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A a substance which cannot be further subdivided by chemical methods.
Pharmaceutical Organic Chemistry Pharmacist Competitive Exams
Q. A a substance which cannot be further subdivided by chemical methods.
Ans → element
Explanation →
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Q. A process in which a compound of one oxidation state changes to compounds two or more oxidation states
Ans → disproportionation
Explanation →
Q. The process whereby a molecule is split into simpler fragments which may be smaller molecules, atoms, free radicals or ions.
Ans → dissociation
Explanation →
Q. Some atoms can share two pairs of electrons to form a double bond (two covalent bonds).
Ans → double bond
Explanation →
Q. Intensely coloured compounds applied to a substrate. Colours are due to the absorption of light to give electronic transitions.
Ans → dyestuffs
Explanation →
Q. A conformation in which substituents on two attached saturated carbon atoms overlap when viewed as a Newman projection.
Ans → eclipsed
Explanation →
Q. The particular order in which electrons are arranged in an atom or molecule.
Ans → electronic configuration
Explanation →
Q. If an electron passes from one orbital to another an electronic transition occurs and there is the emission or absorption of energy corresponding to the difference in energy of the two orbitals known as
Ans → electronic transition
Explanation →
Q. An overall reaction in which an electrophile binds to a substrate with the expulsion of another electrophile is known as
Ans → electrophilic substitution
Explanation →
Q. A a substance which cannot be further subdivided by chemical methods.
Ans → element
Explanation →
Q. A a pair of isomers which are related as mirror images of one another.
Ans → enantiomers
Explanation →
Q. A graph of the energy of a reaction against the progress of the reaction.
Ans → energy diagram
Explanation →
Q. A thermodynamic quantity which is a measure of the degree of disorder within any system.
Ans → entropy
Explanation →
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Q. Name term that describes a solid of regular shape and the presence of three-dimensional order on the level of atomic dimensions, for a given molecule.
Ans → crystalline
Explanation →
Q. A a DNA molecule resulting from the cutting and insertion of DNA from one organism into the DNA of another organism, resulting in a new combination of genetic material
Ans → recombinant DNA molecule
Explanation →
Q. The regulatory enzyme in the pyrimidine biosynthesis in animals is
Ans → Carbamoyl phosphate synthetase II
Explanation →
Q. The electrons of an atom that are highest in energy and in the outermost orbitals.
Ans → Valence Electrons
Explanation →
Q. A conformation in which substituents on two attached saturated carbon atoms overlap when viewed as a Newman projection.
Ans → eclipsed
Explanation →
Q. Name a differential staining technique that distinguishes bacteria based upon their cell wall structure
Ans → Gram stain procedure
Explanation →
Q. Plasma lipoprotein that is inversely correlated with coronary heart disease is
Ans → HDL
Explanation →
Q. Reactions in which an unsaturated system is saturated or part saturated by the addition of a molecule across the multiple bond.
Ans → addition reactions
Explanation →
Q. Name the chronic bacterial infection of peripheral nervous tissues caused by the acid-fast bacterium,
Ans → Hansen’s Disease
Explanation →
Q. A type of endocytosis in which extracellular ligands are targeted to specific cells through their binding to specific cell surface receptors
Ans → receptor-mediated endocytosis
Explanation →
Q. The the joining of two complementary single-stranded DNA molecules
Ans → hybridization
Explanation →
Q. A a term applied to an atom or molecule having one or more free valencies.
Ans → radical
Explanation →
Q. Antineoplastic Agents which is specific tyrosine kinase receptor inhibitor that is used in the therapy of Philadelphia chromosome-positive chronic myelogenous leukemia and gastrointestinal stromal tumors
Ans → Imatinib
Explanation →
Q. Relative amount of the administered dose of a drug that reaches systemic circulation from a certain dosage form in comparison to the amount that reaches the systemic circulation by iv administration
Ans → bioavailability
Explanation →
Q. Process that occurs when the vapor pressure of the saturated aqueous solution of a substance is less than the vapor pressure of water in the ambient air.
Ans → deliquescence
Explanation →
Q. Name the graph modeling the number of cells in a culture over time
Ans → growth curve
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. Name a method of acid-fast staining that does not use heat to infuse the primary stain, carbolfuchsin, into acid-fast cells
Ans → Kinyoun technique
Explanation →
Q. The process of separation of a racemate into its two enantiomers by means of some chiral agency.
Ans → resolution
Explanation →
Q. The deposit of a drug in a body created by injection or by a similar mode of introduction to form a source of slow release.
Ans → depot
Explanation →
Q. A a pair of isomers which are related as mirror images of one another.
Ans → enantiomers
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. 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. Vehicle often ethanol used in combination to increase the solubility of drugs.
Ans → cosolvent
Explanation →
Q. Solid substances that are not crystals. These solids consist of randomly oriented molecules. Solids without definite shape consist of randomly oriented molecules.
Ans → amorphous
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. Name the plasmid containing genes encoding proteins that make a bacterial cell resistant to one or more antibiotics
Ans → R plasmid
Explanation →