4265294
Pregunta 1
Pregunta
What shape is a sp3 hybridised C?
Respuesta
-
Tetrahedral
-
Trigonal planar
-
Linear
Pregunta 2
Pregunta
What shape is a sp2 hybridised C
Respuesta
-
Tetrahedral
-
Trigonal planar
-
Linear
Pregunta 3
Pregunta
What shape is a sp hybridised C
Respuesta
-
Tetrahedral
-
Trigonal planar
-
Linear
Pregunta 4
Pregunta
Alkanes are unsaturated hydrocarbons. True or false?
Respuesta
- True
- False
Pregunta 5
Pregunta
Alkenes are [blank_start]more[blank_end] reactive than alkanes because the delocalised electrons make them susceptible to attack by electrophiles.
Respuesta
-
more
Pregunta 6
Pregunta
Alkenes undergo [blank_start]electrophilic addition reactions[blank_end]
Respuesta
-
electrophilic addition reactions
Pregunta 7
Pregunta
Alkynes are [blank_start]less[blank_end] reactive than alkenes.
Respuesta
-
less
Pregunta 8
Pregunta
Alkynes undergo
Respuesta
-
Substitution reactions
-
Electrophilic addition reactions but at a quicker rate than alkenes
-
Nucleophilic substitution reactions
-
Electrophilic addition reactions but at a slower rate than alkenes
Pregunta 9
Pregunta
Arenes are [blank_start]highly unsaturated[blank_end] and [blank_start]cyclic.[blank_end]
Respuesta
-
highly unsaturated
-
cyclic.
Pregunta 10
Pregunta
Arenas do not behave like alkenes and alkynes because they [blank_start]do not decolourise bromine water.[blank_end]
Respuesta
-
do not decolourise bromine water.
Pregunta 11
Pregunta
What type of molecule is benzene?
Respuesta
-
Trigonal planar
-
Planar
-
Linear
-
Tetrahedral
Pregunta 12
Pregunta
Benzene is a colourless liquid.
Respuesta
- True
- False
Pregunta 13
Pregunta
Boiling point of benzene?
Respuesta
-
90 degrees
-
100 degrees
-
70 degrees
-
80 degrees
Pregunta 14
Pregunta
Melting point of benzene
Respuesta
-
5.5 degrees
-
10 degrees
-
3 degrees
-
2.5 degrees
-
1 degrees
Pregunta 15
Respuesta
-
Aspirin
Pregunta 16
Respuesta
-
Ibuprofen
Pregunta 17
Respuesta
-
Diazepam
Pregunta 18
Pregunta
The halogen atom on an alkylhalide atom is attached to what other atom?
Respuesta
-
Trigonal sp2 carbon atom
-
Tetrahedral sp carbon atom
-
Trigonal sp3 carbon atom
-
Tetrahedral sp3 carbon atom
-
Trigonal sp carbon atom
Pregunta 19
Pregunta
The bond in alkylhalide are non-polar.
Respuesta
- True
- False
Pregunta 20
Pregunta
[blank_start]Cl-, Br- and I-[blank_end] are good leaving groups in nucleophilic substitution reactions.
Respuesta
-
Cl-, Br- and I-
Pregunta 21
Pregunta
Alkyl fluorides and fluorocarbons are relatively unstable.
Respuesta
- True
- False
Pregunta 22
Pregunta
Although the halogen-alkane bond is polar, they do not have a [blank_start]corresponding electron deficient region.[blank_end]
Respuesta
-
corresponding electron deficient region.
Pregunta 23
Pregunta
Although the halogen-alkane bond is polar, they do not [blank_start]interact strongly with water molecules.[blank_end]
Respuesta
-
interact strongly with water molecules.
Pregunta 24
Pregunta
Although the halogen-alkane bond is polar, they are generally _____
Respuesta
-
less lipophilic than corresponding non-halogenated molecules
-
more hydrophilic than corresponding non-halogenated molecules
-
more lipophilic than corresponding non-halogenated molecules
-
less hydrophilic than corresponding non-halogenated molecules
Pregunta 25
Pregunta
Tick all that is correct about halogens in drugs
Respuesta
-
Generally make the drug more lipophilic than corresponding non-halogenated molecules
-
Generally make the drug less lipophilic than corresponding non-halogenated molecules
-
Halogenated drugs are less readily metabolised than non-halogenated forms
-
Halogenated drugs are more readily metabolised than non-halogenated forms
Pregunta 26
Respuesta
-
DDT
Pregunta 27
Pregunta
Tick all that is correct about DDT
Respuesta
-
Persistent in the environment
-
Chemically unstable
-
Chemically stable
-
Highly resistant to metabolism
-
Not very resistant to metabolism
Pregunta 28
Pregunta
Short-chain alcohols are [blank_start]freely miscible with water.[blank_end]
Respuesta
-
freely miscible with water.
Pregunta 29
Pregunta
The interaction between short-chain alcohols and water can be explained [blank_start]by hydrogen bonding.[blank_end]
Respuesta
-
by hydrogen bonding.
Pregunta 30
Pregunta
A permanent dipole exists in alcohol because of ...
Respuesta
-
Electronegativity of the hydrogen
-
Electronegativity of the oxygen
-
Electropositive oxygen
-
Electropositive hydrogen
Pregunta 31
Pregunta
R-OH dissociates to give [blank_start]R-O-[blank_end]
Respuesta
-
R-O-
Pregunta 32
Pregunta
R-OH accepts a [blank_start]proton to give R-OH2+[blank_end]
Respuesta
-
proton to give R-OH2+
Pregunta 33
Pregunta
Acidity of alcohols depends on the [blank_start]R-group[blank_end]
Respuesta
-
R-group
Pregunta 34
Pregunta
pKa is the [blank_start]negative log[blank_end] of acid dissociation constant
Respuesta
-
negative log
Pregunta 35
Pregunta
Acidity of molecule is increased if it has [blank_start]electron withdrawing group[blank_end] near the -OH group
Respuesta
-
electron withdrawing group
Pregunta 36
Pregunta
Acidity of molecule is also dependent on if the rest of the molecule can [blank_start]stabilise the negative charge.[blank_end]
Respuesta
-
stabilise the negative charge.
Pregunta 37
Pregunta
Phenols are [blank_start]stronger acids[blank_end] than alcohols.
Respuesta
-
stronger acids
Pregunta 38
Pregunta
Phenoxide ions are [blank_start]resonance stabilised.[blank_end]
Respuesta
-
resonance stabilised.
Pregunta 39
Pregunta
What does the -OH functional group do and in what condition?
Respuesta
-
Release H+ in aqueous solution.
Pregunta 40
Pregunta
Relate the O- to the stability of the molecule
Respuesta
-
Resonance stabilises the negative charge
Pregunta 41
Pregunta
Fluorine is strongly electronegative.
Respuesta
- True
- False
Pregunta 42
Pregunta
The C-F bond in fluorine is polarised.
Respuesta
- True
- False
Pregunta 43
Pregunta
In fluorine, the partially positive charge on the carbon [blank_start]stabilises[blank_end] the negative charge on the hydroxyl group.
Respuesta
-
stabilises
Pregunta 44
Pregunta
Tick all that is correct about the reactivity of phenols.
Respuesta
-
Readily oxidised
-
Not so readily oxidised
-
Products are colourless because of the conjugated bonds
-
Products are frequently coloured because of the conjugated bonds
Pregunta 45
Pregunta
Contribution of alcohols to the properties of drugs: tick all that is correct about hydrogen bonding
Respuesta
-
Decreases the polarity of molecule
-
Increases the polarity of molecule
-
Adds to water solubility but generally not sufficient alone to ensure full water solubility
-
Ensures full water solubility
-
Involved in drug-target interactions as either a hydrogen bond donor or acceptor
Pregunta 46
Respuesta
-
Diethylether
Pregunta 47
Respuesta
-
Morphine
Pregunta 48
Pregunta
Tick all this correct about ethers
Respuesta
-
Do not have hydrogen attached to the oxygen
-
Can be hydrogen bond donors
-
Can be hydrogen bond acceptors
-
Show full water solubility
-
Show partial water solubility
-
Solubility increases with chain length
-
Solubility decreases with chain length
Pregunta 49
Pregunta
Ethers can form [blank_start]peroxides in contact with air.[blank_end]
Respuesta
-
peroxides in contact with air.
Pregunta 50
Pregunta
Ethers are generally non-reactive
Respuesta
- True
- False
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