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Chemistry Fsc Part 2 Chapter 10 Online Test MCQs With Answers
Question # 1
The general representation for Grignard reagent is.
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RMgX
ReMgX
RXMg
RMgX2
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Question # 2
Which compound is formed, when CH
3
OH reach with CH
3
- Mg -Br
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Ethane
Methane
Ethanol
Acetone
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Question # 3
When CO
2
is made to react with ethyl-magnesium iodide followed by acid hydrolysis, the product formed is
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Propane
Propanoic acid
Propanal
Propanol
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Question # 4
SN
2
reactions can be best carried out with
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primary alkyl halides
secondary alkyl halides
tertiary alkyl halides
All the three
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Question # 5
Nucleophilic substitution reactions, which are completed in two steps are called as.
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SN1
SN2
E1
E2
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Question # 6
Which one of the following will be required to form ethene from ethyl chloride.
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Alcoholic KOH
Aqueous KOH
Alkaline KMnO4
Bromine
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Question # 7
The most reactive Alkyl halide is
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Alkyl Iodide
Alkyl Bromide
Alkyl fluoride
Alkyl Chloride
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Question # 8
Which one of the following alcohols will be formed when ethyl magnesium bromide reacts with acetone.
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Primary alcohol
Secondary alcohol
Tertiary alcohol
Dehydrin alcohol
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Question # 9
SN2 reactions can be best carried out with
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Primary alkyl halides
Secondary alkyl halides
Tertiary alkyl halides
All the three
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Question # 10
In which process, alkyl halide is not produced.
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Reaction of alcohol with halogen acid
Reaction of Grignard reagent with water
Reaction of alcohol with phosphorous pentachloride
Action of alkene on halogen acid
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Question # 11
For which mechanisms, the first step involved is the same.
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E2 and E2
E2 and SN2
SN1 and E2
E1 and SN1
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Question # 12
For ----------------- Mechanism, the first step involved is the same
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E1 and E2
E2 and S
N
2
S
N
1 and S
N
2
E1 and S
N
1
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Question # 13
Elimination biomolecular reactions involve.
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First order kinetics
Second order kinetics
third order kinetics
Zero order kinetics
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Question # 14
Secondary alkyl halides are those in which halogen atom is attached with a carbon atom which is further attached to.
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One beta carbon
Two beta carbon
Three beta carbon
Four beta carbon
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Question # 15
For which mechanisms, the first step involved is the same
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E
1
and E
2
E
2
and SN
2
E
1
and E
2
E
1
and SN
1
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Question # 16
The reactivity order of alkyl halides for a particular alkyl group is.
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Fluoride > Chloride > Bromide > Iodide
Chloride > Bromide >Chloride > Fluoride
Iodide > Bromide > Chloride > Fluoride
Bromide > Iodide > Chloride > Fluoride
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Question # 17
The reacts with halogen acids to form alkyl halide the process is known as.
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Halogenation
Hydrohalogenation
Hydrogenation
Dehydrohalogenation
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