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The representation of a compound by two or more canonical structures in which the valence electrons are rearranged to give structures of similar probability.
Pharmacy Pharmacist Competitive Exams
Q. The representation of a compound by two or more canonical structures in which the valence electrons are rearranged to give structures of similar probability.
Ans → resonance
Explanation →
This question is taken from the test/quiz post: one liner| organic| B.pharmacy| Pharmacy liners |organic chemistry| B.pharmacy file-1 - attemp/practice
More oneliners in - one liner| organic| B.pharmacy| Pharmacy liners |organic chemistry| B.pharmacy file-1
Q. An instrument used to measure the amount of rotation of plane polarized light by a compound, generally prepared in a solution
Ans → polarimeter
Explanation →
Q. A group that is used to protect a functional group from unwanted reactions. After application the protecting group can be removed to reveal the original functional group.
Ans → protecting group
Explanation →
Q. An equimolar mixture of the two enantiomeric isomers of a compound.
Ans → racemic mixture
Explanation →
Q. A a term applied to an atom or molecule having one or more free valencies.
Ans → radical
Explanation →
Q. A chemical processes in which the proportion of more electronegative substituents is decreased, or the charge is made more negative, or the oxidation number is lowered.
Ans → reduction
Explanation →
Q. The process of separation of a racemate into its two enantiomers by means of some chiral agency.
Ans → resolution
Explanation →
Q. The representation of a compound by two or more canonical structures in which the valence electrons are rearranged to give structures of similar probability.
Ans → resonance
Explanation →
Q. A process in which the forward reaction can reach an equilibrium with the reverse reaction.
Ans → reversible process
Explanation →
Q. A formal non-ambiguous, nomenclature system for the assignment of absolute configuration of structure to chiral atoms, using the Cahn, Ingold and Prelog priority rules.
Ans → R,S convention
Explanation →
Q. The term given to organic molecules which contain no multiple bonds.
Ans → saturated
Explanation →
Q. The sideways projection of a carbon-carbon single bond and the attached substituents.
Ans → sawhorse projection
Explanation →
Q. An instrument that measures the degree of absorption (or emission) of electromagnetic radiation by a substance.
Ans → spectrophotometer
Explanation →
Q. When a complex is formed between a metal ion and an a ligand in solution, the equilibrium may be expressed by a constant which is related to the free energy change for the process
Ans → stability constant
Explanation →
Q. An instrument used to measure the amount of rotation of plane polarized light by a compound, generally prepared in a solution
Ans → polarimeter
Explanation →
Q. A group that is used to protect a functional group from unwanted reactions. After application the protecting group can be removed to reveal the original functional group.
Ans → protecting group
Explanation →
Q. An equimolar mixture of the two enantiomeric isomers of a compound.
Ans → racemic mixture
Explanation →
Q. A a term applied to an atom or molecule having one or more free valencies.
Ans → radical
Explanation →
Q. A chemical processes in which the proportion of more electronegative substituents is decreased, or the charge is made more negative, or the oxidation number is lowered.
Ans → reduction
Explanation →
Q. The process of separation of a racemate into its two enantiomers by means of some chiral agency.
Ans → resolution
Explanation →
Q. The representation of a compound by two or more canonical structures in which the valence electrons are rearranged to give structures of similar probability.
Ans → resonance
Explanation →
Q. A process in which the forward reaction can reach an equilibrium with the reverse reaction.
Ans → reversible process
Explanation →
Q. A formal non-ambiguous, nomenclature system for the assignment of absolute configuration of structure to chiral atoms, using the Cahn, Ingold and Prelog priority rules.
Ans → R,S convention
Explanation →
Q. The term given to organic molecules which contain no multiple bonds.
Ans → saturated
Explanation →
Q. The sideways projection of a carbon-carbon single bond and the attached substituents.
Ans → sawhorse projection
Explanation →
Q. An instrument that measures the degree of absorption (or emission) of electromagnetic radiation by a substance.
Ans → spectrophotometer
Explanation →
More one-liners in - Pharmacy
Q. The process wherein orbitals of similar energies are combined to form a set of equivalent ‘hybrid’ orbital.
Ans → hybridization
Explanation →
Q. The sideways projection of a carbon-carbon single bond and the attached substituents.
Ans → sawhorse projection
Explanation →
Q. Name the antibody dimer primarily found in breast milk, mucus, saliva, and tears
Ans → IgA
Explanation →
Q. The vitamin that is regarded as a vitamin in search of a disease
Ans → Vitamin E (tocopherol)
Explanation →
Q. When a substance, called a solvent, is added to a suspension to reduce the concentration.
Ans → dilution
Explanation →
Q. For a substance, the time required for the amount of a drug or a substance in a biological system to be reduced to one-half of its value by biological processes when the rate of removal is approximately exponential.
Ans → biological half life
Explanation →
Q. a term which may be applied to any asymmetric object or molecule. The property of non-identity of an object with its mirror image
Ans → chirality
Explanation →
Q. the energy required to break a particular bond by a homolytic process.
Ans → bond energy
Explanation →
Q. Potentially damaging immune response against an antigen is called
Ans → hypersensitivity
Explanation →
Q. Name of the peptide believed to be involved in the transport of amino acids
Ans → Glutathione
Explanation →
Q. Which are the essential fatty acids that need to be supplied in the diet.
Ans → PUFA
Explanation →
Q. The major dietary energy sources, besides their involvement in cell structure and various other functions is
Ans → Carbohydrates
Explanation →
Q. substance(s) is(are) involved in the regulation of plasma calcium level
Ans → Calcitriol , Parathyroid hormone, Calcitonin
Explanation →
Q. Used as processing aid in tablet and capsule manufacturing, to facilitate the movement of the formulation into the dye and punch and to reduce the energy of compression.
Ans → lubricant
Explanation →
Q. stereoisomeric structures which are not enantiomers (mirror images) of one another.
Ans → diastereomers
Explanation →
Q. It occurs when a hydrogen atom has an electromagnetic attractive interaction with an electronegative atom.
Ans → Hydrogen Bonding
Explanation →
Q. Chemically modified form of a pharmacologically active compound that has to undergo biochemical or chemical transformation before exhibiting its pharmacological effect.
Ans → prodrug
Explanation →
Q. Organic substances occurring naturally, which are basic, forming salts with acids. The basic group is usually an amino function.
Ans → alkaloid
Explanation →
Q. Initial, typically larger than the maintenance dose of a drug given to a patient at the start of pharmacotherapy.
Ans → loading dose
Explanation →
Q. reactions which proceed by means of a set of repeating cyclical steps, e.g. the free radical addition of hydrogen bromide to an alkene.
Ans → chain reaction
Explanation →