Air filtration typically uses a filter. a. HEPA b. Membrane c. Sand d. Diatomaceous Earth

Air filtration typically uses a filter.
a. HEPA
b. Membrane
c. Sand
d. Diatomaceous Earth
by

1 Answer

Answer :

a. HEPA
by

Related questions

Filter aids like asbestos, kieselguhr, diatomaceous earth etc. are used to increase the porosity of the final filter cake & reducing the cake resistance during filtration. Filter aid is (A) Added to the feed slurry (B) Pre-coated on the filter medium prior to filtration (C) Separated from the cake by dissolving solids or by burning it off (D) All 'a', 'b' & 'c'

Description : Filter aids like asbestos, kieselguhr, diatomaceous earth etc. are used to increase the porosity of the final filter cake & reducing the cake resistance during filtration. Filter aid is (A) Added to the feed slurry (B) Pre ... the cake by dissolving solids or by burning it off (D) All 'a', 'b' & 'c'

Last Answer : (D) All 'a', 'b' & 'c'

When is a HEPA filter used? a. To Filter Bacteria Out Of A Vaccine b. To Trap Particles In The Air c. To Protect Burn Victims d. To Separate Bacteria And Viruses

Description : When is a HEPA filter used? a. To Filter Bacteria Out Of A Vaccine b. To Trap Particles In The Air c. To Protect Burn Victims d. To Separate Bacteria And Viruses

Last Answer : b. To Trap Particles In The Air

The most suitable pore size for bacterial filtration in a membrane filter is ------- A 0.22 mm B 0.45 nm C 0.22 µm D 30 µm

Description : The most suitable pore size for bacterial filtration in a membrane filter is ------- A 0.22 mm B 0.45 nm C 0.22 µm D 30 µm

Last Answer : C 0.22 µm

Diatomaceous earth is a/an (A) Explosive (B) Filter aid (C) Filter medium (D) Catalyst

Description : Diatomaceous earth is a/an (A) Explosive (B) Filter aid (C) Filter medium (D) Catalyst

Last Answer : (B) Filter aid

The most common filter aid is (A) Diatomaceous earth (B) Calcium silicate (C) Sodium carbonate (D) Silica gel

Description : The most common filter aid is (A) Diatomaceous earth (B) Calcium silicate (C) Sodium carbonate (D) Silica gel

Last Answer : (A) Diatomaceous earth

__________ is the most commonly used 'filter aid'. (A) Diatomaceous earth (B) Fuller's earth (C) Vermiculite (D) Semi-plastic clay

Description : __________ is the most commonly used 'filter aid'. (A) Diatomaceous earth (B) Fuller's earth (C) Vermiculite (D) Semi-plastic clay

Last Answer : (A) Diatomaceous earth

Which one is a filter aid? (A) Canvas fabric (B) Diatomaceous earth (C) Calcined lime (D) None of these

Description : Which one is a filter aid? (A) Canvas fabric (B) Diatomaceous earth (C) Calcined lime (D) None of these

Last Answer : (B) Diatomaceous earth

Which of the following is not used as filter aid? (A) Asbestos (B) Diatomaceous earth (C) Purified wood cellulose (D) Rice husk

Description : Which of the following is not used as filter aid? (A) Asbestos (B) Diatomaceous earth (C) Purified wood cellulose (D) Rice husk

Last Answer : (D) Rice husk

Which of the following is bactericidal? A.Membrane filtration B.Ionizing radiation C.Freeze-drying D.Deep freezing

Description : Which of the following is bactericidal? A.Membrane filtration B.Ionizing radiation C.Freeze-drying D.Deep freezing

Last Answer : B.Ionizing radiation

Could my HEPA air filter be making the air very dry?

Description : Could my HEPA air filter be making the air very dry?

Last Answer : Hepa removes particulate matter, not moisture, so there must be some other reason your room is dry.

How much is a replacement filter for the IQAir HealthPro Plus HEPA Air Purifier?

Description : How much is a replacement filter for the IQAir HealthPro Plus HEPA Air Purifier?

Last Answer : That depends, because there are a few different types of filters that the the purifier uses. The HyperHEPA filter is around $190, the v5 Cell Gas and Odor Filter is about $90, and the Pre-max Prefilter is about $60.

Does the Sharper Image S1724 Air Purifier use a HEPA filter?

Description : Does the Sharper Image S1724 Air Purifier use a HEPA filter?

Last Answer : The Sharper Image does indeed use a HEPA filter, which makes it great for people with Allergies.

How often should a filter be changed in a hepa air purifier?

Description : How often should a filter be changed in a hepa air purifier?

Last Answer : monthly, but depends on how often you run the purifier. Periodically check for dust during the summer

Air Purifier HEPA Filter?

Description : Air Purifier HEPA Filter?

Last Answer : form_title= Air Purifier HEPA Filter form_header= Breathe clean air with an air purifier! When was your filter last changed?*= _ [50] How old is your air purifier?*= _ [50] What is your budget for a new filter?*= _ [50]

What are some lightweight vacuum cleaners on the market with hepa filtration?

Description : What are some lightweight vacuum cleaners on the market with hepa filtration?

Last Answer : Many brands and types of lightweight vacuum cleaners with HEPA filtration are available in the market; Samsung 5490M, Miele S168, Upright, Dirt Devil Dynamite , Backpack 4-state HEPA Cleaner, HALO, Dyson ... best of all Aerus electrolux with 99,99 filter all the rest have efficiencefrrom 15% to 45%

Commercial scale production of amino acids is typically carried out using A- regulatory mutants to cause overproduction of biochemical intermediates B- creation of an intentional increase in membrane permeability to increase release of the amino acids C- both (a) and (b) D- none of the above

Description : Commercial scale production of amino acids is typically carried out using A- regulatory mutants to cause overproduction of biochemical intermediates B- creation of an intentional increase in membrane permeability to increase release of the amino acids C- both (a) and (b) D- none of the above

Last Answer : both (a) and (b)

Filtration of water in a paper mill is done by a/an __________ filter. (A) Open sand (B) Plate and frame (C) Vacuum leaf (D) Sparkler

Description : Filtration of water in a paper mill is done by a/an __________ filter. (A) Open sand (B) Plate and frame (C) Vacuum leaf (D) Sparkler

Last Answer : (A) Open sand

Water filtration rate in a rapid sand filter ranges from __________ kilolitres/m2 /hr. (A) 0.1 to 1 (B) 3 to 6 (C) 10 to 15 (D) 15 to 20

Description : Water filtration rate in a rapid sand filter ranges from __________ kilolitres/m2 /hr. (A) 0.1 to 1 (B) 3 to 6 (C) 10 to 15 (D) 15 to 20

Last Answer : (B) 3 to 6

Water filtration rate in a slow sand filter ranges from __________ litres/m2 /hr. (A) 10 to 20 (B) 100 to 200 (C) 1500 to 2500(D) 4000 to 5000

Description : Water filtration rate in a slow sand filter ranges from __________ litres/m2 /hr. (A) 10 to 20 (B) 100 to 200 (C) 1500 to 2500 (D) 4000 to 5000

Last Answer : (B) 100 to 200

Temporary hardness of water can be removed by (A) Addition of alum (a coagulant) (B) Boiling (C) Filtration (through gravity sand filter) (D) Addition of lime

Description : Temporary hardness of water can be removed by (A) Addition of alum (a coagulant) (B) Boiling (C) Filtration (through gravity sand filter) (D) Addition of lime

Last Answer : (B) Boiling

What model vacuums do Allergen Reduction Kirby HEPA Filter Vacuum Bags fit?

Description : What model vacuums do Allergen Reduction Kirby HEPA Filter Vacuum Bags fit?

Last Answer : The Allergen Reduction Kirby HEPA Filter Vacuum Bags fit Generation 3, G4, G5, G6, G7, and Ultimate G vacuums.

Where can I buy a Hepa filter?

Description : Where can I buy a Hepa filter?

Last Answer : It is important that you replace your hepa filter as soon as possible. I do not know what brand of vacuum you have. But there are many websites which sell hepa filters for many different vacuums. Here is one of the best websites you can go to: www.filtersfast.com/hepa

Sterilization potency of which of the following method is highest? A Filtration B Hot Air oven C Ultra sound waves D Autoclaving

Description : Sterilization potency of which of the following method is highest? A Filtration B Hot Air oven C Ultra sound waves D Autoclaving

Last Answer : D Autoclaving

Rapid sand filter (A) Should be preceded by coagulation and sedimentation (B) Uses rapid sand as filter media(C) Is used after slow sand filtering has been done (D) Can combine disinfection also

Description : Rapid sand filter (A) Should be preceded by coagulation and sedimentation (B) Uses rapid sand as filter media (C) Is used after slow sand filtering has been done (D) Can combine disinfection also

Last Answer : (A) Should be preceded by coagulation and sedimentation

Browne’s tubes are the most commonly used indicator for _ _ _ _ _ _ _ _ A Heat sterilization B Radiation sterilization C Gaseous sterilization D Filtration sterilization

Description : Browne’s tubes are the most commonly used indicator for _ _ _ _ _ _ _ _ A Heat sterilization B Radiation sterilization C Gaseous sterilization D Filtration sterilization

Last Answer : A Heat sterilization

Anyone take food grade Diatomaceous Earth internally?

Description : Anyone take food grade Diatomaceous Earth internally?

Last Answer : I do not. I don’t feel my innards need to be exfoliated with crystalline silica.

Have you heard of Food Grade Diatomaceous Earth?

Description : Have you heard of Food Grade Diatomaceous Earth?

Last Answer : answer:Diatoms are tiny fossils that are basically crystalline silica. Inhaling that stuff can give you cancer. It's harder than the enamel in your teeth. It has absolutely zero nutritional value. The best ... out. It would benefit you much more to just have some whole-grain oats in the morning.

Which adsorbent is used for removing sulphur compounds (S Q, H2S, RSH etc.) removal from coke oven gas in by-products recovery plant? (A) Silica gel (B) Diatomaceous earth (C) Basalt (D) Bog iron (i.e., moist ferric hydroxide)

Description : Which adsorbent is used for removing sulphur compounds (S Q, H2S, RSH etc.) removal from coke oven gas in by-products recovery plant? (A) Silica gel (B) Diatomaceous earth (C) Basalt (D) Bog iron (i.e., moist ferric hydroxide)

Last Answer : (D) Bog iron (i.e., moist ferric hydroxide)

Select the wrong statement. (a) The walls of diatoms are easily destructible. (b) ‘Diatomaceous earth’ is formed by the cell walls of diatoms. (c) Diatoms are chief producers in the oceans. (d) Diatoms are microscopic and float passively in water.

Description : Select the wrong statement. (a) The walls of diatoms are easily destructible. (b) ‘Diatomaceous earth’ is formed by the cell walls of diatoms. (c) Diatoms are chief producers in the oceans. (d) Diatoms are microscopic and float passively in water.

Last Answer : (a) The walls of diatoms are easily destructible.

Wet chlorine gas produced during electrolysis of brine is dehydrated by (A) Spraying 66° Be H2SO4 counter current to the flow of the gas (B) Passing it through a bed of diatomaceous earth (C) Passing it through a bed of silica gel (D) None of these

Description : Wet chlorine gas produced during electrolysis of brine is dehydrated by (A) Spraying 66° Be H2SO4 counter current to the flow of the gas (B) Passing it through a bed of diatomaceous earth (C) Passing it through a bed of silica gel (D) None of these

Last Answer : (A) Spraying 66° Be H2SO4 counter current to the flow of the gas

Yellow glycerine is made into white, using (A) Activated carbon (B) Diatomaceous earth (C) Bauxite (D) Bentonite

Description : Yellow glycerine is made into white, using (A) Activated carbon (B) Diatomaceous earth (C) Bauxite (D) Bentonite

Last Answer : (A) Activated carbon

A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of thermal conductivity 0.14 W/m.K and thickness __________ metre. (A) 0.01 (B) 0.1 (C) 0.25 (D) 0.5

Description : A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of ... and thickness __________ metre. (A) 0.01 (B) 0.1 (C) 0.25 (D) 0.5

Last Answer : (B) 0.1

What part or parts of the male and female reproductive systems are typically colonized by indigenous microbiota? a. Male: Ureters; Female: Vagina And Ovaries b. Male: Testes And Epididymis c. Male: Urethra; Female: Vagina, Vulva, And Cervix d. Male: Bladder And Ureters; Female: Fallopian Tubes And Cervix

Description : What part or parts of the male and female reproductive systems are typically colonized by indigenous microbiota? a. Male: Ureters; Female: Vagina And Ovaries b. Male: Testes And Epididymis c. Male: ... : Vagina, Vulva, And Cervix d. Male: Bladder And Ureters; Female: Fallopian Tubes And Cervix

Last Answer : c. Male: Urethra; Female: Vagina, Vulva, And Cervix

Teichoic acids are typically found in A- cell walls of gram positive bacteria B- outer membranes of gram positive bacteria C- cell walls of gram negative bacteria D- outer membranes of gram negative bacteria

Description : Teichoic acids are typically found in A- cell walls of gram positive bacteria B- outer membranes of gram positive bacteria C- cell walls of gram negative bacteria D- outer membranes of gram negative bacteria

Last Answer : cell walls of gram positive bacteria

Has anyone had any experience using a HEPA (high efficiency particle arresting) air cleaner?

Description : Has anyone had any experience using a HEPA (high efficiency particle arresting) air cleaner?

Last Answer : We use it all the time in our ICU, but it’s, well, an ICU.

How to Choose the Best HEPA Home Air Purifiers?

Description : How to Choose the Best HEPA Home Air Purifiers?

Last Answer : Home air purifiers can use a variety of filters, the mostefficient of which isthe HEPA filter. According to the EPA, to purify the air in yourhome, a HEPAfilter is your best buy. Here ... easily matchan airpurifier to your room size.When comparing HEPA air purifiers for your home, remember thatthes

Are there any vehicles that have cabin air ionizers or hepa filters?

Description : Are there any vehicles that have cabin air ionizers or hepa filters?

Last Answer : From what all I have seen no, there are no cars that actually have either of these built in. There appear to be a number of different models of these filters that can be bought a used in a car. ... they would be a fair drain on the car's battery, so you might want to take that into consideration.

What is the difference between a Hepa Air Purifier and an Ammonia Air Purifier?

Description : What is the difference between a Hepa Air Purifier and an Ammonia Air Purifier?

Last Answer : A Hepa Air Purifier uses a specialized Hepa filter to clean dust, contaminants, and allergans from the air, while an Ammonia Air Purifier uses chemical mechanisms to remove amines and ammonias from the air.

Insufficient washing of sand grains in a rapid sand filter causes (A) Air binding (B) Shrinkage of filtering media (C) Mud balls (D) Expansion of filtering media

Description : Insufficient washing of sand grains in a rapid sand filter causes (A) Air binding (B) Shrinkage of filtering media (C) Mud balls (D) Expansion of filtering media

Last Answer : (C) Mud balls

In a rapid sand filter, air binding is caused due to excessive (A) Negative pressure (B) Pressure (C) Turbidity (D) Water pressure

Description : In a rapid sand filter, air binding is caused due to excessive  (A) Negative pressure  (B) Pressure  (C) Turbidity  (D) Water pressure

Last Answer : (A) Negative pressure

The vector transmitting Leishmaniasis is the a. Mosquito. b. Sand fly.c. Tsetse fly. d. Sand flea.

Description : The vector transmitting Leishmaniasis is the a. Mosquito. b. Sand fly. c. Tsetse fly. d. Sand flea.

Last Answer : b. Sand fly

Pick out the true statement pertaining to water treatment. (A) Slow sand filters can remove colour completely (B) Activated carbon can be used for taste & odour control without subsequent filtration (C) Application of activated carbon reduces the temporary hardness of water (D) Normally, the turbidity is removed by adding a coagulant prior to sedimentation

Description : Pick out the true statement pertaining to water treatment. (A) Slow sand filters can remove colour completely (B) Activated carbon can be used for taste & odour control without subsequent filtration ... of water (D) Normally, the turbidity is removed by adding a coagulant prior to sedimentation

Last Answer : (D) Normally, the turbidity is removed by adding a coagulant prior to sedimentation

Trickling filter comes under A- primary treatment B- secondary treatmentC- tertiary treatment D- none of these

Description : Trickling filter comes under A- primary treatment B- secondary treatment C- tertiary treatment D- none of these

Last Answer : secondary treatment

Assertion :- Filtration of colloidal particles is not possible by filter paper. Reason :- Size of colloidal particle is less than filter paper pores.

Description : Assertion :- Filtration of colloidal particles is not possible by filter paper. Reason :- Size of colloidal particle is less than filter paper pores.

Last Answer : Assertion :- Filtration of colloidal particles is not possible by filter paper. Reason :- Size of ... D. If both Assertion & Reason are False.

In a trickling filter A. Filtration process is used B. Biological action is used C. Neither A. nor B. D. Both A. and B.

Description : In a trickling filter A. Filtration process is used B. Biological action is used C. Neither A. nor B. D. Both A. and B.

Last Answer : ANS: B

With increase in drum speed, in a rotary drum filter, the filtration rate (A) Increases(B) Increases linearly(C) Decreases(D) Is not affected

Description : With increase in drum speed, in a rotary drum filter, the filtration rate (A) Increases (B) Increases linearly (C) Decreases (D) Is not affected

Last Answer : (A) Increases

Filter aid is used to (A) Increase the rate of filtration (B) Decrease the pressure drop (C) Increase the porosity of the cake (D) Act as a support base for the septum

Description : Filter aid is used to (A) Increase the rate of filtration (B) Decrease the pressure drop (C) Increase the porosity of the cake (D) Act as a support base for the septum

Last Answer : (C) Increase the porosity of the cake

Filter medium resistance is important during the __________ of filtration. (A) Early stages (B) Final stages (C) Entire process (D) None of these

Description : Filter medium resistance is important during the __________ of filtration. (A) Early stages (B) Final stages (C) Entire process (D) None of these

Last Answer : (A) Early stages

Addition of filter aid to the slurry before filtration is done to __________ of the cake. (A) Increase the porosity (B) Increase the compressibility co-efficient (C) Decrease the porosity (D) Decrease the compressibility co-efficient

Description : Addition of filter aid to the slurry before filtration is done to __________ of the cake. (A) Increase the porosity (B) Increase the compressibility co-efficient (C) Decrease the porosity (D) Decrease the compressibility co-efficient

Last Answer : (A) Increase the porosity