Description : Acute danger to human life (i.e. death) exists, if the concentration of CO2 in atmospheric air exceeds __________ percent (by volume). (A) 1 (B) 3 (C) 7 (D) 20
Last Answer : (D) 20
Description : Presence of carbon monoxide in atmosphere produced by decomposition of chlorophyll and haemoglobin breakdown of some animals, beyond TLV (>50 ppm) (A) Acts as a green house gas thereby raising earth's ... (B) Causes asphyxia (C) Causes increase in sea level (D) Enhances the green house effect
Last Answer : (B) Causes asphyxia
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 : Maximum allowable concentration of CO2 in air for safe working is __________ ppm (parts per million). (A) 50 (B) 1000 (C) 2000 (D) 5000
Last Answer : (D) 5000
Description : Which of the following causes death by asphyxiation, if its presence inatmospheric air exceeds maximum allowable concentration (i.e. > 50 ppm)? (A) Benzopyrene (B) Peroxyacetyl nitrate (C) Carbon monoxide (D) Sulphur dioxide
Last Answer : (C) Carbon monoxide
Description : From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm. (A) 5 (B) 50 (C) 500 (D) 5000
Last Answer : (A) 5
Description : Death may occur, when SO2 concentration in atmospheric air exceeds __________ ppm. (A) 20 (B) 100 (C) 400 (D) 200
Last Answer : (C) 400
Description : In glycoproteins the carbohydrate is in the form of disaccharide units, the number of units are (A) 50–100 (B) 200–300 (C) 400–500 (D) 600–700
Last Answer : Answer : D
Description : The average concentration of carbon dioxide in the atmosphere is : (A) 0.03 ppm (B) 30 ppm (C)0.3 ppm (D) 300 ppm
Last Answer : (B) 30 ppm
Last Answer : (D) 300 ppm
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 : Which type of intermolecular forces exists among the following molecules? (a) H2S molecules (b) H2O (c) Cl2 and CCl4 (d) SiH4 (e) Helium (f) He atoms and HCl molecules
Last Answer : Ans. (a) Dipole-Dipole interactions. (b)H-Bond. (c)Dispersion forces. (d)Dispersion forces. (e)Dispersion forces. (f)Induced dipole-dipole interactions.
Description : Threshold Limit Value (TLV) is the maximum allowable concentration (i.e. safe limit) of pollutants in air. Safe limit for SO2 in air is __________ ppm. (A) 5 (B) 500 (C) 1000 (D) 2000
Description : When the concentration of SO2 in air is greater than __________ ppm, it gives a pungent smell. (A) 0.01 (B) 0.1 (C) 1 (D) 4
Last Answer : (D) 4
Description : Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about __________ ppm (parts per million). (A) 0.002 (B) 0.2 (C) 1.2 (D) 4.8
Last Answer : (B) 0.2
Description : Normal quantity of urobilinogen excreted in the feces per day is about (A) 10–25 mg (B) 50–250 mg (C) 300–500 mg (D) 700–800 mg FATS AND FATTY ACID METABOLISM 79
Last Answer : Answer : B
Description : During a period 17, 500 labour hours were worked at a standard cost of Rs 6.50 per hour. The labour efficiency variance was Rs 7,800 favourable. How many standard hours were produced? (a) 1,200 (b) 16,300 (c) 17,500 (d) 18,700
Last Answer : (d) 18,700
Description : Storage life of vegetables increased by the use of GA spray at harvesting time a. 50 ppm b. 100 ppm c. 200 ppm d. None of above
Last Answer : 50 ppm
Description : The water produced during metabolic reactions in an adult is about (A) 100 ml/day (B) 300 ml/day (C) 500 ml/day (D) 700 ml/day
Description : Piston speed for high speed engine is (a) 300-500 m/min (b) 100-300 m/min (c) 500-700 m/min (d) >700m/min
Last Answer : (a) 300-500 m/min
Description : The normal serum of concentration of copper in mg/100 ml varies between (A) 0–5 (B) 50–100 (C) 100–200 (D) 200–300
Last Answer : Answer : C
Description : H2S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H2S ... by, y = 5x + 0.001 is (A) 2.0 (B) 1.56 (C) 1.0
Last Answer : (A) 2.0
Description : Threshold limit value (TLV) of CO in air is __________ ppm. (A) 5 (B) 50 (C) 2000 (D) 5000
Last Answer : (B) 50
Description : Safe limit' called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the (A) Industrial chimney exhaust (B) Automobiles exhaust (C) Photochemical reaction in polluted atmosphere (D) Burning of domestic fuel
Last Answer : (B) Automobiles exhaust
Description : If carbon monoxide content in atmospheric air exceeds __________ ppm, death is bound to occur. (A) 50 (B) 500 (C) 1000 (D) 3000 (i.e. 0.3%
Last Answer : (D) 3000 (i.e. 0.3%
Description : TLV of ozone (O3 ) and phosgene (COCl2 ) in air is __________ ppm. (A) 0.1 (B) 25 (C) 100 (D) 1000
Last Answer : (A) 0.1
Description : TLV of ammonia, nitrogen dioxide and phenol vapor in air is __________ ppm. (A) 5 (B) 100 (C) 1000 (D) 2000
Description : If the depletion of oxygen is found to be 5 ppm after incubating a 2.5% solution of sewage sample for 5 days at 21°C, B.O.D. of the sewage is A. 50 ppm B. 100 ppm C. 150 ppm D. 200 ppm
Last Answer : ANS: D
Description : 37. Euro –II norm stipulate ‘sulphur’ level in diesel and petrol to be ... e) 400 ppm in diesel and 150 ppm in petrol. f) 350 ppm in diesel and 180 ppm in petrol. g) 100 ppm in diesel and 50 ppm in petrol. h) 350 ppm in diesel and 150 ppm in petrol.
Last Answer : h) 350 ppm in diesel and 150 ppm in petrol.
Description : 17. Euro –II norm stipulate ‘sulphur’ level in diesel and petrol to be ... a) 400 ppm in diesel and 150 ppm in petrol. b) 350 ppm in diesel and 180 ppm in petrol. c) 100 ppm in diesel and 50 ppm in petrol. d) 350 ppm in diesel and 150 ppm in petrol.
Last Answer : d) 350 ppm in diesel and 150 ppm in petrol.
Description : Solid type cables are considered unreliable beyond 66 kV because (a) insulation may melt due to higher temperature (b) skin effect dominates on the conductor (c) of corona loss between conductor and sheath material (d) there is a danger of breakdown of insulation due to the presence of voids
Last Answer : (d) there is a danger of breakdown of insulation due to the presence of voids
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 : On prolonged exposure to high concentration of carbon monoxide (> 5000 ppm), man dies because (A) Of clotting of blood (B) Of jamming of respiratory tract (C) It forms carboxyhemoglobin by combining ... it incapable of absorbing oxygen (D) It forms CO2 by combining with oxygen present in the blood
Last Answer : (C) It forms carboxyhemoglobin by combining with haemoglobin of blood, thereby making it incapable of absorbing oxygen
Description : What do you do if you believe a violation of a safety or health standard or an imminent danger situation exists in your workplace?
Last Answer : Feel Free to Answer
Description : Low temperature carbonisation of coal takes place at __________ °C. (A) 300 (B) 1100 (C) 700
Last Answer : (C) 700
Description : The temperature in the calcium carbide furnace is __________ °C. (A) 200-300 (B) 700-850 (C) 2000-2200 (D) 4000-4500
Last Answer : (C) 2000-2200
Description : Low temperature carbonisation of coal takes place at __________ °C. (A) 300 (B) 1100 (C) 700 (D) 900
Description : The present level of carbon-dioxide in atmosphere is : (A)190 ppm (B) 295 – 300 ppm (C) 420 – 460 ppm (D) 490 ppm
Last Answer : (B) 295 – 300 ppm
Description : Calculate the value of closing stock from the following according to Weighted Average method: 1st January, 2014: Opening balance: 50 units @ Rs. 4 Receipts: 5th January, 2014: 100 units @ Rs. 5 12th January, 2014: 200 units ... 2014: 150 units (a) Rs. 765 (b) Rs. 805 (c) Rs. 786 (d) Rs. 700
Last Answer : (c) Rs. 786
Description : Calculate the value of closing stock from the following according to LIFO method: 1st January, 2014: Opening balance: 50 units @ Rs. 4 Receipts: 5th January, 2014: 100 units @ Rs. 5 12th January, 2014: 200 units @ Rs. 4.50 ... , 2014: 150 units (a) Rs. 765 (b) Rs. 805 (c) Rs. 786 (d) Rs. 700
Last Answer : (b) Rs. 805
Description : Calculate the value of closing stock from the following according to FIFO method: 1st January, 2014: Opening balance: 50 units @ Rs. 4 Receipts: 5th January, 2014: 100 units @ Rs. 5 12th January, 2014: 200 units @ Rs. 4.50 ... , 2014: 150 units (a) Rs. 765 (b) Rs. 805 (c) Rs. 786 (d) Rs. 700
Last Answer : (a) Rs. 765
Description : If air contains `gt` 100 ppm of `O_(3)` , it causes
Last Answer : If air contains `gt` 100 ppm of `O_(3)` , it causes A. headache and nausca B. hyper tension C. Anoxia D. Hyper thyrodisim
Description : Pick out the wrong statement: (A) Chemical reactions with high activation energy are very temperature sensitive (B) A flat velocity profile exists in a plug flow reactor (C) The residence ... D) Half life of a reaction increases with increased initial concentration for reaction orders more than one
Last Answer : (C) The residence time for all the elements of fluid in case of a P.F.R. need not be same
Description : A species is said to be _______ when no member of the species exists or is presumed beyond reasonable doubt to have disappeared. a) extinct b)endangered c)vulnerable d)none
Last Answer : a) extinct
Description : A patient of acute myocardial infarction has been brought to the ICU. What is the time lapse since symptom onset beyond which you will not consider instituting thrombolytic therapy: A. 3 hours B. 6 hours C. 16 hours D. 24 hours
Last Answer : C. 16 hours
Description : A 500 g toothpaste sample has 0.4 g fluoride concentration. The fluoride concentration in terms of ppm will be
Last Answer : A 500 g toothpaste sample has 0.4 g fluoride concentration. The fluoride concentration in terms of ppm will be A. 200 B. 400 C. 500 D. 800
Description : What is the concentration of solution in ppm if 2 kg of 2,4-D is mixed with 1000 lit of water?
Last Answer : Ans.2000
Description : The nitrate concentration in domestic water supplies, is generally limited to (A) 10 ppm (B) 15 ppm (C) 30 ppm (D) 45 ppm
Last Answer : (D) 45 ppm
Description : . Ethanolamine is an absorbent used for the removal of __________ from air/gas. (A) HF (B) SO2 (C) H2S (D) Both (B) & (C)
Last Answer : (D) Both (B) & (C)
Description : During pregnancy, the following should be added to the calculated energy requirement: (A) 300 kcal/day (B) 500 kcal/day (C) 700 kcal/day (D) 900 kcal/day
Last Answer : Answer : A