Introductory Organic Chemistry TMA 2
Question 1: The decarboxylation of carboxylic acid yields which of the following compound
A. Alkylhalides
B. Alkanes
C. Alkynes
D. Alkenes
The answer is B. Alkanes
Question 2 : An alkyl group that has three carbon atoms bonded to the carbon atom taken as point attachment is calied ___
A. Primary
B. Quartenary
C. Secondary
D. Tertiary
The answer is D. Tertiary
Question 3 : Give the IUPAC nomenchlature for this structure CH,-CIH2-CH(CH)-CHCH:CH3)-CH2 CH2-CH
A. 4-ethyl-3-methyloctane
B. 3-ethyl-5-octane
C. 4-ethyl-6 -octane
D. 4-ethyl-5-methyl octane
The answer is A. 4-ethyl-3-methyloctane
Question 4 : In IUPAC nomenchlature of akenes, the____group is given the lowest possibie number
A. methyl
B. Parent
C. Functional
D. Leaving
The answer is C. Functional
Question 5: when 1,5- dihalogen derivatives of alkanes are treated with sodium or zinc, the product formed is____
Question 6: All these are methads of preparation f alkenes EXCEPT ____reaction method
A. Cannizaro
B. Retro Dests Alde
C. Wittig
D. Dehydration of alcohols
The answer is A. Cannizaro
Question 7 : The hydrohalogenation alkynes is in accordance with___
A. Anti markownikoffsl rule
B. Sayzeff rule
C. Markownikoffsl rule
D. Hunds rule
The answer is C. Markownikoffsl rule
Question 8:____is the functional group in this compound
CH-CH-CHO
A. Alkyne
B. Alkene
C. Aromatic
D. Amine
The answer is B. Alkene
Question 9:The saturated hydrocarbons contain the carbon and hydrogen atoms linked to each other by single bonds and are called____
A. Alkanes
B. Alkynes
C. Alkenes
D. Aromatic
Question 10: A benzene ring with OCH, at position one, F at position two and CHCH at position four is
A. 2-fluoro-4-ethylanisole
B. 4-ethyl-2-fluorotoluene
C. 2-fluoro-4-ethyl toluene
D. 4-ethy-2-fluoroanisole
The answer is D. 4-ethy-2-fluoroanisole
Question 11: in the ____ hydrocarbons, the carbon atom are linked to each other to form chain straight of branched .
A. Unsaturated
B. Aromatic
C. Aliphatic
D. Alicyclic
The answer is D. Alicyclic
Question 12: The ____ provide a backbone to which various functional groups may be attached to yieid an enormous variety of organic compounds
A. Hydrocarbons
B. Structural formula
C. Bonds
D. isomers
The answer is B. Structural formula
Question 13: What is the IUPAC name of tert-butyl?
A. 1-methylpropyl
B. Butyl
C. 2-methylpropyl
D. 1, 1-dimethylethyl
The answer is D. 1, 1-dimethylethyl
Question 14: ____is how a sigma (Φ) bond is formed
A. edge-on overlap of pure s and p orbitals
B. sideways overlap of p orbitals
C. sideways overlap of s and p orbitals
D. edge-on overlap of p orbitals
The answer is A. edge-on overlap of pure s and p orbitals
Question 15: Alkenes are readily hydroxylated (addition of hydroxyl groups) to form a dihydroxy compound (diol) known as _____
A. enols
B. phenol
C. glycols
D. ketone
The answer is C. Glycols
Question 16: Rapid decolourization of bromine solution serves as a test for the presence of the ___ in a compound
A. C. Triple bond C
B. C=C
C. C=C
D. C-C
The answer is C. C=C
Question 17: ____are the compounds that have identical molecular formulas but differ in the ways in which bonded to each other
A. Alkenes
B. Minomers
The answer is Isomers
Question 18: The amount of energy required to break a particular bond is called _____
A. potential energy
B. Bond energy
C. Kinetic energy
D. Bond dissociation energy
The answer is D.Bond dissociation energy
Question 19: The IUPAC name for the Structure
CH³-CH(CH)-C triple bond C-CH³
is _____
A. 3-methylpent-4-yne
B. 4-methylpent-2-yne
C. 2-methylpent-4-yne
D. 2-methylpent-3-yne
The answer is D. 2-methylpeny-3-yne
Question 20: The catalyst required for the hydrogenation of unsaturated hydrocarbons moderate temperature and pressure is ____
A. Nickel
B. Palladium
C. I Vanadium (v) Oxide
D. Iron
The answer is A. Nickel
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