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

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

1 Answer

Answer :

(B) Moderately
by

Related questions

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

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

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

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

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

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

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

TLV of ammonia, nitrogen dioxide and phenol vapor in air is __________ ppm. (A) 5 (B) 100 (C) 1000 (D) 2000

Description : TLV of ammonia, nitrogen dioxide and phenol vapor in air is __________ ppm. (A) 5 (B) 100 (C) 1000 (D) 2000

Last Answer : (A) 5

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) 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

The permissible color for domestic water supply is __________ ppm.(A) 1 (B) 20 (C) 100 (D) 1000

Description : The permissible color for domestic water supply is __________ ppm. (A) 1 (B) 20 (C) 100 (D) 1000

Last Answer : (B) 20

As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ μg/m3 .(μg-microgram) (A) 10 (B) 90 (C) 800 (D) 750

Description : As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ μg/m3 .(μg-microgram) (A) 10 (B) 90 (C) 800 (D) 750

Last Answer : (B) 90

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

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

Out of the following, TLV of __________ is maximum (about 500 ppm). (A) Carbon dioxide (B) Toluene (C) Carbon disulphide (D) Acetaldehyde

Description : Out of the following, TLV of __________ is maximum (about 500 ppm). (A) Carbon dioxide (B) Toluene (C) Carbon disulphide (D) Acetaldehyde

Last Answer : (A) Carbon dioxide

TLV of lead for public sewer/waste water is about __________ ppm. (A) 1 (B) 25 (C) 150 (D) 650

Description : TLV of lead for public sewer/waste water is about __________ ppm. (A) 1 (B) 25 (C) 150 (D) 650

Last Answer : (A) 1

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)

Tolerable concentration of toxic carbon monoxide in atmospheric air is about __________ ppm. (A) 50 (B) 1000 (C) 5000 (D) 10000

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

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 temperature (B) Causes asphyxia (C) Causes increase in sea level (D) Enhances the green house effect

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

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 

Maximum permissible concentration (i.e. TLV) of DDT in public water supply system is __________ micro gram (μ g)/litre. (A) 22 (B) 42 (C) 332 (D) 1050

Description : Maximum permissible concentration (i.e. TLV) of DDT in public water supply system is __________ micro gram (μ g)/litre. (A) 22 (B) 42 (C) 332 (D) 1050

Last Answer : (B) 42

When lead-acid batteries are charging, they always give off hydrogen gas that is _____________. A. considered inert B. highly explosive C. extremely toxic D. heavier than air

Description : When lead-acid batteries are charging, they always give off hydrogen gas that is _____________. A. considered inert B. highly explosive C. extremely toxic D. heavier than air

Last Answer : Answer: B

TLV of NO2 & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO2 causes (A) Skin disorder (B) Bronchitis (C) Bone disease (D) Cancer

Description : TLV of NO2 & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO2 causes (A) Skin disorder (B) Bronchitis (C) Bone disease (D) Cancer

Last Answer : (B) Bronchitis

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

The presence of pollutants in the environment is usually expressed in ppm, where ppm stands for: (1) particles per mole (2) purity per microgram (3) pollutant prevent measures (4) parts per million

Description : The presence of pollutants in the environment is usually expressed in ppm, where ppm stands for: (1) particles per mole (2) purity per microgram (3) pollutant prevent measures (4) parts per million

Last Answer : (4) parts per million Explanation: PPM is an abbreviation of Parts Per Million. It is commonly used as a measure of small levels of pollutants in air, water, body fluids, etc. Parts per million is the mass ratio between the pollutant component and the solution.

Chemical shifts (δ) are typically reported in units of A. Gauss (G) B. Millitesla per meter (mT/m) C. Parts per million (ppm) D. Percent (%)

Description : Chemical shifts (δ) are typically reported in units of A. Gauss (G) B. Millitesla per meter (mT/m) C. Parts per million (ppm) D. Percent (%)

Last Answer : Parts per million (ppm) 

The presence of pollutants in the environment is usually expressed in ppm, where ppm stands for: (1) particles per mole (2) purity per microgram (3) pollutant prevent measures (4) parts per million

Description : The presence of pollutants in the environment is usually expressed in ppm, where ppm stands for: (1) particles per mole (2) purity per microgram (3) pollutant prevent measures (4) parts per million

Last Answer : parts per million

The concentration of carbon dioxide in the atmosphere is in the range of: w) 1-10 parts per million x) 10-100 parts per million y) 100-1000 parts per million z) 1000-10,000 parts per million

Description : The concentration of carbon dioxide in the atmosphere is in the range of: w) 1-10 parts per million x) 10-100 parts per million y) 100-1000 parts per million z) 1000-10,000 parts per million

Last Answer : ANSWER: Y -- 100-1000 PARTS PER MILLION (the exact number is 350 ppm as of the time of this article)

Auxins as herbicides are supposed to be: a. Non toxic to animals and human beings b. Highly selective c. Exert their action at extremely low concentration d. All of the above

Description : Auxins as herbicides are supposed to be: a. Non toxic to animals and human beings b. Highly selective c. Exert their action at extremely low concentration d. All of the above

Last Answer : All of the above

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

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

Maximum permissible limit of mercury in human blood is __________ micrograms/100 c.c. (A) 1 (B) 7 (C) 19 (D) 82

Description : Maximum permissible limit of mercury in human blood is __________ micrograms/100 c.c. (A) 1 (B) 7 (C) 19 (D) 82

Last Answer : (B) 7

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

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

Last Answer : Answer : C

DDT residues are rapidly passed through food chain causing biomagnification because DDT is (a) moderately toxic (b) non-toxic to aquatic animals (c) water soluble (d) lipo soluble.

Description : DDT residues are rapidly passed through food chain  causing biomagnification because DDT is (a) moderately toxic (b) non-toxic to aquatic animals (c) water soluble (d) lipo soluble.

Last Answer : (d) lipo soluble.

DDT residues are rapidly passed through food chain causing biomagnification because DDT is (a) moderately toxic (b) non-toxic to aquatic animals (c) water soluble (d) lipo soluble.

Description : DDT residues are rapidly passed through food chain causing biomagnification because DDT is (a) moderately toxic (b) non-toxic to aquatic animals (c) water soluble (d) lipo soluble.

Last Answer : (d) lipo soluble.

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

For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than __________ ppm. (A) 10000 (B) 5 (C) 500 (D) 1000

Description : For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than __________ ppm. (A) 10000 (B) 5 (C) 500 (D) 1000

Last Answer : (B) 5

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%

Satellite DNA contains (A) Highly repetitive sequences (B) Moderately repetitive sequences (C) Non-repetitive sequences (D) DNA-RNA hybrids

Description : Satellite DNA contains (A) Highly repetitive sequences (B) Moderately repetitive sequences (C) Non-repetitive sequences (D) DNA-RNA hybrids

Last Answer : Answer : A

In severe acidosis, the output of urea is (A) Decreased (B) Slightly increased (C) Highly increased (D) Moderately increased

Description : In severe acidosis, the output of urea is (A) Decreased (B) Slightly increased (C) Highly increased (D) Moderately increased

Last Answer : Answer : A

If one amino acid is fed excess, the absorption of another is (A) Slightly accelerated (B) Moderately accelerated (C) Highly accelerated (D) Retarded

Description : If one amino acid is fed excess, the absorption of another is (A) Slightly accelerated (B) Moderately accelerated (C) Highly accelerated (D) Retarded

Last Answer : Answer : D

Q scores are generally ........ correlated with academic performance. Options: A) least B) perfectly C) highly D) moderately

Description : Q scores are generally ........ correlated with academic performance. Options: A) least B) perfectly C) highly D) moderately

Last Answer : C) highly 

Though kinetics of ammonia synthesis dictates the use of low temperature for high equilibrium conversion, yet it is kept moderately high (550°C), because at low temperature (A) Rate of reaction is very low (B) Very high pressure is required resulting in costly pressure vessel (C) Space velocity of gas is very low resulting in decreased conversion (D) None of these

Description : Though kinetics of ammonia synthesis dictates the use of low temperature for high equilibrium conversion, yet it is kept moderately high (550°C), because at low temperature (A) Rate of reaction is very low ... (C) Space velocity of gas is very low resulting in decreased conversion (D) None of these

Last Answer : (A) Rate of reaction is very low

The permissible amount of nitrites present in potable water, is (A) 10 ppm (B) 15 ppm (C) 45 ppm (D) Nil

Description : The permissible amount of nitrites present in potable water, is (A) 10 ppm (B) 15 ppm (C) 45 ppm (D) Nil

Last Answer : (D) Nil

The maximum permissible colour for domestic supplies based on cobalt scale, is (A) 5 ppm (B) 10 ppm (C) 15 ppm (D) 20 ppm

Description : The maximum permissible colour for domestic supplies based on cobalt scale, is (A) 5 ppm (B) 10 ppm (C) 15 ppm (D) 20 ppm

Last Answer : (D) 20 ppm

Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels. (A) 35 (B) 75 (C) 95 (D) 105

Description : Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels. (A) 35 (B) 75 (C) 95 (D) 105

Last Answer : (B) 75

TLV of aldrin in public water supply system is about __________ μg/litre. (A) 0.5 (B) 17 (C) 357 (D) 1097

Description : TLV of aldrin in public water supply system is about __________ μg/litre. (A) 0.5 (B) 17 (C) 357 (D) 1097

Last Answer : (B) 17

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

Death may occur, when SO2 concentration in atmospheric air exceeds __________ ppm.(A) 20 (B) 100 (C) 400 (D) 200

Description : Death may occur, when SO2 concentration in atmospheric air exceeds __________ ppm. (A) 20 (B) 100 (C) 400 (D) 200

Last Answer : (C) 400

A colourless, nonirritant , highly toxic gas that impairs respiration is

Description : A colourless, nonirritant , highly toxic gas that impairs respiration is

Last Answer : A colourless, nonirritant , highly toxic gas that impairs respiration is A. `SO_(2)` B. `NO_(2)` C. `CO_(2)` D. CO.

Maximum permissible limit of noise as per "Noise Pollution Rules 2000 of India" is:

Description : Maximum permissible limit of noise as per "Noise Pollution Rules 2000 of India" is:

Last Answer : Maximum permissible limit of noise as per "Noise Pollution Rules 2000 of India" is: A. 60 decibles B. 70 decibels C. 80 decibels D. 100 decibels.