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)
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
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
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
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
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
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
Description : Debye is the unit used to measure a) Permittivity b) Electric dipole moment c) Magnetic dipole moment d) Susceptibility
Last Answer : b) Electric dipole moment
Description : The permittivity is also called a) Electrostatic energy b) Dielectric constant c) Dipole moment d) Susceptibility
Last Answer : b) Dielectric constant
Description : The energy of the photon is ∙ a. Directly proportional to its bandwidth ∙ b. Directly proportional to the Planck’s constant ∙ c. Directly proportional to Boltzmann’s constant ∙ d. Inversely proportional to the Planck’s constant
Last Answer : Directly proportional to the Planck’s constant
Description : The fluid exiting a chromatographic column is called the A. eluent B. eluate C. analyte D. elution
Last Answer : eluate
Description : In mass spectrometry, fragmentation of ions is achieved through? A. Ionization B. Splitting C. Solubilization D. Coupling
Last Answer : Ionization
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
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
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
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
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
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
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
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
Description : Infrared spectroscopy provides valuable information about A. Molecular weight B. Melting point C. Conjugation D. Functional groups
Last Answer : Functional groups
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
Description : Mobile phase can be A. gas or liquid B. solid or liquid C. only solid D. gas only
Last Answer : gas or liquid
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
Description : A sliding contact bearing is operating under stable condition. The pressure developed in oil film is p when the journal rotates at N rpm. The dynamic viscosity of lubricant is μ and effective coefficient of ... to p and f) (d) f is directly proportional to μ and inversely proportional to N
Last Answer : (b) f is directly proportional to μ and N
Description : Select the correct statement about Naloxone: A. It equally blocks μ, κ and δ opioid receptors B. It blocks μ receptors at lower doses than those needed for others C. It blocks κ receptors at lower doses than those needed for others D. It blocks δ receptors at lower doses than those needed for others
Last Answer : B. It blocks μ receptors at lower doses than those needed for others
Description : Morphine has high affinity for the following opioid receptor(s): A. μ (Mu) B. κ (Kappa) C. δ (Delta) D. All of the above
Last Answer : A. μ (Mu
Description : The mammalian DNA polymerase involved in error correction is (A) DNA polymerase α (B) DNA polymerase β (C) DNA polymerase γ (D) DNA polymerase δ
Last Answer : Answer : B
Description : Insulin receptor is made up of (A) One α-and one β-subunit (B) Two α-and two β-subunit (C) Two, α two β-and two γ-subunit (D) One α, one β-one γ-and one δ-subunit
Description : In the insulin receptor, tyrosine kinase domain is present in (A) α-Subunits (B) β-Subunits (C) γ-Subunits (D) δ-Subunits
Description : The nucleotide binding site of G-proteins is present on their (A) α-Subunit (B) β-Subunit α- and β- (C) γ-Subunit (D) δ-Subunit
Last Answer : Answer : A
Description : One of the main functions of Vitamin K is cofactor for (A) Carboxylate for the formation of γ carboxyglutamate (B) Methylation of δ-adenosyl methionine (C) Carboxylation of biotin (D) One carbon transfer by tetrahydrofolate
Description : A pushdown automation M = (Q, Σ, Γ, δ, q0, z, F) is set to be deterministic subject to which of the following condition(s), for every q ∈ Q, a ∈ Σ ∪ {λ} and b ∈ Γ (s1) δ(q, a, b) contains at most one ... ) must be empty for every c ∈ Σ (A) only s1 (B) only s2 (C) both s1 and s2 (D) neither s1 nor s2
Last Answer : (C) both s1 and s2
Description : Out of the following pairs, which one does not have identical dimension? (1) Moment of inertia and moment of a force (2) Work and Torque (3) Angular momentum and Planck's constant (4) Impulse and Momentum
Last Answer : (1) Moment of inertia and moment of a force
Description : The unity of Planck's constant 'h' in the equation, E = hv is (A) J/s (B) J.S (C) J/kmol (D) kmol/J
Last Answer : (B) J.S
Description : Polarizability is defined as the a) Product of dipole moment and electric field b) Ratio of dipole moment to electric field c) Ratio of electric field to dipole moment d) Product of dielectric constant and dipole moment
Last Answer : b) Ratio of dipole moment to electric field
Description : The Laplacian of the magnetic vector potential will be a) –μ J b) – μ I c) –μ B d) –μ H
Last Answer : a) –μ J
Description : In electric fields, D= ε E. The correct expression which is analogous in magnetic fields will be a) H = μ B b) B = μ H c) A = μ B d) H = μ A
Last Answer : b) B = μ H
Description : Tesla metre per ampere (T. m/A) is the unit for the measurement of (A) Magnetic susceptibility (B) Magnetic moment (C) Permeability of free space (D) Flux density
Last Answer : Option C
Description : Which of the following best describes the carbon-chlorine bond of an alkyl chloride? (a) nonpolar; no dipole (b) polar; δ+ at carbon and δ– at chlorine (c) polar; δ– at carbon and δ+ at chlorine (d) ionic
Last Answer : polar; δ+ at carbon and δ– at chlorine
Description : Dipole moments are used to calculate the a) Electric field intensity b) Polarisation patterns c) Strength of the dipole in the field d) Susceptibility
Last Answer : b) Polarisation patterns
Description : The statement that "maximum wavelength of radiation is inversely proportional to the temperature" is __________ law. (A) Stefan-Boltzmann’s (B) Planck's (C) Wien's displacement (D) None of these
Last Answer : (C) Wien's displacement
Description : Which of the following statements are TRUE for damped vibrations? (P) . For a system having critical damping, the value of the damping ratio is unity and system does not undergo a vibratory motion. (Q) . Logarithmic decrement method ... Q only (B) P and S only (C) P, Q and R only (D) Q and S only
Last Answer : (C) P, Q and R only
Description : A vanadium electrically, if the magnetic moment (spin only) of the vanadium product is 1.73 B.M. and the mass of electrode decreases by 102 mg during
Last Answer : A vanadium electrically, if the magnetic moment (spin only) of the vanadium product is 1.73 B.M. and ... current efficiency 100%, At. wt. of V = 51)
Description : The spin-only magnetic moment of `[Fe(NH_(3))_(6)]^(3+) and [FeF_(6)]^(3-)` (in units of BM ) respectively are
Last Answer : The spin-only magnetic moment of `[Fe(NH_(3))_(6)]^(3+) and [FeF_(6)]^(3-)` (in units of BM ) respectively ... 1.73 C. 1.73 and 5.92 D. 5.92 and 5.92
Description : The magnetic moment (spin only) of `[NiCl_4]^(2-)` is
Last Answer : The magnetic moment (spin only) of `[NiCl_4]^(2-)` is A. 1.82 BM B. 5.46BM C. 2.82 BM D. 1.41 BM
Description : The spin-only magnetic moment [in units of Bohr magneton, `(mu_(B)` of `Ni^(2+))` in aqueous solution would be (atomic number of `Ni=28)`
Last Answer : The spin-only magnetic moment [in units of Bohr magneton, `(mu_(B)` of `Ni^(2+))` in aqueous solution would be ( ... ` A. 2.84 B. 4.8 C. 0 D. 1.73
Description : The spin only magnetic moment value ( in Bohr magneton units ) of `Cr(CO)_(6)` is :
Last Answer : The spin only magnetic moment value ( in Bohr magneton units ) of `Cr(CO)_(6)` is :
Description : The spin magnetic moment of cobalt in the compound , `Hg[Co(SCN)_(4)]` is :
Last Answer : The spin magnetic moment of cobalt in the compound , `Hg[Co(SCN)_(4)]` is : A. `sqrt(3)` B. `sqrt(8)` C. `sqrt(12)` D. `sqrt(24)`
Description : Magnetic dipole moment is a vector quantity directed from which direction?
Last Answer : South to north