Review Blue 3
Chemical Knowledge Assessment Quiz
Welcome to the Chemical Knowledge Assessment Quiz! This comprehensive quiz tests your understanding of various concepts in chemistry, including organic compounds, acid-base theories, and biochemical interactions.
Get ready to challenge your knowledge with questions that cover:
- Acid-base chemistry
- Organic synthesis and reactions
- Biochemical pathways
- Fun
ctional group identification
Which of the following statements is untrue?
Ionization and dissociation are synonymous
PKa is only applicable to water as the solvent
In solvents having a low dielectric constant, dissociation may be slight
PH is the log of the reciprocal of the hydrogen Ion concentration
PKa is the negative log of the ionization Constatant
Ph is defined as the
Negative log of the hydrogen ion concentration
Negative log of the ionization constant
Sum of the hydrogen ion concentration and the hydroxyl ion concentration
Log of the hydrogen ion concentration
For a week acid, when the pH of the solution is the same as that of the pKa of the acid, the percentage of ionization of the acid will be:
25%
50%
75%
100%
Which of the statement regarding animes is not true?
They can be primary, tertiary and secondary depending on the number of substituents attached to the nitrogen atom
Amines produce eracemic mixtures that can be resolved easily
In synthesizing an amine, optical activity is not of assurance
Animes undergo pyramidal inversion
The Tollen’s reagent is used to identify functional group/s? I. Ketones II. Esters III. Aldehydes
I only
II only
III only
I and III
I and II
Primary alcohols, on oxidation, gives carboxylic acids but the oxidative reaction can be stopped after producing the aldehyde from the primary alcohol by using what oxidizing agent?
KMnO4
H2CrO4
PCC
DIBAH
THF
The use of this anti-ulcer agent has been limited due to its drug interactions & potential to cause problems in male patients taking them due to incidence of gynecomastia & impotence
A. Pantoprazole
B. Cimetidine
C.Sucralfate
Misoprostol
Pirenzepine
Which of the following antihistamines is now commonly used as an appetite stimulant due to its CNS depressant properties?
A. Meclizine
B. Cylcizine
C.Buclizine
Hydrozyzine
Chlrocyclizine
When are mammalian cells chose as host cells for expression of the rDNA molecule?
A. When the protein product requires a post translational modification that other host cells are in capable of doing so
When the cloning vector is plasmid
When the paharmacist chooses to do so
When high yields of the protein product is desired
When the cloning vector is a Bacteriophage which does not have an origin of replication
Which of the following statement/s is/are true? I. Endonucleases may make their cut within DNA molecules, so as to form stickyrends which d not readily anneal or revert back to the parent double stranded DNA molecule II. When blunt ends are formed after a cut an endonuclease, these two strands are difficult to anneal or to revert back to the parent double stranded DNA molecule III. The gene to be inserted into a cloning vector is attached with a gene enconding for antibiotic resitance for ease of isolation & selection of cells that have acquired the rDNA molecule
I and II
II and III
I, II, and III
I only
II only
Which of the following statement/s is/are true regarding bioprecursor drugs? I. Antivirals are nucleoside analogs that undergo phosphorylation as a mechanism of activation II. Mechanism of activation involve redox & hydrolysis III. Proton pump inhibitors undergo chemical activation to bind H+/K+ ATPase in
A. I, II & IV
B. I. III & IV
C.I & III
II & IV
. II, III & IV
The hybridization of Carbon in ethane is:
Sp
Sp2
Sp3
Sp4
This undergoes hydrolysis in the presence of heat producing phosgene.
CH3Cl
CH2Cl2
CCl4
CH4
The oxidation of alkene with dilute KMno4 in cold base produce:
Alcohol
Ether
Carbolyxic acid
Ketone
Hat gas can be prepared from the acid catalyzed dehydration of athanol?
Methane
Ethene
Ethyne
NOTA
Carbon in organic compounds is analyzed as carbon dioxide using
Lime water
Soda Lime
Cuprous oxide
Lead acetate
This is employed for the purification of organic compounds which partially or completely decompose before their normal boiling points are reached.
A. Steam distillation
B. Simple distillation
Fractional distillation
Vacuum distillation
Acetophenone undergo nucleophilic substitution with –OH in the presence of:
NaClO4
NaClO3
NaClO
NaClO2
Methyl salicylate is prepared from the reaction of salicylic acid and:
NAOH
CH3OH
CH3OCCOOH
CH3OCH3
Saponification is an alkali hydrolysis of
RCOR
ROH
RCOOR
RCOH
The following compounds yield a violet color to FeCl3 test except:
Benzoic acid
Salicylic acid
Methyl salicylate
ASA
Found in the urine in the form of hippuric acid.
Salicylic acid
Methyl salicylate
Acetylsalicylic acid
Benzoic acid
Aniline is liberated from acetanilide when treated with:
HCl
NaCl
HNO3
NaOH
Found in the urine in the form of hippuric acid.
Salicylic acid
Methyl salicylate
Acetylsalicylic acid
Benzoic acid
Aniline is liberated from acetanilide when treated with:
HCl
NaCl
HNO3
NaOH
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