Description : __________ catalytic reaction is involved in the thermal cracking of gas oil. (A) Homogeneous (B) Non-Homogeneous (C) Heterogeneous (D) Non-Heterogeneous
Last Answer : (A) Homogeneous
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 : In a digital transmission, the receiver clock is 0.1 percent faster than the sender clock. How many extra bits per second does the receiver receive if the data rate is 1 Mbps ? (A) 10 bps (B) 100 bps (C) 1000 bps (D) 10000 bps
Last Answer : (C) 1000 bps
Description : Brownian movement is prominent in the particle size range of __________ microns in case of settling of a particle in a fluid. (A) 2 to 3 (B) 0.01 to 0.10 (C) 200 to 300 (D) 100 to 1000
Last Answer : A) 2 to 3
Description : Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil (A) Gives higher yield of petrol (B) Lower octane number of petrol (C) Higher sulphur content in the product (D) Higher gum forming material in petro
Last Answer : (A) Gives higher yield of petrol
Description : Optimum reaction temperature in steam reforming of naphtha is __________ °C. (A) 700 - 1000 (B) 300 - 450 (C) 1500-1700 (D) 100-200
Last Answer : (A) 700 - 1000
Description : Petroleum coke is commercially produced by the __________ process. (A) Hydrocracking (B) Visbreaking (C) Fluid catalytic cracking (D) Delayed coking
Last Answer : (D) Delayed coking
Description : Thermofor catalytic cracking process is a __________ process. (A) Fixed bed (B) Moving bed (C) Fluidised bed (D) Non-catalytic
Last Answer : (D) Non-catalytic
Description : A hydraulic press has a ram of 10 cms in diameter and a plunger of 1 cm in diameter. The force required on the plunger to raise a weight of 10 tons on the ram is __________ kg. (A) 10 (B) 100 (C) 1000 (D) 10000
Last Answer : (B) 100
Description : Which of the following is the easiest to crack? (A) Paraffins (B) Olefins (C) Naphthenes (D) Aromatics
Last Answer : (A) Paraffins
Description : In case of physical adsorption, the heat of adsorption is of the order of __________ kcal/kg.mole. (A) 100 (B) 1000 (C) 10000 (D) 100000
Last Answer : (B) 1000
Description : For achieving rapid drying rate in a spray dryer, the diameter of the particles in the feed should be in the range of __________ microns (1 mm = 1000 microns). (A) 1-5 (B) 10-60 (C) 200-300
Last Answer : (B) 10-60
Description : In the fluid catalytic cracker (FCC), the cracking reaction is __________ (i) and the regeneration is__________ (ii) __________. (A) (i) exothermic (ii) endothermic (B) (i) exothermic (ii) exothermic (C) (i) endothermic (ii) endothermic (D) (i) endothermic (ii) exothermic
Last Answer : (D) (i) endothermic (ii) exothermic
Description : The amount of coproporphyrins excreted per day in feces is about (A) 10–50 µgs (B) 100–150 µgs (C) 200–250 µgs (D) 300–1000 µgs
Last Answer : Answer : D
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 : Octane number of gasoline produced by two stage fluidised catalytic cracking process is (A) 80 (B) 87 (C) 92 (D) 97
Last Answer : (D) 97
Description : Which of the following is the most widely used cracking process in oil refineries? (A) Dubbs process (B) T.C.C. moving bed process (C) Fluidised bed catalytic cracking process (D) Houdry's fixed bed process
Last Answer : (C) Fluidised bed catalytic cracking process
Description : From among the following, choose one which is not an exothermic process. (A) Methanol synthesis (B) Catalytic cracking (C) Ammonia synthesis (D) Oxidation of sulphu
Last Answer : (B) Catalytic cracking
Description : The following heat engine produces power of 100,000 kW. The heat engine operates between 800 K and 300 K. It has a thermal efficiency equal to 50% of that of the Carnot engine for the same temperature. The rate at which heat is ... is (A) 100,000 kW (B) 160,000 kW (C) 200,000 kW (D) 320,000 kW
Last Answer : (D) 320,000 kW
Description : Regeneration of molecular sieve requires it to be heated to a temperature of about __________ °C. (A) 80-120 (B) 200-300 (C) 600-800 (D) 1000-1100
Last Answer : (D) 1000-1100
Description : Pressure & temperature maintained in catalytic cracking is about (A) 2 atm & 500°C (B) 10 atm & 500°C (C) 30 atm & 200°C (D) 50 atm & 750°C
Last Answer : (A) 2 atm & 500°C
Description : Insensible loss of body water of normal adult is about (A) 50–100 ml (B) 100–200 ml (C) 300–500 ml (D) 600–1000 ml
Description : The daily water allowance for normal infant is about (A) 100–200 ml (B) 250–300 ml (C) 330–1000 ml (D) 1000–2000 ml
Last Answer : Answer : C
Description : In glycinuria daily urinary excretion of glycine ranges from (A) 100–200 mg (B) 300–500 mg (C) 600–1000 mg (D) 1100–1400 mg
Description : What is the LCM of 10 100 1000 and 10000?
Last Answer : The least common multiple of 10 100 1,000 and 10,000 is 10,000.
Description : Approximately how many Galaxies are there ? A. 10 Billion Galaxies B. 100 Billion Galaxies (Answer) C. 1000 Billion Galaxies D. 10000 Billion Galaxies
Last Answer : B. 100 Billion Galaxies (Answer)
Description : Amazon EBS currently supports up to ________ IOPS per volume A. 10 B. 100 C. 1000 D. 10000
Last Answer : 1000
Description : The period of a signal is 10 ms. What is its frequency in Hertz ? (A) 10 (B) 100 (C) 1000 (D) 10000
Description : Schedule number of a pipe, which is a measure of its wall thickness, is given by (A) 1000 P'/S (B) 100 P'/S (C) 1000 S/P' (D) 10000 P'/S
Last Answer : (A) 1000 P'/S
Description : One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W. m-1. k-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is (A) 100 (B) 900 (C) 9000 (D) 10000
Last Answer : (D) 10000
Description : For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than __________ ppm. (A) 10000 (B) 5 (C) 500 (D) 1000
Last Answer : (B) 5
Description : Yield of blast furnace gas is about __________ Nm3 /ton of pig iron. (A) 300 (B) 2000 (C) 5000 (D) 10000
Last Answer : (B) 2000
Description : Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm. (A) < 1 (B) 10-100 (C) 100-200 (D) 100-1000
Last Answer : (A) < 1
Description : The catalytic cracking of heavier petroleum fraction is done to produce mainly (A) Gasoline (B) Asphalt (C) Diesel oil (D) Tar
Last Answer : (C) Diesel oil
Description : . Which of the following is used as a catalyst in fluidised bed catalytic cracking? (A) Silica-magnesia (B) Silica-alumina (C) Bentonite clays (D) All (A), (B) and (C
Last Answer : (D) All (A), (B) and (C
Description : Catalyst used in the catalytic cracking is (A) Silica-alumina (B) Silica gel (C) Vanadium pentoxide (D) Nickel
Last Answer : (A) Silica-alumina
Description : Name the endothermic reaction out of the following: (A) Catalytic cracking (B) Hydrocracking (C) Dehydrogeneration of Naphthene to produce aromatic (D) Catalytic polymerisation
Last Answer : (C) Dehydrogeneration of Naphthene to produce aromatic
Description : Which of the following processes consumes hydrogen? (A) Fluid catalytic cracking (B) Visbreaking (C) Propane deasphalting (D) None of these
Last Answer : (A) Fluid catalytic cracking
Description : The main use of heavy gas oil produced by the vacuum distillation unit is as a (A) Blending component for kerosene (B) Blending component for petrol (C) Feedstock for fluid catalytic cracking unit (D) None of these
Last Answer : (C) Feedstock for fluid catalytic cracking unit
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 : 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 : Pick out the correct statement pertaining to catalytic cracking. (A) With increase in the reactor pressure, octane number of gasoline decreases (B) With increase in the reactor temperature, gasoline yield decreases for a given ... with increase in the catalyst to oil ratio (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : In catalytic cracking, the (A) Gasoline obtained has a very low octane number (B) Pressure & temperature is very high (C) Gasoline obtained has very high aromatic content (D) Gasoline obtained has very high amount of gum forming compounds
Last Answer : (C) Gasoline obtained has very high aromatic content
Description : Commercially ethylene is produced from naphtha by (A) Catalytic cracking (B) Catalytic dehydrogenation (C) Pyrolysis (D) Hydrocracking
Last Answer : (D) Hydrocracking
Description : Tolerable concentration of toxic carbon monoxide in atmospheric air is about __________ ppm. (A) 50 (B) 1000 (C) 5000 (D) 10000
Last Answer : (A) 50
Description : A gas is termed as non-toxic, if its maximum permissible concentration (TLV) ranges from __________ ppm. (A) 1000 to 2000 (B) 3000 to 6000 (C) 6000 to 9000 (D) 10000 to 100000
Last Answer : (D) 10000 to 100000
Description : The maximum head that can be developed by a single impeller is __________ ft. (A) 25 (B) 100 (C) 250-300 (D) 1000
Last Answer : (C) 250-300
Description : Energy to be supplied to the radioactive nucleus for the emission of a neutron is __________ MeV. (A) 0.8 (B) 7.8 (C) 200 (D) 10000
Last Answer : (A) 0.8
Description : A 100 kg flywheel having a radius of gyration of 1 m is rotating at 1000 rpm. The angular momentum of the flywheel about its axis of rotation, in kg m2/s is a.1000 b.107 dynes c.10000 d.10470 e.5235
Last Answer : d. 10470
Description : The birthrate measures the number of births during a year per – (1) 100 population (2) 1000 population (3) 10000 population (4) 100000 population
Last Answer : (2) 1000 population Explanation: The birth rate is typically the rate of births in a population over time. The rate of births in a population is calculated in several ways: live births ... techniques. The birth rate along with mortality and migration rate are used to calculate population growth.