Upper safe limit of fluorine in water is (A) 0.4 ppm (B) 0.8 ppm (C) 1.2 ppm (D) 2 ppm

Upper safe limit of fluorine in water is (A) 0.4 ppm (B) 0.8 ppm (C) 1.2 ppm (D) 2 ppm
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Dental caries occur due to (A) Drinking water containing less than 0.2 ppm of fluorine (B) Drinking water containing greater than 1.2 ppm of fluorine (C) Drinking water containing high calcium (D) Drinking water containing heavy metals

Description : Dental caries occur due to (A) Drinking water containing less than 0.2 ppm of fluorine (B) Drinking water containing greater than 1.2 ppm of fluorine (C) Drinking water containing high calcium (D) Drinking water containing heavy metals

Last Answer : Answer : A

Fluorosis occurs due to (A) Drinking water containing less than 0.2 ppm of fluorine (B) Drinking water containing high calcium (C) Drinking water containing greater than 1.2 ppm of fluroine (D) Drinking water containing heavy metals

Description : Fluorosis occurs due to (A) Drinking water containing less than 0.2 ppm of fluorine (B) Drinking water containing high calcium (C) Drinking water containing greater than 1.2 ppm of fluroine (D) Drinking water containing heavy metals

Last Answer : Answer : C

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 : 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

Last Answer : (A) 5

Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per million (ppm). (A) Highly (B) Moderately (C) Extremely (D) Very extremely

Description : Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per million (ppm). (A) Highly (B) Moderately (C) Extremely (D) Very extremely

Last Answer : (B) Moderately

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

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

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

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

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

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

Tolerable limit of nitrogen oxides in air is __________ ppm. (A) 0.1 (B) 1 (C) 5 (D) 25

Description : Tolerable limit of nitrogen oxides in air is __________ ppm. (A) 0.1 (B) 1 (C) 5 (D) 25

Last Answer : (C) 5

The permissible and normal limit of EC, RSC, SAR (meq 1 –1 ) and Boron content (ppm)

Description : The permissible and normal limit of EC, RSC, SAR (meq 1 –1 ) and Boron content (ppm)

Last Answer : Ans.2–4, < 2.5, < 10 and 10,000 ha

Threshold limit value (TLV) of CO in air is __________ ppm. (A) 5 (B) 50 (C) 2000 (D) 5000

Description : Threshold limit value (TLV) of CO in air is __________ ppm. (A) 5 (B) 50 (C) 2000 (D) 5000

Last Answer : (B) 50

Maximum allowable concentration of CO2 in air for safe working is __________ ppm (parts per million). (A) 50 (B) 1000 (C) 2000 (D) 5000

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

Fluorosis is caused due to (A) Excessive intake of fluorine (B) Low intake of fluorine (C) Discoloration of the teeth due to low intake (D) All of these

Description : Fluorosis is caused due to (A) Excessive intake of fluorine (B) Low intake of fluorine (C) Discoloration of the teeth due to low intake (D) All of these

Last Answer : Answer : A

Meat is rich in all of the following except (A) Iron (B) Fluorine (C) Copper (D) Zinc

Description : Meat is rich in all of the following except (A) Iron (B) Fluorine (C) Copper (D) Zinc

Last Answer : Answer : B

Is there an upper age limit for a possible organ donor?

Description : Is there an upper age limit for a possible organ donor?

Last Answer : I want to say it's 60. A couple years ago, my wife and I went to a local fair where they registered people for Bone Marrow, and they told us then that they would keep our records on file ... t want it. I realize Marrow is different than organs, but I would guess the guidelines they use are similar.

If m is the mid-point and l is the upper class limit of a class in a continuous frequency distribution, then lower class limit of the class is -Maths 9th

Description : If m is the mid-point and l is the upper class limit of a class in a continuous frequency distribution, then lower class limit of the class is -Maths 9th

Last Answer : NEED ANSWER

If m is the mid-point and l is the upper class limit of a class in a continuous frequency distribution, then lower class limit of the class is -Maths 9th

Description : If m is the mid-point and l is the upper class limit of a class in a continuous frequency distribution, then lower class limit of the class is -Maths 9th

Last Answer : (b) Let x and y be the lower and upper class limit of a continuous frequency distribution. Now, mid-point of a class = (x + y)/2 = m [given] ⇒ x + y = 2 m =x + l = 2m [∴ y = l = upper class limit (given)] ⇒ x = 2 m-l Hence, the lower class limit of the class is 2m – l.

What is the upper limit of a dog's audibility ?

Description : What is the upper limit of a dog's audibility ?

Last Answer : 35000 Hz Dog auditory upper limit.

What is the upper age limit , to get long distance truck driver jobs?

Description : What is the upper age limit , to get long distance truck driver jobs?

Last Answer : Most people will not hire people under 18 and over the age of about 50 for truck driving jobs. They are looking for people who can stay awake, and get the job done. They do not want ... 40 years old. The age upper limit is unofficial but most companies prefer younger drivers to avoid accidents.

The upper limit of investment in plant and machinery for small-scale industries has been fixed currently at - (1) Rs. 35 lakhs (2) Rs. 45 lakhs (3) Rs. 60 lakhs (4) Rs. 1 crore

Description : The upper limit of investment in plant and machinery for small-scale industries has been fixed currently at - (1) Rs. 35 lakhs (2) Rs. 45 lakhs (3) Rs. 60 lakhs (4) Rs. 1 crore

Last Answer : (4) Rs. 1 crore Explanation: The upper limit of investment in plant and machinery for small-scale industries has been fixed at Rs. one crore.

What is the upper transaction limit of UPI system? A. 1 lakh B. 2 lakh C. 5 lakh D. 10 lakh E. No limit

Description : What is the upper transaction limit of UPI system? A. 1 lakh B. 2 lakh C. 5 lakh D. 10 lakh E. No limit

Last Answer : A. 1 lakh Explanation: The upper transaction limit of UPI is Rs.1 lakh.

An upper limit of oil content is limited to about __________ percent for achieving efficient and satisfactory level of wax sweating. (A) 5 (B) 15 (C) 40 (D) 60

Description : An upper limit of oil content is limited to about __________ percent for achieving efficient and satisfactory level of wax sweating. (A) 5 (B) 15 (C) 40 (D) 60

Last Answer : (C) 40

Mark the correct option relating to age limit a) For WLI & EA policies the insurant should not be less than 19 year an not more than 55 year on the date of next birthday b) For CWLA the upper age limit is 50 year c) The max age limit for 15 and 20 year AEA is 45 and 40 respectively d) Under Ugal suraksha policy age at entry of both the spouses should not be less than 21 year and not more than 45 year. e) All the above

Description : Mark the correct option relating to age limit a) For WLI & EA policies the insurant should not be less than 19 year an not more than 55 year on the date of next birthday b) For CWLA the upper age ... of both the spouses should not be less than 21 year and not more than 45 year. e) All the above

Last Answer : e) All the above

A simple steam engine receives steam from the boiler at 180˚C and exhausts directly into the air at 100˚C. What is the upper limit of its efficiency?  a. 11.28 %  b. 36.77 %  c. 20.36 %  d. 17.66 %

Description : A simple steam engine receives steam from the boiler at 180˚C and exhausts directly into the air at 100˚C. What is the upper limit of its efficiency?  a. 11.28 %  b. 36.77 %  c. 20.36 %  d. 17.66 %

Last Answer : 17.66 %

Maximum issue is a. the upper limit in thousands of dollars that teams can issue in stock this year. b. amount in thousands of dollars that teams wish to issue in stock. c. upper limit of stock that can be bought back in thousands of dollars. d. amount of stock, if any, to buy back. e. none of the above.

Description : Maximum issue is a. the upper limit in thousands of dollars that teams can issue in stock this year. b. amount in thousands of dollars that teams wish to issue in stock. c. upper limit of stock that can be ... thousands of dollars. d. amount of stock, if any, to buy back. e. none of the above.

Last Answer : a. the upper limit in thousands of dollars that teams can issue in stock this year.

The ideal moisture content for the soil primary tillage operation a) Upper plastic limit of the soil b) Lower plastic limit c) Wilting Point d) All of the above

Description : The ideal moisture content for the soil primary tillage operation a) Upper plastic limit of the soil b) Lower plastic limit c) Wilting Point d) All of the above

Last Answer : a) Upper plastic limit of the soil

The upper limit of investment in plant and machinery for smallscale industries has been fixed currently at (1) 35 lakhs (2) 45 lakhs (3) 60 lakhs (4) 1 crore

Description : The upper limit of investment in plant and machinery for smallscale industries has been fixed currently at (1) 35 lakhs (2) 45 lakhs (3) 60 lakhs (4) 1 crore

Last Answer : 1 crore

Drinking of mineral water with very low levels of pesticides (about 0.02 ppm) for long periods may:

Description : Drinking of mineral water with very low levels of pesticides (about 0.02 ppm) for long periods may:

Last Answer : Drinking of mineral water with very low levels of pesticides (about 0.02 ppm) for long ... . cause leukaemia D. Produce immunity against mosquito.

Disolved oxygen (DO) in water should be? A. 400 to 800 ppm B. 4000 to 8000 ppm C. 0.4 to 0.5 ppm D. 4 to 5 ppm (Answer)

Description : Disolved oxygen (DO) in water should be? A. 400 to 800 ppm B. 4000 to 8000 ppm C. 0.4 to 0.5 ppm D. 4 to 5 ppm (Answer)

Last Answer : D. 4 to 5 ppm (Answer)

TLV of mercury in potable (drinking) water is about __________ ppm. (A) 0.001 (B) 0.1 (C) 1 (D) 5

Description : TLV of mercury in potable (drinking) water is about __________ ppm. (A) 0.001 (B) 0.1 (C) 1 (D) 5

Last Answer : (A) 0.001

Irrigation water containing more than —- ppm Boron is harmful to crops a. 0.5 b. 1 c. 2 d. 3

Description : Irrigation water containing more than —- ppm Boron is harmful to crops a. 0.5 b. 1 c. 2 d. 3

Last Answer : d. 3

A rural water supply serves a population of 10, 000 at the rate of 50 litres per capita per day . For the chlorine dose of 2 PPM the required amount of bleaching powder with 20% available chlorine will be a. 0.5 kg b. 5 kg * c. 10 kg d. 15 kg

Description : A rural water supply serves a population of 10, 000 at the rate of 50 litres per capita per day . For the chlorine dose of 2 PPM the required amount of bleaching powder with 20% available chlorine will be a. 0.5 kg b. 5 kg * c. 10 kg d. 15 kg

Last Answer : b. 5 kg

A 500 g toothpaste sample has 0.4 g fluoride concentration. The fluoride concentration in terms of ppm will be

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

Is chlorine dangerous at 0.5 ppm?

Description : Is chlorine dangerous at 0.5 ppm?

Last Answer : The permissible exposure limit of OSHA is 1 ppm.

The average concentration of carbon dioxide in the atmosphere is : (A) 0.03 ppm (B) 30 ppm (C)0.3 ppm (D) 300 ppm

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

The average concentration of carbon dioxide in the atmosphere is : (A) 0.03 ppm (B) 30 ppm (C)0.3 ppm (D) 300 ppm

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 : (D) 300 ppm

TLV of ozone (O3 ) and phosgene (COCl2 ) in air is __________ ppm. (A) 0.1 (B) 25 (C) 100(D) 1000

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

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

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

Out of the following, TLV of __________ is the minimum (about 0.02 ppm). (A) Phosgene (B) Bromine (C) MIC (Methyl isocyanate) (D) Ozone

Description : Out of the following, TLV of __________ is the minimum (about 0.02 ppm). (A) Phosgene (B) Bromine (C) MIC (Methyl isocyanate) (D) Ozone

Last Answer : (C) MIC (Methyl isocyanate)

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%

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%

. Amount of 2,4-D amine salt at 10 ppm for a pond measuring 40mx20mx5m a). 0.4 kg b). 400 kg c). 40 kg d). 4 kg

Description : . Amount of 2,4-D amine salt at 10 ppm for a pond measuring 40mx20mx5m a). 0.4 kg b). 400 kg c). 40 kg d). 4 kg

Last Answer : c). 40 kg

Carbon dioxide is an important greenhouse gas. What is the current rate in parts per million per year of atmospheric increase of this gas? w) 0.15 ppm per year (parts per million) x) 1.5 ppm per year y) 15 ppm per year z) 150 ppm per year

Description : Carbon dioxide is an important greenhouse gas. What is the current rate in parts per million per year of atmospheric increase of this gas? w) 0.15 ppm per year (parts per million) x) 1.5 ppm per year y) 15 ppm per year z) 150 ppm per year 

Last Answer : ANSWER: X -- 1.5 PPM PER YEAR 

The upper safe noise level for machine operator is: A. 85 db B.100db C. 110db D.115db

Description : The upper safe noise level for machine operator is: A. 85 db B.100db C. 110db D.115db

Last Answer : A. 85 d

The upper safe noise level for machine operator is : a. 85db b. 100db c. 110db d. 115db

Description : The upper safe noise level for machine operator is : a. 85db b. 100db c. 110db d. 115db

Last Answer : a. 85db

Number of moles of CaO required to remove hardness from 1000 litre water having 324 ppm of calcuim bicarbonate and 74.5 ppm of potassium chloride is :

Description : Number of moles of CaO required to remove hardness from 1000 litre water having 324 ppm of calcuim bicarbonate and 74.5 ppm of potassium chloride is :

Last Answer : Number of moles of CaO required to remove hardness from 1000 litre water having 324 ppm of calcuim bicarbonate and 74.5 ppm ... : A. 8 B. 4 C. 3 D. 2

What is the concentration of solution in ppm if 2 kg of 2,4-D is mixed with 1000 lit of water?

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

Pick up the correct statement from the following: A. Hydrogen sulphide gas in excess, may cause corrosion of concrete sewers B. 4 ppm of Dissolved Oxygen (D.O.) is ensured before discharging the treated sewage in river C. Solubility of oxygen in sewage is 95% of that of distilled water D. All the above

Description : Pick up the correct statement from the following: A. Hydrogen sulphide gas in excess, may cause corrosion of concrete sewers B. 4 ppm of Dissolved Oxygen (D.O.) is ensured before discharging the treated ... river C. Solubility of oxygen in sewage is 95% of that of distilled water D. All the above

Last Answer : ANS: D

Pick up the correct statement from the following: A. In treated sewage, 4 ppm of D.O. is essential B. Only very fresh sewage contains some dissolved oxygen C. The solubility of oxygen in sewage is 95% that is in distilled water D. All the above

Description : Pick up the correct statement from the following: A. In treated sewage, 4 ppm of D.O. is essential B. Only very fresh sewage contains some dissolved oxygen C. The solubility of oxygen in sewage is 95% that is in distilled water D. All the above

Last Answer : ANS: D

Maximum permissible turbidity in potable water is __________ ppm. (A) 1 (B) 10 (C) 250 (D) 1000

Description : Maximum permissible turbidity in potable water is __________ ppm. (A) 1 (B) 10 (C) 250 (D) 1000

Last Answer : (B) 10

Dissolved oxygen content in river water is around __________ ppm. (A) 5 (B) 100 (C) 250 (D) 500

Description : Dissolved oxygen content in river water is around __________ ppm. (A) 5 (B) 100 (C) 250 (D) 500

Last Answer : (A) 5

Presence of nitrates in water in excess of 50 ppm causes (A) Methemoglobinemia (B) Gastroenteritis (C) Asphyxiation (D) Tooth decay

Description : Presence of nitrates in water in excess of 50 ppm causes (A) Methemoglobinemia (B) Gastroenteritis (C) Asphyxiation (D) Tooth decay

Last Answer : (A) Methemoglobinemia