Description : Name the products obtained by combustion pyrolysis.
Last Answer : Fuel gas, ethanol and charcoal
Description : Which is correct matched ? 1. Arsenic poisoning -Black foot disease. 2. Secondary Effluent treatment-Biological process. 3. Pyrolysis -Solid soil wast
Last Answer : Which is correct matched ? 1. Arsenic poisoning -Black foot disease. 2. Secondary Effluent treatment-Biological process. 3. ... C. 2,3,4,5 D. 1,2,3,4
Description : Which one of the following statements about PYROLYSIS, which is a process for solid waste treatment is incorrect? (1) It converts the waste into solid, liquid and gas of which the resultant liquid ... pressure at temperature above 430° C. (4) It is a thermo chemical decomposition of organic waste
Last Answer : (2) The process occurs at a temperature above 430°C at atmospheric pressure. Explanation: Pyrolysis is a thermo-chemical decomposition of organic material at elevated temperatures in the ... . Pyrolysis generally takes place well above atmospheric pressure at temperatures exceeding above 430 °C.
Description : The biological decomposition of organic substances in wastes under controlled conditions known as - (1) composting (2) incineration (3) sanitary landfill (4) pyrolysis
Last Answer : (1) composting
Description : Wich of the following is a method/process of disposing of solid waste which cannot be re-used or recycled? (1) Landfills (2) Incineration (3) Pyrolysis and Gasification (4) An the above
Last Answer : (4) An the above Explanation: Landfills, Incineration, Pyrolysis and Gasification are methods of disposing of solid waste which cannot be reused or recycled.
Description : Thermal pyrolysis of ethylene dichloride produces (A) Trichloroethylene (B) Vinyl chloride (C) Ethanol amine (D) Ethylene oxid
Last Answer : (B) Vinyl chloride
Description : Which one of the following processes aims at producing higher yield of gaseous unsaturated hydrocarbons and aromatics like benzene & toluene? (A) Reforming (B) Pyrolysis (C) Alkylation (D) Hydrocracking
Last Answer : (A) Reforming
Description : Which of the following processes in oil refinery does not employ ‘cracking’? (A) Coking (B) Visbreaking (C) Pyrolysis (D) None of these
Last Answer : (D) None of these
Description : Pyrolysis of kerosene or natural gasoline is done to produce mainly the (A) Olefins and aromatics (B) Lighter paraffins (C) Stabilised gasoline (D) Diesel
Last Answer : (A) Olefins and aromatic
Description : Road grade bitumen is produced from vacuum residue by its (A) Aeration (B) Pyrolysis (C) Hydrogenation (D) Steam reforming
Last Answer : (D) Steam reforming
Description : Pick out the wrong statement. (A) Higher temperature is employed in visbreaking than in thermal cracking (B) Pyrolysis is a mild thermal cracking process (C) Lead susceptibility of ... Operating pressure and temperature in thermal cracking process is more than that in catalytic cracking process
Last Answer : (A) Higher temperature is employed in visbreaking than in thermal cracking (B) Pyrolysis is a mild thermal cracking process
Description : What do you mean by pyrolysis?
Last Answer : The decomposition of a compound by the heat is called pyrolysis. This process when applied to alkanes is known as cracking.
Description : Presence of free moisture in coal during its high temperature carbonisation (A) Reduces the coking time (B) Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls (C) Increases the loss of fine coal dust from the ovens when charging (D) None of these
Last Answer : (B) Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls
Description : Radioactive solid nuclear wastes are disposed off by (A) High temperature incineration (B) Pathological incineration (C) Pyrolysis (D) Underground burial in concrete containers
Last Answer : (D) Underground burial in concrete containers
Description : Vinyl chloride (CH2 = CH.Cl) is produced by the thermal pyrolysis of ethylene dichloride at a pressure & temperature of (A) 4 kgf/cm2 & 500°C (B) 10 kgf/cm2 & 1000°C (C) 40 kg/cm2 & 200°C (D) 100 kgf/cm2 & 500°C
Last Answer : (A) 4 kgf/cm2 & 500°C
Description : Thermal pyrolysis of ethylene dichloride produces (A) Trichloroethylene (B) Vinyl chloride (C) Ethanol amine (D) Ethylene oxide
Description : Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in (A) Pyrolysis of oil (B) Sintering of porous catalyst (C) Hydrogen embrittlement (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Commercially ethylene is produced from naphtha by (A) Catalytic cracking (B) Catalytic dehydrogenation (C) Pyrolysis (D) Hydrocracking
Last Answer : (D) Hydrocracking
Description : Describe the following unit processes: (i) Pyrolysis (ii) Hydration (iii) Hydrogenation.
Last Answer : i)Pyrolysis: The decomposition of a compound by heat is called pyrolysis. Large alkane molecules are broken down to give lower molecular weight alkanes, alkenes and hydrogen. Eg: When ethane is heated to 500 ... Chemical Reaction for hydrogenation: CH2= CH2 + H2 → CH3-CH3 C6H6 + 3H2→C6H12
Description : Which one of the following statements about PYROLYSIS, which is a process for solid waste treatment is incorrect? (1) It converts the waste into solid, liquid and gas of which the resultant ... high pressure at temperature above 430° C. (4) It is a thermochemical decomposition of organic waste
Last Answer : The process occurs at a temperature above 430°C at atmospheric pressure.
Description : The biological decomposition of organic substances in wastes under controlled conditions known as (1) composting (2) incineration (3) sanitary landfill (4) pyrolysis
Last Answer : composting
Description : Which of the following is a method/process of disposing of solid waste which cannot be reused or recycled ? (1) Landfills (2) Incineration (3) Pyrolysis and Gasification (4) All the above
Last Answer : All the above