WorksheetsOrganic Chemistry 1 Practice Quiz
Total questions: 22
Worksheet time: 18mins
Which of the following compounds exhibit the least acidity?
Hydrogen Iodide (H-I)
Hydrogen Chloride (H-Cl)
Hydrogen Bromide (H-Br)
Hydrogen Fluoride (H-F)
Which compound possess the strongest bond?
Hydrogen Iodide (H-I)
Hydrogen Chloride (H-Cl)
Hydrogen Bromide (H-Br)
Hydrogen Fluoride (H-F)
What is the correct name of the representation of the following compounds?
Structural Formula
Line Angle Formula
Condensed Formula
Molecular Formula
This line-angle formula represents
4-butyl-3-ethyl-2-methyl heptane
4-ethyl-3-methyl-5-propyl nonane
3-sec-butyl-4-propyl octane
2,3-diethyl-4-propyl octane
How many structural isomers are possible in butane?
(a)
The condensed formula of this compound is
CH3CH(CH3)CH(CH2CH3)CH(Br)CH3
CH3CH(CH2)CH(CH2CH3)CH(Br)CH3
CH3CH2CH(CH3)(Br)CH3
CH3CH2CH(CH2CH3)CH(Br)CH3
From right to left, which carbon(s) is/are sp3 hybridized?
1 only
3 only
2 & 3 only
None
Which orbitals overlap to produce the single bond between nitrogen and hydrogen respectively in an ammonium ion?
sp3 – sp3
s – s
sp2 – s
sp3 – s
What is meant by the phrase 'sp3 hybridized' in terms of an atom?
The atom is bonded to four (4) other atoms
The atom only has sigma bonds attached to it
The atom has one unhybridized p orbital
The s and p orbitals are degenerate
All of the above except C
The H-C-H bond angle in alkanes is always near
(a)
Branched alkanes have lower boiling points than straight-chain alkanes because branched chain alkanes
require more energy to overcome its attractive forces
possess greater surface area
are bulky with less points of contact (less surface area) for intermolecular interactions
None of the above
In a compound whose straight chain has less carbon atoms than its ring, which constituent forms the basis of the name?
Straight Chain
Ring
Which type of cracking produces alkanes free from sulphur and nitrogen impurities through the use of heat and hydrogen?
Thermo-catalytic cracking
Hydro cracking
Alkanes are the least reactive of organic compounds because they
possess pi bonds
lack functional groups
possess sigma and pi bonds
possess only weak intermolecular interactions between C and H atoms
B & D
In balancing alkane combustion reaction equations
the number of moles of CO2 is half the number of C atoms in the alkane molecule
the number of moles of H20 is equivalent to the number of H atoms in the alkane molecule
the number of moles of H20 is equivalent to half the number of H atoms in the alkane molecule
the number of moles of O2 is the sum of the moles of oxygen in CO2 and H2O divided by 2
C & D
Alkanes are obtained by a separation technique known as
(a)
There is a regular increase in heat of combustion for each additional CH2 group in an alkane
TRUE
FALSE
Branched alkanes have/are
lower heats of combustion
less stable
higher heats of combustion
more stable
A & D
Which of the following DOES NOT occur when terminating a free radical substitution reaction of an alkane?
Fewer reactive intermediates (radicals) are formed in this stage
Reactive intermediates (radicals) react with stable/neutral molecules (alkanes)
Radicals react with each other
Neutral molecules are formed
The rate determining step of a reaction is always the... slowest/fastest step?
(a)
Which would have the strongest van der waal's forces?
Straight chain alkane
Branched alkane
Which IS NOT a characteristic of a free radical?
It is highly reactive
It is generated in the termination stage of substitution
it possesses unpaired e-
It is generated in the initiation stage of substitution
