The fluid exiting a chromatographic column is called the A. eluent B. eluate C. analyte D. elution

The fluid exiting a chromatographic column is called the A. eluent B. eluate C. analyte D. elution
by

1 Answer

Answer :

eluate
by

Related questions

To improve a chromatographic separation, you must A. Increase the number of theoretical plates on the column. B. Increase the height of the theoretical plates on the column. C. Increase both the number and the height of the theoretical plates on the column. D. Decrease both the number and the height of the theoretical plates on the column

Description : To improve a chromatographic separation, you must A. Increase the number of theoretical plates on the column. B. Increase the height of the theoretical plates on the column. C. Increase both the number ... the column. D. Decrease both the number and the height of the theoretical plates on the column

Last Answer : Increase the number of theoretical plates on the column

In a chromatographic separation, which of the following is most appropriate for the qualitative identification of a substance? A. Relative retention factor B. Retention factor C. Retention time D. Resolution

Description : In a chromatographic separation, which of the following is most appropriate for the qualitative identification of a substance? A. Relative retention factor B. Retention factor C. Retention time D. Resolution 

Last Answer : Retention time

Column efficiency is measured in terms of number of theoretical plates, which is: A. Inversely related to height equivalent to theoretical plates B. Directly related to the peak width C. Directly related to height equivalent to theoretical plates D. Inversely related to the peak width

Description : Column efficiency is measured in terms of number of theoretical plates, which is: A. Inversely related to height equivalent to theoretical plates B. Directly related to the peak width C. Directly related to height equivalent to theoretical plates D. Inversely related to the peak width

Last Answer : Inversely related to height equivalent to theoretical plates 

he dipole magnetic moment (μ) is directly proportional to nuclear spin (I), connected by a constant called the A. Gyromagnetic ratio (γ) B. Planck's constant (h) C. Nuclear susceptibility (χ) D. Chemical shift (δ)

Description : he dipole magnetic moment (μ) is directly proportional to nuclear spin (I), connected by a constant called the A. Gyromagnetic ratio (γ) B. Planck's constant (h) C. Nuclear susceptibility (χ) D. Chemical shift (δ) 

Last Answer : Gyromagnetic ratio (γ)

What is shielding in NMR? A. Using a curved piece of metal to block an opponent’s attack B. Putting metal around an Rf source C. When the magnetic moment of an atom blocks the full induced magnetic field from surrounding nuclei D. Blocking parts of a molecule from Rf radiation

Description : What is shielding in NMR? A. Using a curved piece of metal to block an opponent’s attack B. Putting metal around an Rf source C. When the magnetic moment of an atom blocks the full induced magnetic field from surrounding nuclei D. Blocking parts of a molecule from Rf radiation

Last Answer : When the magnetic moment of an atom blocks the full induced magnetic field from surrounding nuclei

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) 

Which of the following names refers to the highest energy spin state of an ¹H nucleus in a magnetic field? A. Spin-up B. Spin-down C. Parallel D. |+½>

Description : Which of the following names refers to the highest energy spin state of an ¹H nucleus in a magnetic field? A. Spin-up B. Spin-down C. Parallel D. |+½>

Last Answer : Spin-down

In mass spectrometry, fragmentation of ions is achieved through? A. Ionization B. Splitting C. Solubilization D. Coupling

Description : In mass spectrometry, fragmentation of ions is achieved through? A. Ionization B. Splitting C. Solubilization D. Coupling

Last Answer : Ionization

Which of the following techniques would be most useful to identify and quantify the presence of a known impurity in a drug substance? A. NMR B. MS C. IR D. HPLC

Description : Which of the following techniques would be most useful to identify and quantify the presence of a known impurity in a drug substance? A. NMR B. MS C. IR D. HPLC

Last Answer : IR

HPLC is an abbreviation for? A. High Profit Liquid Chromatography B. High Pressure Liquid Chromatography C. Higher Performance Low Chromatography D. Higher Profit Low Chromatography

Description : HPLC is an abbreviation for? A. High Profit Liquid Chromatography B. High Pressure Liquid Chromatography C. Higher Performance Low Chromatography D. Higher Profit Low Chromatography

Last Answer : High Pressure Liquid Chromatography

The basis of the technique of chromatography for separating components of a mixture is? A. the differing movement of particles of different mass in an electrical field B. the interaction of the components with a stationary and a mobile phases C. the absorption of infrared radiation by the components. D. the deflection of charged particles in a magnetic field.

Description : The basis of the technique of chromatography for separating components of a mixture is? A. the differing movement of particles of different mass in an electrical field B. the interaction of the ... infrared radiation by the components. D. the deflection of charged particles in a magnetic field. 

Last Answer : the interaction of the components with a stationary and a mobile phases

Which one of the following is necessary for mass spectrometry to occur? A. Loss of an electron B. Change of alignment of a proton in a magnetic field C. A molecular vibration D. Excitation of an electron from the ground state to a higher energy state

Description : Which one of the following is necessary for mass spectrometry to occur? A. Loss of an electron B. Change of alignment of a proton in a magnetic field C. A molecular vibration D. Excitation of an electron from the ground state to a higher energy state

Last Answer : Loss of an electron

The base peak in mass spectrum is? A. The lowest mass peak B. The peak corresponding to the parent ion C. The highest mass peak D. The peak set to 100% relative intensity

Description : The base peak in mass spectrum is? A. The lowest mass peak B. The peak corresponding to the parent ion C. The highest mass peak D. The peak set to 100% relative intensity

Last Answer : The peak set to 100% relative intensity

Signal splitting in NMR arises from? A. Shielding effect B. Spin-spin decoupling C. Spin-spin coupling D. Deshielding effecr

Description : Signal splitting in NMR arises from? A. Shielding effect B. Spin-spin decoupling C. Spin-spin coupling D. Deshielding effecr

Last Answer : Spin-spin coupling

1H nuclei located near electronegative atoms tend to be ______ relative to 1H nuclei A. Shielded B. Deshielded C. Resonanced D. Split

Description : 1H nuclei located near electronegative atoms tend to be ______ relative to 1H nuclei A. Shielded B. Deshielded C. Resonanced D. Split

Last Answer : Deshielded

Which of the following is used as a carrier gas in gas chromatography A. Carbon dioxide B. Oxygen C. Helium D. Methane

Description : Which of the following is used as a carrier gas in gas chromatography A. Carbon dioxide B. Oxygen C. Helium D. Methane

Last Answer : Helium

Which of the following is an example of bulk property or general detector in HPLC A. Fluorescence detector B. Refractive index detector C. Electrochemical detector D. UV-Visible detector

Description : Which of the following is an example of bulk property or general detector in HPLC A. Fluorescence detector B. Refractive index detector C. Electrochemical detector D. UV-Visible detector

Last Answer : Refractive index detector

What is a chromophore? A. A coloured compound B. A group of atoms in compound responsible for electromagnetic radiation C. A group of atoms in a compound responsible for the absorption of electromagnetic radiation D. A group of atoms in coloured compound

Description : What is a chromophore? A. A coloured compound B. A group of atoms in compound responsible for electromagnetic radiation C. A group of atoms in a compound responsible for the absorption of electromagnetic radiation D. A group of atoms in coloured compound

Last Answer : A group of atoms in a compound responsible for the absorption of electromagnetic radiation 

Infrared spectroscopy provides valuable information about A. Molecular weight B. Melting point C. Conjugation D. Functional groups

Description : Infrared spectroscopy provides valuable information about A. Molecular weight B. Melting point C. Conjugation D. Functional groups

Last Answer : Functional groups

Mobile phase can be A. gas or liquid B. solid or liquid C. only solid D. gas only

Description : Mobile phase can be A. gas or liquid B. solid or liquid C. only solid D. gas only 

Last Answer : gas or liquid

Chromatography can be used to A. form mixtures B. change mixture compositions C. separate mixtures into pure substances D. all of these

Description : Chromatography can be used to A. form mixtures B. change mixture compositions C. separate mixtures into pure substances D. all of these

Last Answer : separate mixtures into pure substances

The lowest amount of analyte in a sample which can be detected and quantified is called as? A. Limit of Detection B. Accuracy C. Limit of Quantitation D. Specificity

Description : The lowest amount of analyte in a sample which can be detected and quantified is called as? A. Limit of Detection B. Accuracy C. Limit of Quantitation D. Specificity

Last Answer : C. Limit of Quantitation

What is an analyte or ligand ?

Description : What is an analyte or ligand ?

Last Answer : The substance whose concentration is to be determined is called as an analyte or ligand.

As per USP, number of theoretical plates for an analyte peak in HPLC must be? A. More than 2000 B. More than 1000 C. More than 3000 D. More than 4000

Description : As per USP, number of theoretical plates for an analyte peak in HPLC must be? A. More than 2000 B. More than 1000 C. More than 3000 D. More than 4000

Last Answer : A. More than 2000

The operation involved when the soluble material is largely on the surface of an insoluble solid and is merely washed off by the solvent is called (A) Decoction (B) Percolation (C) Elutriation or elution (D) None of these

Description : The operation involved when the soluble material is largely on the surface of an insoluble solid and is merely washed off by the solvent is called (A) Decoction (B) Percolation (C) Elutriation or elution (D) None of these

Last Answer : (C) Elutriation or elution

The process employing desorption of the absorbed solute by a solvent is called (A) Elution (B) Osmosis (C) Reverse osmosis (D) Sublimation

Description : The process employing desorption of the absorbed solute by a solvent is called (A) Elution (B) Osmosis (C) Reverse osmosis (D) Sublimation

Last Answer : (A) Elution

A process in which substances are separated throug differences in the rates at which the components migrate is called: w) filtration x) chromatography y) elution z) titration

Description : A process in which substances are separated throug differences in the rates at which the components migrate is called: w) filtration x) chromatography y) elution z) titration

Last Answer : ANSWER: X -- CHROMATOGRAPHY

An example of elution is (A) Separation of uranium oxide from its ore by H2SO4 in a Pachuca tank (B) Separation of sugar from sugar beet by hot water (C) Dissolution of tannin out of tree barks by water (D) Recovery of vegetable oils from seeds

Description : An example of elution is (A) Separation of uranium oxide from its ore by H2SO4 in a Pachuca tank (B) Separation of sugar from sugar beet by hot water (C) Dissolution of tannin out of tree barks by water (D) Recovery of vegetable oils from seeds

Last Answer : (A) Separation of uranium oxide from its ore by H2SO4 in a Pachuca tank

Pick out the wrong statement: (A) Change in barometric pressure does not affect the relative humidity (B) In case of a packed tower, the operating velocity is about half of the flooding velocity, generally (C) 'Elution' means the desorption of the adsorbed solute by a solvent (D) The equilibrium moisture content of the solid can be reduced by increasing the absolute humidity

Description : Pick out the wrong statement: (A) Change in barometric pressure does not affect the relative humidity (B) In case of a packed tower, the operating velocity is about half of the ... (D) The equilibrium moisture content of the solid can be reduced by increasing the absolute humidity

Last Answer : (D) The equilibrium moisture content of the solid can be reduced by increasing the absolute humidity

What was it called when the media tried to make the news very exiting to sell more newspapers?

Description : What was it called when the media tried to make the news very exiting to sell more newspapers?

Last Answer : Need answer

When using the bathroom in a public place (restaurant, work, store, etc.), do you check the toilet seat after using and make sure it appears clean before exiting the stall?

Description : When using the bathroom in a public place (restaurant, work, store, etc.), do you check the toilet seat after using and make sure it appears clean before exiting the stall?

Last Answer : I do. It’s automatic, for me.

When exiting the highway, or when the lanes converge due to bottleneck, are you a driver that gets in line ASAP, or do you stay in your lane as long as possible to cut in and get close to front?

Description : When exiting the highway, or when the lanes converge due to bottleneck, are you a driver that gets in line ASAP, or do you stay in your lane as long as possible to cut in and get close to front?

Last Answer : I move as soon as possible, especially for emergency vehicles. I used to work with an ambulance service and I know they appreciate it. Not to mention that now it is a law in my state that if you don’t get over you can get fined up to $500.

Midnight, upon exiting a movie theatre, how many "missed calls" do you have?

Description : Midnight, upon exiting a movie theatre, how many "missed calls" do you have?

Last Answer : What exactly was the question the study was trying to answer?

Do bats always turn left when exiting a cave/building?

Description : Do bats always turn left when exiting a cave/building?

Last Answer : Hmm. I’ve never studied bats, but I work with a post-doc who did his Ph. D on them, and he’s never mentioned anything like that. It doesn’t sound very plausible to me.

When playing full screen games on a Mac, how do you minimize the game, without exiting?

Description : When playing full screen games on a Mac, how do you minimize the game, without exiting?

Last Answer : What happens when you hit the ESC key?

when exiting a parking spot, ____________ has the right-of-way. -General Knowledge

Description : when exiting a parking spot, ____________ has the right-of-way. -General Knowledge

Last Answer : When exiting a parking spot, the vehicle that is already in the lane has the right-of-way.

How many times the above given loop will run and what will be the value of ctr, immediately after exiting from the loop. -Technology

Description : How many times the above given loop will run and what will be the value of ctr, immediately after exiting from the loop. -Technology

Last Answer : (i) 3 times4(ii)Above given loop will come under Entry controlled loop as in the above given loop condition is being checked at the time of entering in the loop.

Name the devices : 1. This device constanUy looks at all the data entering and exiting your connection. -Technology

Description : Name the devices : 1. This device constanUy looks at all the data entering and exiting your connection. -Technology

Last Answer : (i) Firewall is a device that looks at all the data entering and exiting connection. It can block or reject data in response to an established rule.(ii) A switch is an intelligent device ... several nodes to form a network and redirects the received information only to the intended node(s).

When exiting a parking spot who has the right of way?

Description : When exiting a parking spot who has the right of way?

Last Answer : To directly answer your question, I would say that the vehicleleaving a parking spot - in a parking lot - DOES NOT have the rightof way. Any vehicle leaving a parking spot to a public road wouldalso NOT have the right of way.This answer is given under the authority of COMMON SENSE.

The following are true about the spinal cord: a. segment T12 lies at the level of vertebral body T9 b. cerebrospinal fluid is found within the subdural space c. two point discrimination is transmitted in the dorsal column d. hemisection results in contralateral loss of pain and temperature sense below the lesio

Description : The following are true about the spinal cord: a. segment T12 lies at the level of vertebral body T9 b. cerebrospinal fluid is found within the subdural space c. two point ... the dorsal column d. hemisection results in contralateral loss of pain and temperature sense below the lesio

Last Answer : segment T12 lies at the level of vertebral body T9

A 30-m vertical column of fluid (density 1878 kg/m3 ) is located where g= 9.65 mps2 . Find the pressure at the base of the column. (Formula: pg= gρhg/k )  a. 543680 N/m2  b. 543.68 kPa (gauge)  c. Both a & b  d. None of the above

Description : A 30-m vertical column of fluid (density 1878 kg/m3 ) is located where g= 9.65 mps2 . Find the pressure at the base of the column. (Formula: pg= gρhg/k )  a. 543680 N/m2  b. 543.68 kPa (gauge)  c. Both a & b  d. None of the above

Last Answer : Both a & b