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

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
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(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.
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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 pollutants in environment are measured in PPM, what is the full form of PPM

Description : The pollutants in environment are measured in PPM, what is the full form of PPM

Last Answer : Parts Per Million

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

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) 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

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) 

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 blood glucose level is commonly expressed as (a) mm of Hg (b) milligram perdecilitre (c) parts per million (d) grams per liter

Description : The blood glucose level is commonly expressed as (a) mm of Hg (b) milligram perdecilitre (c) parts per million (d) grams per liter

Last Answer : Ans:(b)

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

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

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

Certain substances are classified as water pollutants, others as air pollutants and still others as land pollutants. Which of the following pollutes all three parts of our environment? w) fluorocarbons x) smog y) acid rain z) ozone

Description : Certain substances are classified as water pollutants, others as air pollutants and still others as land pollutants. Which of the following pollutes all three parts of our environment? w) fluorocarbons x) smog y) acid rain z) ozone

Last Answer : ANSWER: Y -- ACID RAIN

Which of the following statements are correct ? (i) Benzene hexachloride (BHC) is a non-biodegradable pollutant. (ii) Anthropogenic air pollutants are

Description : Which of the following statements are correct ? (i) Benzene hexachloride (BHC) is a non-biodegradable pollutant. (ii) Anthropogenic air pollutants are

Last Answer : Which of the following statements are correct ? (i) Benzene hexachloride (BHC) is a non-biodegradable pollutant. (ii) ... b B. a,c C. b,c D. c,d

There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant? (A) Mercury (B) Arsenic (C) Aluminium (D) Lead

Description : There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant? (A) Mercury (B) Arsenic (C) Aluminium (D) Lead

Last Answer : (C) Aluminium

The purity of gold is expressed in carats. The purest form of gold is– (1) 24 carats (2) 99.6 carats (3) 91.6 carats (4) 22 carats

Description : The purity of gold is expressed in carats. The purest form of gold is– (1) 24 carats (2) 99.6 carats (3) 91.6 carats (4) 22 carats

Last Answer : (1) 24 carats Explanation: Gold is a dense, soft, shiny, malleable and ductile metal. Gold has a bright yellow colour and luster traditionally considered attractive, which it maintains without oxidizing in air ... The gold content of alloys is measured in carats (k). Pure gold is designated as 24k.

The purity of gold is expressed in terms of ____ ___. a)carat b)ounce c)pound d)none

Description : The purity of gold is expressed in terms of ____ ___. a)carat b)ounce c)pound d)none

Last Answer : a)carat

The purity of gold is expressed in carats. The purest form of gold is (1) 24 carats (2) 99.6 carats (3) 91.6 carats(4) 22 carats

Description : The purity of gold is expressed in carats. The purest form of gold is (1) 24 carats (2) 99.6 carats (3) 91.6 carats(4) 22 carats

Last Answer :  24 carats

Solid Sulphur (32 g/mole)pH = 7.16pH in ppm?

Description : Solid Sulphur (32 g/mole)pH = 7.16pH in ppm?

Last Answer : PO43−

Turbidity of water is expressed (A) In ppm (B) In numbers in an arbitrary scale (C) By pH value (D) By colour code

Description : Turbidity of water is expressed  (A) In ppm  (B) In numbers in an arbitrary scale  (C) By pH value  (D) By colour code 

Last Answer : (A) In ppm

Printer resolution is usually measured in ________ A. Characters Per Minute (CPM) B. Pixels Per Inch (PPI) C. Pages Per Minute (PPM) D. Dots Per Inch (DPI)

Description : Printer resolution is usually measured in ________ A. Characters Per Minute (CPM) B. Pixels Per Inch (PPI) C. Pages Per Minute (PPM) D. Dots Per Inch (DPI)

Last Answer : D. Dots Per Inch (DPI)

CAGE framework measures the match between countries and companies according to dimensions of distance. G stands for..? A. Environment B. Education C. Ethics D. Economic

Description : CAGE framework measures the match between countries and companies according to dimensions of distance. G stands for..? A. Environment B. Education C. Ethics D. Economic

Last Answer : Economic

Size measurement of ultrafine particles can be best expressed in terms of (A) Centimetre (B) Screen size (C) Micron (D) Surface area per unit mass

Description : Size measurement of ultrafine particles can be best expressed in terms of (A) Centimetre (B) Screen size (C) Micron (D) Surface area per unit mass

Last Answer : (D) Surface area per unit mass

The ratio that approximates the number of net molecule of ATP formed per mole of Glucose oxidized in presence of O2 to the net number formed in abscence of O2 is (A) 4 : 1 (B) 10 : 2 (C) 12 : 1 (D) 18 : 1

Description : The ratio that approximates the number of net molecule of ATP formed per mole of Glucose oxidized in presence of O2 to the net number formed in abscence of O2 is (A) 4 : 1 (B) 10 : 2 (C) 12 : 1 (D) 18 : 1

Last Answer : B

It is required to maintain a therapeutic concentration of 10 microgram/mL for 12 hours of a drug having half life of 1.386 hr and Vd of 5 L. The dose required in a sustained release product will be (A) 600 mg (B) 300 mg (C) 30 mg (D) 60 mg

Description : It is required to maintain a therapeutic concentration of 10 microgram/mL for 12 hours of a drug having half life of 1.386 hr and Vd of 5 L. The dose required in a sustained release product will be (A) 600 mg (B) 300 mg (C) 30 mg (D) 60 mg

Last Answer : (B) 300 mg

The Volume of distribution of a drug administered at a dose of 300 mg and exhibiting 30 microgram/mL instantaneous concentration in plasma shall be (A)10 L (B) 100 L (C) 1.0 L (D) 0.10 L

Description : The Volume of distribution of a drug administered at a dose of 300 mg and exhibiting 30 microgram/mL instantaneous concentration in plasma shall be (A)10 L (B) 100 L (C) 1.0 L (D) 0.10 L

Last Answer : (A)10 L

A drug (200 mg dose) administered in tablet form and as intravenous injection (50 mg dose) showed AUG of 100 and 200 microgram hr/mL, respectively. The absolute availability of the drug through oral administration is : (A) 125% (B) 250 % (C) 12.5% (D) 1.25%

Description : A drug (200 mg dose) administered in tablet form and as intravenous injection (50 mg dose) showed AUG of 100 and 200 microgram hr/mL, respectively. The absolute availability of the drug through oral administration is : (A) 125% (B) 250 % (C) 12.5% (D) 1.25%

Last Answer : (C) 12.5%

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

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

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

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

In case of an ideal solution, the total vapor pressure varies __________ with the composition expressed as mole fraction, (A) Inversely (B) Linearly (C) Exponentially (D) None of these

Description : In case of an ideal solution, the total vapor pressure varies __________ with the composition expressed as mole fraction, (A) Inversely (B) Linearly (C) Exponentially (D) None of these

Last Answer : (B) Linearly

‘Aerosol’ is - (1) Suspended solid particles in air (2) Pollutant gas, present in air (3) (8) Microbes, present in air (4) Green house gas present in air

Description : ‘Aerosol’ is - (1) Suspended solid particles in air (2) Pollutant gas, present in air (3) (8) Microbes, present in air (4) Green house gas present in air

Last Answer : (1) Suspended solid particles in air

Fine organic or inorganic particles suspended in air is called --------? A. particulate pollutant B. gaseous pollutant C. aerosol (Answer) D. none of these

Description : Fine organic or inorganic particles suspended in air is called --------? A. particulate pollutant B. gaseous pollutant C. aerosol (Answer) D. none of these

Last Answer : C. aerosol (Answer)

Which is a secondary air pollutant? (A) Photochemical smog (B) Sulphur dioxide (C) Nitrogen dioxide (D) Dust particles

Description : Which is a secondary air pollutant? (A) Photochemical smog (B) Sulphur dioxide (C) Nitrogen dioxide (D) Dust particles

Last Answer : (A) Photochemical smog

Which of the following is a secondary air pollutant? (A) Photochemical smog (B) Sulphur dioxide (C) Nitrogen dioxide (D) Dust particles

Description : Which of the following is a secondary air pollutant? (A) Photochemical smog (B) Sulphur dioxide (C) Nitrogen dioxide (D) Dust particles

Last Answer : (A) Photochemical smog

‘Aerosol’ is (1) Suspended solid particles in air (2) Pollutant gas, present in air (3) Microbes, present in air (4) Green house gas present in air

Description : ‘Aerosol’ is (1) Suspended solid particles in air (2) Pollutant gas, present in air (3) Microbes, present in air (4) Green house gas present in air

Last Answer : Suspended solid particles in air

Cable attenuation is usually expressed in terms of a. Loss per foot b. dB/km c. intensity per mile d. voltage drop per inch

Description : Cable attenuation is usually expressed in terms of a. Loss per foot b. dB/km c. intensity per mile d. voltage drop per inch

Last Answer : b. dB/km

Frequency of vibrations is usually expressed in A number of cycles per hour B number of cycles per minute C number of cycles per secondD None of these

Description : Frequency of vibrations is usually expressed in A number of cycles per hour B number of cycles per minute C number of cycles per secondD None of these

Last Answer : C number of cycles per second

Frequency of vibrations is usually expressed in ( A ) number of cycles per hour ( C ) number of cycles per second C ( B ) number of cycles per minute ( D ) None of these

Description : Frequency of vibrations is usually expressed in ( A ) number of cycles per hour ( C ) number of cycles per second C ( B ) number of cycles per minute ( D ) None of these

Last Answer : ( C ) number of cycles per second

Water cement ration is, usually, expressed in (a) Litres of water required per bag of cement (b) Litres of water required per kg of cement (c) Both (a) and (b) (d) None of these

Description : Water cement ration is, usually, expressed in (a) Litres of water required per bag of cement (b) Litres of water required per kg of cement (c) Both (a) and (b) (d) None of these

Last Answer : (a) Litres of water required per bag of cement

Cable attenuation is usually expressed in terms of ∙ A. loss per foot ∙ B. dB/km ∙ C. intensity per mile ∙ D. voltage drop per inch

Description : Cable attenuation is usually expressed in terms of ∙ A. loss per foot ∙ B. dB/km ∙ C. intensity per mile ∙ D. voltage drop per inch

Last Answer : . dB/km

Cable attenuation is usually expressed in terms of ∙ a. Loss per foot ∙ b. dB/km ∙ c. intensity per mile ∙ d. voltage drop per inch

Description : Cable attenuation is usually expressed in terms of ∙ a. Loss per foot ∙ b. dB/km ∙ c. intensity per mile ∙ d. voltage drop per inch

Last Answer : ∙ b. dB/km

The presence of these pollutants can cause a series of problems. The main problems that are caused______ • are fouling, • limestone formation, • corrosion and biological • All of the above

Description : The presence of these pollutants can cause a series of problems. The main problems that are caused______ • are fouling, • limestone formation, • corrosion and biological • All of the above

Last Answer : All of the above

Pollutants that are introduced into the environment by human activity are called as ------? A. Qualitative pollutants (Answer) B. Quantitative pollutants C. Anthropogenic pollutants D. All of Above

Description : Pollutants that are introduced into the environment by human activity are called as ------? A. Qualitative pollutants (Answer) B. Quantitative pollutants C. Anthropogenic pollutants D. All of Above

Last Answer : A. Qualitative pollutants (Answer)

In a polluted environment, the maximum pollutant will occur in:

Description : In a polluted environment, the maximum pollutant will occur in:

Last Answer : In a polluted environment, the maximum pollutant will occur in: A. Primary producers B. ... consumers C. Secondary consumers D. Primary consumers.

Define the following terms: environment, pollution, pollutant.

Description : Define the following terms: environment, pollution, pollutant.

Last Answer : The natural world that surrounds a living thing is called environment. The environment affects the growth and development of living things. When some unwanted and harmful thing appears in an environment we ... noise' air' water and Land. Anything which harms the environment is called a pollutant.

In the Gold foil experiment of Geiger and Marsden, that paved the way for Rutherford’s model of an atom, ~ 1.00% of the α-particles were found to deflect at angles > 50º. If one mole of α- -Science

Description : In the Gold foil experiment of Geiger and Marsden, that paved the way for Rutherford’s model of an atom, ~ 1.00% of the α-particles were found to deflect at angles > 50º. If one mole of α- -Science

Last Answer : Total number of α particles used for bombardment = 1 mole 1 mole=6.022×1023 particles number of α particles deflected at angles greater than 50°(>50°)= 1% Number of α particles ... at angles less than 50°= 99/100 × 6.022 × 1023 =5.96 × 1023

What instrument could be used to measure a mole of solid solute particles?

Description : What instrument could be used to measure a mole of solid solute particles?

Last Answer : We could use a laboratory scale to measure a mole of solid material. A mole represents Avogadro's number of atoms or molecules of the solid material. Table salt, sodium chloride, for instance has a weight ... be the instrument to use to measure that and to measure out a mole of most other solids.

In the `CO_(2)` content of the atmosphere is as high as 300 parts per million

Description : In the `CO_(2)` content of the atmosphere is as high as 300 parts per million

Last Answer : In the `CO_(2)` content of the atmosphere is as high as 300 parts per million A. All plants ... time and then die D. The plants would thrive well.

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)