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 : 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 : I kgf/cm2 is equal to (a) 760 mm Hg (b) zero mm Hg (c) 735.6 mm Hg (d) 1 mm Hg (e) l00 mm Hg.
Last Answer : Answer : c
Description : A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0°C, 760 mm Hg) will be __________ litres. (A) 448 (B) 224 (C) 22.4 (D) Data insufficient; can't be computed
Last Answer : (A) 448
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
Last Answer : ANS: C
Description : 95% (by volume) of LPG at 760 mm Hg pressure will evaporate at__________ °C. (A) 2 (B) -40 (C) 30 (D) 55
Last Answer : (A) 2
Description : At 25°C and 760 mm of Hg pressure a gas occupies 600 mL volume.
Last Answer : At 25°C and 760 mm of Hg pressure a gas occupies 600 mL volume. What will be its pressure at ... temperature is 10°C and volume of the gas 640 mL ?
Description : Barometric pressure is equal to (a) 760 mm Hg (b) zero mm Hg (c) 735.6 mm Hg (d) 1 mm Hg (e) 100mm Hg.
Last Answer : Answer : a
Description : Very low pressure is expressed in microns (μ), which is equal to__________ mm of Hg column (absolute) at 0°C. (A) 0.0001 (B) 0.001 (C) 0.01 (D) 0.1
Last Answer : (B) 0.001
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 : 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 gas occupies a volume of 0.2 L at 176 mm Hg. What volume will the gas occupy at 760 mm Hg?
Last Answer : 0.05 L
Description : The average temperature of sewage in India, is A. 10°C B. 15°C C. 20°C D. 25°C
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 : Operating temperature and pressure in catalytic reforming is about (A) 1-5 Kgf/cm2 & 200°C (B) 15-45 Kgf/cm2 & 450-550°C (C) 50 - 75 kgf/cm2 & 600 - 800°C (D) 5-10 kgf/cm2 & 150 - 250°C
Last Answer : (B) 15-45 Kgf/cm2 & 450-550°C
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 : The temperature of the top of a frozen lake is – 15°C. What is the temperature of the water in the lake in contact with the ice layer? (a) 0°C (b) 4°C (c) –15°C (d) –7.5°C
Last Answer : Ans:(a)
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 : Low pressure Zeigler process of polythene manufacture (A) Employs a pressure of 30 kgf/cm2 (B) Achieves an yield of 95-98% based on ethylene (C) Produces very low density polythene (D) Does not use any catalyst for polymerisation
Last Answer : (B) Achieves an yield of 95-98% based on ethylene
Description : Though increased pressure has a retarding effect on cracking reaction, yet in actual process, a positive pressure of 10-15 kgf/cm2 is maintained during cracking mainly to (A) Increase the yield of ... coke formation (C) Enhance the octane number of gasoline (D) Reduce gum content in gasoline
Last Answer : (B) Suppress coke formation
Description : Pressure of CO2 gas (which is a coolant) in the Calder-Hall nuclear reactor is __________ kgf/cm2 . (A) 0.2 (B) 7 (C) 35 (D) 50
Last Answer : (B) 7
Description : __________ pump is the most suitable device for discharging a liquid against a pressure of ≥ 1500 kgf/cm2 . (A) Centrifugal (B) Piston (C) Plunger (D) Vane
Last Answer : (C) Plunger
Description : Which of the following situations can be approximated to a steady state heat transfer system? (A) A red hot steel slab (having outside surface temperature as 1300°C) exposed to the atmospheric air at ... flowing at the rate of 6 Kg/minute through a copper pipe exposed to atmospheric air at 35°C
Last Answer : (B) 10 kg of dry saturated steam at 8 kgf/cm2 flowing through a short length of stainless steel pipe exposed to atmospheric air at 35°C
Description : Date growth does not cease if temperature does not fall below: a. 0°C. b. 10°C c. 18°C d. 20°C
Last Answer : 18°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 : 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 : A standard ice point temperature corresponds to the temperature of (a) water at 0°C (b) ice at - 4°C (c) mixture of ice, water and vapour under equilibrium conditions under NTP conditions (d) mixture of ice and water Under equilibrium conditions.
Last Answer : Ans: D
Description : One barometric pressure or 1 atmospheric pressure is equal to (a) 1 kgf/cnr2 (b) 1.033 kgf/cm2 (c) 0 kgf/cm2 (d) 1.0197 kgf/cm2 (e) 100 kgf/cm2.
Description : The existence of a gas is vanished atA. N.T.P. B. At any temperature C. Absolute zero D. 0°C E. None of the above
Last Answer : C. Absolute zero
Description : Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is (A) 7 kgf/cm2 and 70 °C (B) 1000 kgf/cm2 and 100°C (C) 7 kgf/cm2 and 700°C (D) 1 kgf/cm2 (gage) and 70°C
Last Answer : (A) 7 kgf/cm2 and 70 °C
Description : Operating condition in the electrical dehydrators for crude oil is about (A) 6.5 kgf/Cm2 & 95°C (B) 1 atm. & 110 °C (C) 20 kgf/cm2 & 110°C (D) 50 atm. and 150°C
Last Answer : (A) 6.5 kgf/Cm2 & 95°C
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 : Choose the most suitable antihypertensive drug for a 45-year-old male company executive who has a travelling job. His blood pressure is 160/100 mm Hg, and he is a diabetic ... → rebound hypertension. Hydrochlorothiazide: May worsen diabetes; more likely to produce weakness, fatigue and impotenc
Last Answer : B. Enalapril
Description : Normal blood pressure reading of an adult human : (1) 80/120 mm Hg (2) 120/80 mm Hg (3) 130/90 mm Hg (4) 160/95 mm Hg
Last Answer : (2) 120/80 mm Hg Explanation: According to the American Heart Association (AHA), normal blood pressure is a systolic pressure of less than 120 millimeters of mercury (mm Hg) and a diastolic ... . Having a blood pressure greater than 140/ 90 mm Hg is considered high blood pressure or hypertension.
Description : Normal blood pressure of man is – (1) 80/120 mm Hg (2) 90/140 mm Hg (3) 120/160 mm Hg (4) 85/150 mm Hg
Last Answer : (1) 80/120 mm Hg Explanation: Normal blood pressure is considered to be at or below 120 over 80 (120/80).
Description : Normal blood pressure of man is - (1) 80/120 mm (2) 90/140 mm Hg (3) 120/160 mm Hg (4) 85/120 mm Hg
Last Answer : (1) 80/120 mm Explanation: Normal blood pressure is considered to be at or below 120 over 80 (120/80). Normally, blood pressures are usually categorized into three groups: low (90/60 or*lower), high ( 140 / 90 or higher), and normal (values above 90/60 and below 130/80).
Description : When measuring the blood pressure in each of the patient's arms, the nurse recognizes that in the normal adult, the pressures a) differ no more than 5 mm Hg between arm pressures. Normally, in ... . The left arm pressure is not anticipated to be higher than the right as a normal anatomical variant.
Last Answer : a) differ no more than 5 mm Hg between arm pressures. Normally, in the absence of disease of the vasculature, there is a difference of no more than 5 mm Hg between arm pressures.
Description : When the nurse observes that the patient's systolic blood pressure is less than 80-90 mm Hg, respirations are rapid and shallow, heart rate is over 150 beats per minute, and ... d) Irreversible In refractory or irreversible shock, the patient requires complete mechanical and pharmacologic support.
Last Answer : a) Compensatory In compensatory shock, the patient’s blood pressure is normal, respirations are above 20, and heart rate is above 100 but below 150.
Description : Which stage of shock is best described as that stage when the mechanisms that regulate blood pressure fail to sustain a systolic pressure above 90 mm Hg? a) Progressive In the progressive stage of ... which organ damage is so severe that the patient does not respond to treatment and cannot survive.
Last Answer : a) Progressive In the progressive stage of shock, the mechanisms that regulate blood pressure can no longer compensate, and the mean arterial pressure falls below normal limits.
Description : According to the classification of hypertension diagnosed in the older adult, hypertension that can be attributed to an underlying cause is termed a) secondary. Secondary hypertension may be caused by a tumor of ... mm Hg and the diastolic measurement is normal or near normal (less than 90 mm Hg).
Last Answer : a) secondary. Secondary hypertension may be caused by a tumor of the adrenal gland (e.g., pheochromacytoma).
Description : A 40-year-old politician suffered from attacks of chest pain diagnosed as angina pectoris. He had a tense personality, resting heart rate was 96/min, blood pressure 170/104 mm Hg, but ... antihypertensive for initial therapy in his case: A. Nifedipine B. Hydrochlorothiazide C. Atenolol D. Methyldopa
Last Answer : C. Atenolol
Last Answer : 120/80 mm Hg
Description : Normal blood pressure of man is (1) 80/120 mm Hg (2) 90/140 mm Hg (3) 120/160 mm Hg (4) 85/120 mm Hg
Last Answer : 80/120 mm Hg
Description : The principal stresses at a point are 100, 100 and -200 kgf/cm2 , the octahedral shear stress at the point is: (A) 100 kg/cm2 (B) 200 kg/cm2 (C) 300 kg/cm2 (D) 400 kg/cm2
Last Answer : (A) 100 kg/cm2
Description : In troposphere (the weather domain), the temperature 't' at height 'h' above the spa level in metres is given by (where, temperature at sea level is 15°C and t is in °C.) (A) t = 15 - 0.0065h (B) t = 15 + 0.0065h (C) t = 0.0035h -15 (D) t = 15 - 0.0035h
Last Answer : (A) t = 15 - 0.0065h
Description : The volume of a gas at `0^(@)C` and 760 mm pressure is 22.4 c c. The no . Of molecules present in this volume is
Last Answer : The volume of a gas at `0^(@)C` and 760 mm pressure is 22.4 c c. The no . Of molecules present in this volume is ... `10^(-5)N_(A)` D. `10^(-2)N_(A)`
Description : The atmospheric pressure at sea level is (A) 103 kN/m2 (B) 10.3 m of water (C) 760 mm of mercury (D) All of these
Last Answer : Answer: Option D
Description : Boiler draught of 10 mm water column is equivalent to (A) 1 kgf/m2 (B) 10 kgf/m2 (C) 10 kgf/mm2 (D) 1 kgf/mm2
Last Answer : (B) 10 kgf/m2
Description : In troposphere (the weather domain), the temperature 't' at height 'h' above the sea level in metres is given by (where, temperature at sea level is 15°C and t is in °C.) (A) t = 15 - 0.0065 h (B) t = 15 + 0.0065 h (C) t = 0.0035 h - 15 (D) t = 15 - 0.0035 h
Last Answer : (A) t = 15 - 0.0065 h