ARC MOCK BOARD ORGCHEM Flashcards
An organic compound formed when an acid reacts with an alcohol.
A. ketone
B. aldehyde
C. ether
D. ester
D. ester
The simplest ketone is _________
A. cyclohexanone
B. acetone
C. lactone
D. ethyl methyl ketone
B. acetone
Hydrogenation of an alkene yields _________
A. alkane
B. alcohol
C. alkyne
D. aldehyde
A. alkane
An aldehyde that smells like green apple is ________
A. propanal
B. ethanal
C. butanal
D. methanal
B. ethanal
The acid responsible for the irritating sting of ants.
A. formic acid
B. citric acid
C. lactic acid
D. acetic acid
A. formic acid
Which of the following physical properties differ for each pair of enantiomers?
A. Solubility in ethanol
B. Direction of rotation of plane-polarized light
C. Index of refraction
D. Boiling point and melting point
B. Direction of rotation of plane-polarized light
Number of double bonds in geraniol
A. 2
B. 3
C. 1
D. 0
A. 2
Which of the following functional groups is present in the melamine molecule?
A. nitrile
B. alkene
C. amine
D. alkyne
C. amine
Fatty acid such as lauric acid and palmitic acid and oleic acid are long unbranched carboxylic acids consisting of 12 to 20 carbon atoms. Which type of fatty acid should people avoid ingesting, saturated or unsaturated and why?
A. Unsaturated, because the risk of cardiovascular disease is increased
B. Fatty acids are safe to ingest
C. Saturated, because the risk of cardiovascular disease is increased
D.. Both fatty acids, because the risk of cardiovascular disease is increased
C. Saturated, because the risk of cardiovascular disease is increased
Name the organic compound
CH3
| H3C\//\CH3
A. 1,1-dimethylpropene
B. 3,3-dimethyl-2-propene
C. 3-methyl-2-butene
D. 2-methyl-2-butene
D. 2-methyl-2-butene
Whatever the compound, the gram molecular weight contains the same number of molecules, known as Avogadro’s number. It is expressed as:
A. 6.02x10^23 ions per mole
B. 6.02x10^23 electrons per mole
C. 6.02x10^23 atoms per mole
D. 6.02x10^23 particles per mole
D. 6.02x10^23 particles per mole
Which of the following objects are chiral (assume that there is no label or other identifying mark)
a) Pair of scissors
b) Tennis ball
c) Paper clip
d) Beaker
e) The swirl created in water as it drains out of a sink or bathtub
A. achiral, chiral, chiral, achiral, chiral
B. chiral, achiral, chiral, chiral, achiral
C. chiral, achiral, achiral, achiral, chiral
D. chiral, chiral, chiral, chiral, chiral
C. chiral, achiral, achiral, achiral, chiral
Propanoic acid and methyl acetate are constitutional isomers, and both are liquids at room temperature. One of these compounds has a boiling point of 141°C; the other has a boiling point of 57°C. Which compound has a higher boiling point?
A. (1) propanoic acid
B. (2) methyl acetate
C. either (1) or (2)
D. same
A. (1) propanoic acid
O2 gas effused through a pinhole in 5 sec. How long will it take an equivalent amount of CO2 to effuse under the same conditions?
A. 3.8 s
B. 4.3 s
C. 2.2 s
D. 5.9 s
D. 5.9 s
Waxes are
A. Fatty acids alcohol esters
B. Salts of fatty acids
C. Alkyl sulfonates
D. Triglyceride
B. Salts of fatty acids
The rate of nucleophilic substitution reaction of tert-butyl bromide with OH– is found to be independent of the concentration of OH– at any instant. It can be inferred that the reaction is:
A. Zero-order
B. First-order (SN1)
C. Second-order (SN2)
D. Pseudo-first-orde
B. First-order (SN1)
Reduction of ethyl cinnamate using LiAlH4 produces the alcohol
A. 2-phenylprop-2-en-2-ol
B. 3-phenylprop-2-en-1-ol
C. 2-cyclohexylprop-2-en-2-ol
D. 3-cyclohexylprop-2-en-1-ol
B. 3-phenylprop-2-en-1-ol
Styrene undergoes ozonolysis to yield two carbonyl compounds. Which of the following pairs is produced by this reaction?
A. Benzoic acid and carbonic acid
B. Benzaldehyde and formaldehyde
C. Formaldehyde and benzoic acid
D. Acetone and benzaldehyde
B. Benzaldehyde and formaldehyde
In which reaction of alkyne can keto-enol tautomerism exist?
A. Markovnikov hydrohalogenation
B. Acid-catalyzed hydration
C. Ozonolysis
D. Catalytic hydrogenation
C. Ozonolysis
Which of the following compounds is not aromatic?
A. Anthracene
B. Tetrahydrofuran
C. Penanthrene
D. Hydroquinone
B. Tetrahydrofuran
Palmitate has 16 carbon atoms with
A. None of these
B. 3 double bond
C. 1 double bond
D. 2 double bonds
A. None of these
Reaction of benzene with chlorine gas to produce tri-chlorobenzene exemplifies a/an __________
A. elementary
B. series
C. parallel
D. autocatalytic
B. series
All of the following are o- and p- directing substituents EXCEPT
A. -NO2
B. -OH
C. -F
D. -OR
A. -NO2
How many isomers does xylene have?
A. 3
B. 1
C. 2
D. 4
A. 3
Which of the following is a ketone?
A. CH3COCH3
B. CH3OCH2CH3
C. CH3CHO
D. (CH3)2CHOH
A. CH3COCH3
Hydrogenation of one mole of allene (CH2=C=CH2) with 2 moles of hydrogen gas in the presence of Lindlar catalyst yields
A. propane
B. 2-propene
C. propylene
D. 2-butene
A. propane
All of the following contains carbonyl group EXCEPT
A. carboxylic acid
B. aldehyde
C. ketone
D. ether
D. ether
Which of the following is not an aliphatic hydrocarbon?
A. n-octane
B. n-tridecane
C. toluene
D. propylene
C. toluene
Name the organic compound
OH
|
// \
| || CH3
\\ / \ |
/\
CH3 CH3
A. 4-methyl-2-tert-octylphenol
B. 3-tert-butylphenol
C. 3,5-di-tert-butylphenol
D. none of these
B. 3-tert-butylphenol
Friedel-Crafts acylation of benzene with acetyl chloride in AlCl3 yields
A. chlorobenzene
B. cumene
C. acetophenone
D. styrene
C. acetophenone
Which of the following contains sp-hybridized carbon?
A. C4H8
B. C3H6
C. C5H8
D. C6H12
C. C5H8
Vinylbenzene is also known as
A. styrene
B. durene
C. cumene
D. mesitylene
A. styrene
Oxidation of isopropyl alcohol with KMnO4 yields
A. acetaldehyde
B. diethyl ether
C. acetone
D. acetic acid
C. acetone
Which of the following alcohols will undergo bimolecular nucleophilic substitution?
A. 2-methyl-2-propanol
B. 2-propanol
C. all of these
D. 1-propanol
D. 1-propanol
In Williamson synthesis of methyl isopropyl ether, the alcohol used is
A. isopropanol
B. linalool
C. ethanol
D. methanol
A. isopropanol
Hydrocarbon derivatives used as a main ingredient in automobile antifreeze
A. propylene
B. ethylene glycol
C. isopropanol
D. toluene
B. ethylene glycol
The following reagents will give an alkyl halide from an alcohol EXCEPT
A. SOCl2
B. PCl3
C. NaCl
D. PBr3
C. NaCl
Carbonyl compounds can be obtained by reduction using the following except
A. acyl chloride
B. ester
C. nitrile
D. amide
C. nitrile
Hexanedionic acid is also known as
A. glutamic acid
B. adipic acid
C. succinic acid
D. malonic acid
B. adipic acid
Reaction of alcohol and a carboxylic acid is known as
A. esterification
B. epoxidation
C. neutralization
D. none of these
A. esterification
Which of the following alkanes is gas at room temperature?
A. undecane
B. octane
C. eicosane
D. propane
D. propane
Hydrogenation of alkenes in the presence of a poisoned Pd catalyst produces
A. alkane
B. alkyl halide
C. alcohol
D. alkyne
A. alkane
Same chemical formula but different in geometric/structural orientation
A. prism
B. optimism
C. isomerism
D. polymerism
C. isomerism
Which of the following straight-chain alkanes can be conveniently prepared by Wurtz reaction?
A. nonane
B. heptadecane
C. icosane
D. none of these
C. icosane
In nucleophilic addition reactions of alkenes with HZ in which nucleophile Z attaches to more alkyl-substituted carbon and the H attaches to the carbon that already has the greater number of H atoms, the rule being followed by the reaction is
A. Huckel rule
B. Knoevenagel’s rule
C. none of these
D. Markovnikov’s rule
D. Markovnikov’s rule
In the Grignard synthesis of an alkane using sec-butyl bromide, which of the following alkane will be produced?
A. n-butane
B. isopentane
C. isobutane
D. none of these
A. n-butane
Addition of hydrazine to carbonyl compounds produces a/an
A. semicarbazone
B. hydrazone
C. oxime
D. imine
B. hydrazone
Addition of an alcohol to acyl halides produces
A. carboxylic acid
B. ester
C. none of these
D. carboxamide
B. ester
Cyclic esters are known as
A. osazone
B. acetals
C. lactones
D. diglyme
C. lactones
In each case, tell whether the bond is ionic, polar covalent, or nonpolar covalent: Br2, BrCl, HCl, SrF2, SiH4, CO, N2, CsCl
A. nonpolar covalent, nonpolar covalent, polar covalent, ionic, nonpolar covalent, polar covalent, nonpolar covalent, ionic
B. nonpolar covalent, nonpolar covalent, ionic, nonpolar covalent, polar covalent, nonpolar covalent, ionic
C. polar covalent, ionic, polar covalent, nonpolar covalent, nonpolar covalent, nonpolar covalent, polar covalent, polar covalent
D. nonpolar covalent, polar covalent, nonpolar covalent, nonpolar covalent, polar covalent, polar covalent, ionic, polar covalent
A. nonpolar covalent, nonpolar covalent, polar covalent, ionic, nonpolar covalent, polar covalent, nonpolar covalent, ionic
