Description : In petroleum refining, the process used for conversion of hydrocarbons to aromatics is (A) Catalytic cracking (B) Catalytic reforming (C) Hydrotreating (D) Alkylation
Last Answer : (B) Catalytic reforming
Description : Ammonia synthesis gas is produced from fuel oil by (A) Steam reforming (B) Hydro-cracking (C) Partial oxidation (D) Hydrogenation
Last Answer : (C) Partial oxidation
Description : Ammonia synthesis gas is produced from natural gas by (A) Thermal cracking (B) Steam reforming (C) Partial oxidation (D) Hydrogenation
Last Answer : (B) Steam reforming
Description : Nickel is not used as a catalyst in the __________ reaction. (A) Shift conversion (B) Oil hydrogenation (C) Steaming reforming of naphtha (D) Ammonia cracking/dissociation
Last Answer : (A) Shift conversion
Description : Hydrocarbons are decomposed into smaller hydrocarbons by a) reforming b) refining c) cracking d) polymerization
Last Answer : Answer: c Explanation: Hydrocarbons are decomposed into smaller hydrocarbons by cracking while the molecular structure of the straight-run gasoline is changed by reforming.
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 : Straight run naphtha is converted into high octane number petrol (gasoline) by catalytic (A) Cracking (B) Polymerisation (C) Reforming (D) Isomerisation
Last Answer : (C) Reforming
Description : The molecular structure of the straight-run gasoline is changed by a) reforming b) refining c) cracking d) boiling
Last Answer : Answer: a Explanation: The molecular structure of the straight-run gasoline is changed by reforming and hydrocarbons are decomposed into smaller hydrocarbons by cracking.
Description : Cooking oil can be converted into vegetable ghee by the process of 1. hydrogenation 2. distillation 3. crystallisation 4. reduction The correct processes are: (a) 1 and 4 (b) 2 and 4 (c) 1 and 3 (d) 3 and 4
Last Answer : Ans:(a)
Description : A liquid/gaseous fuel containing hydrocarbons and high amount of sulphur is burnt with 40% excess air. The flue gas still contains large amount of carbon monoxide. This may be due to the (A) Presence of large ... fuel (C) High sulphur content in the fuel (D) Lack of thorough mixing of fuel with air
Last Answer : (D) Lack of thorough mixing of fuel with air
Description : The main reaction in reforming is the (A) Dehydrogenation of naphthenes (B) Hydrogenation of naphthenes (C) Hydrocracking of paraffins (D) Saturation of olefins
Last Answer : (A) Dehydrogenation of naphthenes
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 : Sulphuric acid is used as a catalyst in the (A) Hydrogenation of oils (B) Gas phase oxidation of SO2 in chamber process (C) Alkylation of hydrocarbons (D) None of these
Last Answer : (C) Alkylation of hydrocarbons
Description : Liquid oils can be converted to solid fats by (a) Hydrogenation (b) Saponification (c) Hydrolysis (d) Oxidation of double bonds
Last Answer : Hydrogenation
Description : Choose the correct statement regarding thermal cracking. (A) Moderate changes in operating temperature does not change the depth of cracking (B) Increased residence time results in the decreased ... of lighter hydrocarbons are more (D) Greater depth of cracking gives lower octane number gasoline
Last Answer : (D) Greater depth of cracking gives lower octane number gasoline
Description : Asphalts are (A) Low molecular weight & low boiling point compounds present in petroleum (B) Desirable in catalytic cracking feedstock, because they produce coke (C) Readily oxidisable and form carbonaceous sludge (D) All (A), (B) & (C)
Last Answer : (C) Readily oxidisable and form carbonaceous sludge
Description : . Reforming (A) Uses naphtha as feedstock (B) Does not much affect the molecular weight of the feed (C) Improves the quality & yield of gasoline (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Which of the following processes is used for the production of petroleum coke? (A) Stabilisation (B) Visbreaking (C) Cracking (D) Reforming
Last Answer : (C) Cracking
Description : Which of the following is not endothermic? (A) Cracking (B) Reforming (C) Gasification (D) Partial oxidation
Last Answer : (D) Partial oxidation
Description : Which of the following is the costliest source of hydrogen needed for ammonia manufacture under Indian condition? (A) Electrolysis of water (B) Cryogenic removal of H2 from coke oven gas (C) Steam reforming of naphtha (D) Natural gas cracking
Last Answer : (A) Electrolysis of water
Description : Commercial production of hydrogen for the manufacture of nitrogenous fertilisers is done by (A) Steam reforming of naphtha and cracking of natural gas (B) Electrolysis of water (C) Cryogenic separation of hydrogen from coke oven gas (D) All (A), (B) and (C)
Description : Which of the following is the costliest method for commercial production of hydrogen for ammonia synthesis? (A) H2 separation from coke oven ga (B) Steam reforming of naphtha (C) Cracking of natural gas (D) Electrolysis of water
Last Answer : (D) Electrolysis of water
Description : Which of the following is not endothermic in nature? (A) Combustion of sulphur (B) Gasification of carbon (C) Thermal cracking of fuel oil (D) Steam reforming of naphtha
Last Answer : (A) Combustion of sulphur
Description : Why do alcohols have boiling points much higher than hydrocarbons of similar molecular weight? (a) Alcohols have greater van der Waals attraction forces. (b) Alcohol molecules have greater ... of volatilization. (d) Alcohols must overcome greater ionic forces in the process of volatilization.
Last Answer : Hydrogen bonds must be broken in the process of volatilization
Description : When petroleum is refined it is subject to a number of processes including cracking. During the cracking process w) lighter hydrocarbons are combined to form heavier ones x) heavy hydrocarbons ... lighter hydrocarbons are separated by distillation z) oxygen is used to burn the heavier hydrocarbons
Last Answer : ANSWER: X -- HEAVY HYDROCARBONS ARE BROKEN UP INTO LIGHTER ONES
Description : Cooking oil can be converted into vegetable ghee by the process of – (1) oxidation (2) hydrogenation (3) distillation (4) crystalisation
Last Answer : (2) hydrogenation Explanation: An example of an alkene addition reaction is a process called hydrogenation. In a hydrogenation reaction, two hydrogen atoms are added across the double bond of an alkene, resulting in a saturated alkane.
Description : Cooking oil can be converted into vegetables ghee by the process of – (1) Oxidation (2) Hydrogenation (3) Distillation (4) Crystallization
Last Answer : (2) Hydrogenation Explanation: Hydrogenation is a chemical reaction - widely used in the processing of cooking oils and fats - that turns unsaturated fatty acids into saturated ones.
Description : Cooking oil can be converted into vegetable ghee by the process of (1) oxidation (2) hydrogenation (3) distillation (4) crystalisation
Description : Oils and fats are converted to soap in a process called (A) Hydrogenation (B) Esterification (C) Saponification (D) None of these
Last Answer : (C) Saponification
Description : The thermal decomposition of alkanes in the absence of air is called : (a) Combustion (b) Oxidation (c) Cracking (d) Hydrogenation
Last Answer : Cracking
Description : The gaseous form of chlorine gets converted into liquid form when subjected to a pressure of (A) 5 kg/cm2 (B) 6 kg/cm2 (C) 7 kg/cm2 (D) 10 kg/cm
Last Answer : (C) 7 kg/cm
Description : In tractor engine which of the following is a device in which liquid fuel is converted into gaseous fuel? 1. Piston 2. Carburetor 3. Both 1 and 2 4. none of these ans 1
Last Answer : ans 1
Description : Pick out the wrong statement about the smoking tendency of various hydrocarbon constituents of kerosene. (A) Smoking tendency of hydrocarbons increases in the order: paraffins → isoparaffins → naphthenes → aromatics (B) Smoking tendency of paraffins increases with decrease in its molecular weight
Last Answer : (B) Smoking tendency of paraffins increases with decrease in its molecular weight
Description : Sometimes water is sprayed during coal charging in the coke oven, which helps in (A) Prevention of clinker formation in the oven (B) Controlling the dust nuisance while charging the coal (C) Reducing the cracking of hydrocarbons in ... represented by C + H2O = CO + H2 ) (D) All (A), (B) and (C)
Description : A gaseous fuel in order to develop luminosity on burning, must contain (A) Carbon monoxide (B) Hydrocarbons (C) Hydrogen (D) Oxygen
Last Answer : (B) Hydrocarbons
Description : Vegetable oils are converted into solid fat (ghee) by - (1) Hydrolysis (2) Addition of agar (3) Oxidation using air and a catalyst (4) Hydrogenation
Last Answer : (4) Hydrogenation Explanation: Hydrogenation - to treat with hydrogen - is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a ... oils are derived from polyunsaturated fatty acids (containing more than one carbon-carbon double bonds).
Description : Which of the following statements are false about benzene? (a) It is a planar molecule with bond angles 120°. (b) It is immiscible with water forming the lower layer. (c) It can be ... Ni catalyst. (d) It reacts with ethyl chloride in the presence of aluminium chloride to form ethylbenzene.
Last Answer : It is immiscible with water forming the lower layer
Description : Pick out the correct statement. (A) A fat is converted into oil by its hydrogenation (B) There is no difference between a fat and an oil so far as its physical properties are ... Vegetable oils are classified as drying, non-drying and semi drying oils depending upon their fatty acids content
Last Answer : (C) All vegetable oils except coconut oil, contains fatty acids having more than sixteen carbon atoms
Description : An oil is converted into fat by its (A) Hydrogenation (B) Hydrolysis (C) Hydrocracking (D) Hydration
Last Answer : (A) Hydrogenation
Description : Vegetable oils are converted into solid fat (ghee) by (1) Hydrolysis (2) Addition of agar (3) Oxidation using air and a catalyst (4) Hydrogenation
Description : C.V. (kcal/Nm3 ) of gaseous fuels __________ with increase in molecular weight. (A) Decreases (B) Increases (C) Remain constant (D) May increase or decrease, depends on combustibles
Last Answer : (D) May increase or decrease, depends on combustibles
Description : In the gaseous diffusion process of uranium enrichment, the natural uranium is converted into gaseous (A) Uranium oxide (B) Uranium hexafluoride (C) Uranium carbide (D) Uranium sulphate
Last Answer : (B) Uranium hexafluoride
Description : _________ process is meant for direct hydrogenation of coal to produce liquid fuel. (A) Fischer-Tropsch (B) Bergius (C) Lurgi (D) None of these
Last Answer : (B) Bergius
Description : Alloy powder manufactured by the following process have spherical shapes. (A) Electrochemical deposition (B) Gaseous reduction (C) Atomisation (D) Mechanical attrition
Last Answer : (C) Atomisation
Description : Wutomobile catalytic converters cause the carbon monoxide and hydrocarbons which result from incomplete combustion to be converted into what two substances?
Last Answer : ANSWER: CARBON DIOXIDE (CO2) AND WATER (H2O)
Description : The equivalent weight of `MnSO_(4)` is half its molecular weight when it is converted to
Last Answer : The equivalent weight of `MnSO_(4)` is half its molecular weight when it is converted to A. `Mn_(2)O_(3)` B. ` ... . `MnO_(4)^(-)` D. `MnO_(4)^(-2)`
Description : Which of the following statement is incorrect? A. The liquid fuels consist of hydrocarbons. B. The liquid fuels have higher calorific value than solid fuels. C. The solid fuels have higher calorific value than liquid fuels. D. A good fuel should have low ignition point.
Last Answer : Answer: C
Description : White smoke coming out of the chimney of a furnace indicates the useof (A) Low excess air (B) Very high excess air (C) Gaseous fuel in the furnace (D) Liquid fuel in the furnace
Last Answer : (B) Very high excess air
Description : The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and recondensed, then the liquid with the next higher boiling point is then evaporated and ... is called A. cracking B. carbonisation C. fractional distillation D. full distillation
Description : In which of the following pair(s) the minerals are converted in to metals by self-reduction process?
Last Answer : In which of the following pair(s) the minerals are converted in to metals by self-reduction process? A. `Cu_(2)S, ... `PbS, ZnS` D. `Ag_(2)S, Cu_(2)S`