Description : Which of the following is the unit of kinematic viscosity? (A) Pascal (B) Poise (C) Stoke (D) Faraday
Last Answer : Answer: Option C
Description : The unit of dynamic viscosity in S.I. units is (A) N-m/s2 (B) N-s/m2 (C) Poise (D) Stoke
Last Answer : Answer: Option B
Description : The kinematic viscosity of an oil (in stokes) whose specific gravity is 0.95 and viscosity 0.011 poise, is (A) 0.0116 stoke (B) 0.116 stoke (C) 0.0611 stoke (D) 0.611 stoke
Last Answer : Answer: Option A
Description : The kinematic viscosity (in stoke) and the absolute/dynamic viscosity (in poise) are the same for __________ at room temperature. (A) Air (B) Water (C) Mercury (D) Alcohol
Last Answer : (B) Water
Description : N. second/m2 is (A) The S.I. unit of dynamic viscosity (B) The S.I. unit of kinematic viscosity (C) Equivalent to one poise (D) Equivalent to one stoke
Last Answer : (A) The S.I. unit of dynamic viscosity
Description : Poise is converted into stoke by (A) Multiplying with density (gm/c.c) (B) Dividing by density (gm/c.c) (C) Multiplying with specific gravity (D) Dividing by specific gravity
Last Answer : (B) Dividing by density (gm/c.c)
Description : Reynolds number for water flow through a tube of I.D. 5 cm is 1500. If a liquid of 5 centipoise viscosity and 0.8 specific gravity flows in the same pipe at the same velocity, then the pressure drop will (A) Increase (B) Decrease (C) Remain same (D) Data insufficient to predict pressure drop
Last Answer : (A) Increase
Description : Which of the following agitators having a large blade area, rotating at slow speed is used for mixing high viscosity liquids (> 50000 centipoise)? (A) Propeller (B) Helical screw (C) Flat blade turbine (D) Curved blade turbine
Last Answer : (B) Helical screw
Description : If the specific gravity of a soil particle of 0.05 cm diameter is 2.67, its terminal velocity while settling in distilled water of viscosity, 0.01 poise, is (A) 0.2200 cm/sec (B) 0.2225 cm/sec (C) 0.2250 cm/sec (D) 0.2275 cm/sec
Last Answer : (D) 0.2275 cm/sec
Description : Poise is the unit of (A) Surface tension (B) Capillarity (C) Viscosity (D) Shear stress in fluids
Description : Stoke is the unit of (A) Kinematic viscosity in C. G. S. units (B) Kinematic viscosity in M. K. S. units (C) Dynamic viscosity in M. K. S. units (D) Dynamic viscosity in S. I. units
Description : A dash pot consists of a cylinder 10 cm in diameter in which slides a piston 12 cm long having a radial clearance of 1 mm. The cylinder is filled with oil having a viscosity of 1 poise. What will be the resistance offered ... with a velocity of 3 cm/sec a.1090 kg b.100 kg c.10900 kg d.10 kg e.50 kg
Last Answer : c. 10900 kg
Description : A particle A of diameter 10 microns settles in an oil of specific gravity 0.9 and viscosity 10 poise under Stoke's law. A particle B with diameter 20microns settling in the same oil will have a settling velocity (A) ... ) One fourth as that of A (C) Twice as that of A (D) Four times as that of A
Last Answer : (B) One fourth as that of A
Description : One poise (unit of absolute/dynamic viscosity) is equivalent to one (A) gm/cm2 . sec (B) gm/cm. sec (C) cm2 /sec (D) m2 /sec
Last Answer : (B) gm/cm. sec
Description : A Poise is the unit of measure of which of the following? w) pressure x) viscosity y) force z) mass
Last Answer : ANSWER: X -- VISCOSITY
Description : . One stoke (unit of kinematic viscosity) is equivalent to (A) 1 cm2 /second (B) 1 m2 /second (C) 1 gm/cm. second (D) 1 kg. m/second
Last Answer : (A) 1 cm2 /second
Description : 1 centistoke is equal to __________ Redwood I seconds. (A) 1 (B) 4.08 (C) 0.408 (D) 40.8
Last Answer : (B) 4.08
Description : One poise is equal to (A) 0.1 N-s/m2 (B) 1 N-s/m2 (C) 10 N-s/m2 (D) 100 N-s/m2
Description : One stoke is equal to (A) 10-2 m2 /s (B) 10-3 m2 /s (C) 10-4 m2 /s (D) 10-6 m2 /s
Description : The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is approximately (A) 5 mm (B) 10 mm (C) 20 mm (D) 30 mm
Last Answer : Answer: Option D
Description : The standard B.O.D. at 20°C, is taken for the consumption in (A) 2 days (B) 3 days (C) 4 days (D) 5 days
Last Answer : (D) 5 days
Description : The Manufacturer of aeration devices reports the oxygen transfer rate of the device obtained through laboratory tests carried under standard conditions. Such standard condition are : (a) Wastewater at zero DO, 25°C and 760 mm ... DO, 20°C and 760 mm Hg (d) Wastewater at zero DO, 0°C and 700 mm Hg
Last Answer : (c) Tapwater at zero DO, 20°C and 760 mm Hg
Description : (Visual) Identify this gentleman, caricatured here by Al Hirschfeld, known for what Time magazine called “a sense of personal style, a combination of cheek and chic, pose and poise”.
Last Answer : Noël Coward.
Description : Is "Polar Vortex" a new term to stoke up weather hysteria?
Last Answer : 20 years from now it will be called a “Solar Ice Stream”.
Description : In what country was Ben Stoke born ?
Last Answer : Ben Stock was born in New Zealand.
Description : What is the Significance of experiment of stoke law?
Last Answer : Need answer
Description : A two stroke engine has a speed of 750 rpm. A four stroke engine having an identical cylinder size runs at 1500 rpm. The theoretical output of the two stroke engine will (a) Be twice that of the four stroke ... ) Be the same as that of the four stoke (d) Depend upon whether it is a CI or SI engine
Last Answer : Ans :c
Description : Which of the following law deals with hydraulic gradient in soil a. Fick law b. Stoke law c. Darcy law d. Liebig law
Last Answer : c. Darcy law
Description : Pick out the wrong conversion of absolute & kinematic viscosities. (A) 1 stoke = 1 cm2/sec (B) 1 N.sec/m2 = 10 paise (C) 1 stoke = 1 m2/sec (D) 1 m2/sec = 104 stokes
Last Answer : (C) 1 stoke = 1 m2/sec
Description : Prandtl number for water at 20°C is about (A) 7 (B) 70 (C) 0.7
Last Answer : (A) 7
Description : A long iron rod initially at a temperature of 20°C has one end dipped in boiling water (100°C) at time, t = 0. The curved surface of the rod is insulated so that heat conduction is one dimensional in the axial direction. The ... = 283 s (B) t = 356 s (C) t = 400 s (D) t = 800 s
Last Answer : (D) t = 800 s
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 : If a certain amount of dry ice is mixed with same amount of water at 80°C, the final temperature of mixture will be (a) 80°C (b) 0°C (c) 40°C (d) 20°C (e) 60°C.
Last Answer : Answer : b
Description : Calculate the volume of 1 mole of a gas at exactly 20°C at a pressure of 101.35 kPa.
Last Answer : Calculate the volume of 1 mole of a gas at exactly 20°C at a pressure of 101.35 kPa.
Description : Lumirhodopsin is stable only at temperature below (A) –10°C (B) –20°C (C) –40°C (D) –50°C
Last Answer : Answer : D
Description : Fats are solids at (A) 10°C (B) 20°C (C) 30°C (D) 40°C
Last Answer : Answer : B
Description : The bacteria which are able to grow at 0°C but which grow at 20°C to 30°C, are known as a. Psychrophiles b. Facultative psychrophiles c. Average psychrophiles d. Mesophiles
Last Answer : Ans: C
Description : Standard air is the: a. Mass of 1 cubic meter of dry air at 20°C and atmospheric pressure b. Mass of a cubic meter of air at atmospheric conditions c. Volume of air at ambient temperature and atmospheric pressure ... pressure at sea level or 101.325 kPa e. Volume of 1 kg of air at 15°C and 100 kPa
Last Answer : Answer: D
Description : 3.0 ml of raw sewage is diluted to 300 ml. The D.O. concentration of the diluted sample at the beginning of the test was 8 mg/l. After 5 dayincubation at 20°C, the D.O. concentration was 5 mg/l. The BOD of raw sewerage is A. 100 mg/l B. 200 mg/l C. 300 mg/l D. 400 mg/l
Last Answer : ANS: C
Description : If the depletion of oxygen is found to be 2.5 mg/litre after incubating 2.5 ml of sewage diluted to 250 ml for 5 days at 20°C, B.O.D. of the sewage is A. 50 mg/l B. 100 mg/l C. 150 mg/l D. 250 mg/l
Last Answer : ANS: D
Description : If 2% solution of a sewage sample is incubated for 5 days at 20°C and depletion of oxygen was found to be 5 ppm, B.O.D. of the sewage is A. 200 ppm B. 225 ppm C. 250 ppm D. None of these
Description : The average temperature of sewage in India, is A. 10°C B. 15°C C. 20°C D. 25°C
Description : If a 2% solution of sewage sample is incubated for 5 days at 20°C and the dissolved oxygen depletion was found to be 8 mg/l. The BOD of the sewage is A. 100 mg/l B. 200 mg/l C. 300 mg/l D. 400 mg/l
Description : 5 days-biochemical oxygen demand (BOD5) is taken at a temperature of A. 0°C B. 15°C C. 20°C D. 25°C
Description : An insulation resistance reading is taken at 20°C and found to be 10 megohms. What would you expect the resistance reading to be at 40°C? A. 2.5 megohms B. 10 megohms C. 15 megohms D. 20 megohms
Last Answer : Answer: A
Description : Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are (A) 5°C and 1 kgf/cm2 (B) - 20°C and 1 kgf/cm2 (C) 0°C and 1 kgf/cm2 (D) 0°C and 3 kgf/cm
Last Answer : (A) 5°C and 1 kgf/cm
Description : Extractor temperature is maintained at -20°C in Edeleanu process to reduce the __________ of kerosene. (A) Smoke point (B) Paraffins (C) Aromatics (D) Naphthenes
Last Answer : (B) Paraffins
Description : A mixture of 10% C6H6 vapour in air at 25°C and 750 mm Hg has a dew point of 20°C. Its dew point at 30°C and 700 mm Hg will be around __________ °C. (A) 21.7 (B) 20 (C) 27.3 (D) 18.7
Last Answer : (D) 18.7
Description : A Fahrenheit thermometer indicates a temperature of ‘ 14°F. its corresponding reading on the Celsius scale will be -----? A. – 2O°C B. – 10°C (Answer) C. + 10°C D. + 20°C
Last Answer : B. – 10°C (Answer)
Description : Onion seeds can germinate at a temperature of : a. 0-1°C b. 1-5°C c. 5-11°C d. 15-20°C
Last Answer : 1-5°C