Description : Flash point of diesel/kerosene (>50°C) is determined by the (A) Abel apparatus (B) Pensky-Martens apparatus (C) Saybolt chromometer (D) None of these
Last Answer : (A) Abel apparatus
Description : Flash point of an oil is determined by the (A) Pensky Martens apparatus (B) Ramsbottom apparatus (C) Saybolt viscometer (D) Conradson apparatus
Last Answer : (A) Pensky Martens apparatus
Description : Flash point of atmospheric distillation residue is determined by __________ apparatus. (A) Pensky-Martens (closed cup type) (B) Abel (C) Cleveland (open cup type) (D) None of these
Last Answer : (C) Cleveland (open cup type)
Description : Pick out the wrong statement. (A) Pensky-Marten apparatus is used for determining flash points above 50°C (B) Characterisation factor of paraffinic crude oil is more than 12 (C) Abel ... An oil having high susceptibility to change in viscosity with temperature changes, has a high viscosity index
Last Answer : (D) An oil having high susceptibility to change in viscosity with temperature changes, has a high viscosity index
Description : Which one is used to determine the colour of petroleum products? (A) Colour comparator (B) Saybolt chromometer (C) Cleveland apparatus (D) None of these
Last Answer : (A) Colour comparator
Description : Abel apparatus is used for those oils, whose flash points are _______°F. (A) < 120 (B) > 120 (C) > 280 (D) 300-600
Last Answer : (A) < 120
Description : Pensky-Marten apparatus is used for those oils, whose flash points are __________ °F. (A) < 120 (B) > 120 (C) < 90 (D) 90-110
Last Answer : (B) > 120
Description : Flash point of motor gasoline may be around __________ °C. (A) 10 (B) 45 (C) 100 (D) 150
Last Answer : (B) 45
Description : Higher vapour pressure of gasoline indicates (A) Low flash point (B) High breathing loss (C) Both (A) and (B) (D) Neither (A) nor (B
Last Answer : (D) Neither (A) nor (B
Description : What is the difference between centromere and chromometer ?
Last Answer : Centromere 1. Undigested space is special in the colored chromosome. 2. Seen on all chromosomes. 3. Here the RNA is slightly coiled. 4. Each chromosome usually contains one. 5. Centromeres usually do ... more coiled. 4. Each chromosome contains a lot. 5. Each chromosome contains one or more genes.
Description : Nitrogen present in the flue gas is determined in the Orsat apparatus by absorbing it in (A) KOH (B) Ammoniacal cuprous chloride (C) Pyrogallol solution (D) None of these
Last Answer : (D) None of these
Description : Who among the following became the first woman to win the Abel prize 2019?
Last Answer : Karen Uhlenbeck
Description : How do I stop my Dr Martens from cracking?
Last Answer : I’ve heard about trying vasoline, but this is second-hand information.
Description : Do Doc Martens run small, narrow, etc.?
Last Answer : In my experience, there is nothing like actually trying them on. I’d suggest a visit to the mall to avoid having to return a present if they don’t fit like you thought they would.
Description : How to get rid of martens in the soil?
Last Answer : I would personally leave her there if I could. Otherwise, it is given to expel human hair, dog fur, shit from some predator. She doesn't like it if she plays radio there all the time.
Description : The boiling point of ammonia is (a) -100°C (b) -50°C (c) - 33.3°C (d) 33.3°C.
Last Answer : Ans: c
Description : By which number the quality of gasoline’ sample is determined? -General Knowledge
Last Answer : The answer is 'By its octane number'
Last Answer : answer:
Description : By which number the quality of gasoline’ sample is determined?
Last Answer : By its octane number
Description : Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butadiene rubber) are (A) 50°C and 3 - 4 kg/cm2 (B) 50°C and 1 kgf/cm2 (C) 250°C and 10 kgf/cm2 (D) 250°C and 1 kgf/cm
Last Answer : (A) 50°C and 3 - 4 kg/cm
Description : The outlet temperature of cooling water in a heat exchanger is generally not allowed to exceed above 50°C in industrial practice mainly to avoid (A) Its evaporation loss (B) Excessive corrosion (C) Uneconomic LMTD (D) Decrease in heat exchanger efficiency
Last Answer : (B) Excessive corrosion
Description : Hot water (0.01 m3 /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m3 /min) of density 800 kg/m3 and specific heat of ... mean temperature difference in °C is approximately (A) 32 (B) 37 (C) 45 (D) 50
Last Answer : (A) 32
Description : Process conditions in fermentator used for production of penicillin is (A) 25°C, 2 atm (B) 50°C, l0 atm (C) 30°C, 200 mm Hg (absolute) (D) 90°C, 45 atm
Last Answer : (A) 25°C, 2 atm
Description : A closed system is cooled reversibly from 100°C to 50°C. If no work is done on the system (A) its internal energy (U) decreases and its entropy (S) increases (B) U and S both decreases (C) U decreases but S is constant (D) U is constant but S decreases
Last Answer : (B) U and S both decreases
Description : Which of the following is not a reversible process? (A) Expansion of an ideal gas against constant pressure (B) Atmospheric pressure vaporisation of water at 100°C (C) Solution of NaCl in water at 50°C (D) None of these
Last Answer : C) Solution of NaCl in water at 50°C
Description : In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C. (A) 20 (B) 60 (C) 120 (D) ∞
Last Answer : (D) ∞
Description : Lumirhodopsin is stable only at a temperature below (A) –35°C (B) –40°C (C) –45°C (D) –50°C
Last Answer : Answer : D
Description : Lumirhodopsin is stable only at temperature below (A) –10°C (B) –20°C (C) –40°C (D) –50°C
Description : Unless it can be shown that a 45°C ambient temperature will not be exceeded, motors within a machinery space must be designed for an ambient temperature of _____________. A. 45°C B. 50°C C. 55°C D. 60°C
Last Answer : Answer: B
Description : The life expectancy of electrical insulation, is approximately halved for an increased operating temperature of _______________. A. 10°C B. 25°C C. 50°C D. 100°C
Last Answer : Answer: A
Description : The change in temperature of a body is 50°C. What is the change on Kelvin scale?
Last Answer : 50 K
Description : The figure below shows three steps (A, B, C) of Polymerase Chain Reaction (PCR). Select the option giving correct identification together with what it represents? A. B. C ds DNA 3 5 5 3 ... - extension in the presence of heat stable DNA polymerase (d) A - annealing with two sets of primers
Last Answer : (c) C - extension in the presence of heat stable DNA polymerase
Description : Volatile oil are those oil which can evaporate at : a. 25°C b. 40°C c. 50°C d. 65°C
Last Answer : 25°C
Description : Thermophilic micro-organism grow well at temperature– 1) 10°C – 20°C 2) 20°C – 40°C 3) 50°C – 60°C 4) 5°C – 7°C
Last Answer : 3) 50°C – 60°C
Description : Which of the following are optimum temperature conditions for making benzenediazonium chloride from aniline? (a) 0°C to 10°C (b) 20°C to 25°C (c) 30°C to 40°C (d) 45°C to 50°C
Last Answer : 0°C to 10°C
Description : A steel rod of sectional area 250 sq. mm connects two parallel walls 5 m apart. The nuts at the ends were tightened when the rod was heated to 100°C. If steel = 0.000012/C°, Esteel = 0.2 MN/mm2 , the ... N/mm2 (B) 100 N/mm2 (C) 120 N/mm2 (D) 150 N/mm2 Answer: Option
Last Answer : (C) 120 N/mm
Description : On inspecting a completed weld which has charpy impact requirements some small, smooth, shallow areas of undercut have been found
Last Answer : d) Only allow the welder to cosmetically blend out the undercut
Description : The turn-off time of a thyristor is 30 is at 50°C. What is its turn-off time at 100°C ?
Last Answer : The turn-off time of a thyristor is 30 is at 50°C. What is its turn-off time at 100°C ? 60 microsecond
Last Answer : If a D.C. motor designed for 40°C ambient temperature is to be used for 50°C ambient temperature, then the motor is to be derated by a factor recommended by manufacturer and select the next higher H.P. motor.
Description : True boiling point apparatus is used for the (A) Determination of characterisation factor (B) Evaluation of oil stocks (C) Determination of true vapour pressure (D) None of these
Description : Reid vapour pressure of gasoline is the measure of its (A) Pour point (B) Cloud point (C) Vapour locking tendency (D) Carbon residue
Last Answer : (C) Vapour locking tendency
Description : Octane number of gasoline is a measure of its (A) Resistance to knock (B) Ignition delay (C) Ignition temperature (D) Smoke point
Last Answer : (A) Resistance to knock
Description : Aniline point is a property of the (A) Diesel (B) LPG (C) Naphtha (D) Gasoline
Last Answer : (C) Naphtha
Description : Phenols are added in gasoline to (A) Improve the octane number (B) Act as an antioxidant (C) Reduce its viscosity (D) Increase its pour point
Last Answer : (B) Act as an antioxidant
Description : Tetra-ethyl lead is added in gasoline to (A) Increase its smoke point (B) Reduce gum formation (C) Reduce the pour point (D) Increase its octane numbe
Last Answer : (D) Increase its octane numbe
Description : Which of the following has the lowest flash point of all? (A) Diesel (B) Kerosene (C) Petrol
Last Answer : (C) Petrol