It leads to corrosion of air heaters, ducting, etc. if flue gas exit temperature is low (D) It erodes furnace walls
Last Answer : (D) It erodes furnace walls
Description : A process that involves continuously improving and detailing a plan as more detail become available is termed as (A) project analysis (B) project enhancing (C) progressive deliberation (D) progressive elaboration
Last Answer : (D) progressive elaboration
Description : Pick out the wrong statement. (A) Both annealing and normalising release the internal stresses of the material besides improving the mechanical properties (B) Low carbon steel does not respond to ... are also used for surface hardening (D) Martempering of a material is a hardening process
Last Answer : Option C
Description : Tumbling is the process of improving the __________ of the materials/parts. (A) Surface finish (B) Fatigue limit (C) Creep limit (D) Surface cleanliness
Last Answer : Option D
Description : A coal with high ash content is undesirable, as (A) It is abrasive to the coal pulveriser (i.e. ball mill) and the combustion chamber (B) The ash in molten condition gets absorbed in the pores of the ... and stick to the boiler tubes thereby reducing the heat transfer (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : A good quality coal should have (A) Low fusion point of ash (B) High ash content (C) High sulphur (D) None of these
Last Answer : (D) None of these