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Chemistry Fsc Part 2 Chapter 10 Online Test MCQs With Answers
Question # 1
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 # 2
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 # 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
Which one of the following species is not an electrophile.
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HN3
Br
H+
BF3
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Question # 5
An alkyl halide may be converted to alcohol by
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Addition
Substitution
Dehydrohalogenation
Elimination
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Question # 6
Which one of the following is not a nucleophile.
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H2O
H2S
BF3
NH3
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Question # 7
Alkyl halides are considered to be very reactive compounds towards nucleophile because
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They have an electrophilic carbon
They have an electrophilic carbon and a good leaving group
They have an electrophilic carbon and a bed leaving group
They have a nucleophilic carbon and a good leaving group
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Question # 8
Grignard's reagent is reactive due to
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the presence of halogen atom
the presence of Mg atom
the polarity of C-Mg bond
none of the above
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Question # 9
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 # 10
The reactivity order of alkyl halides for a particular alkyl group is
Choose an answer
Fluoride > Chloride > Bromide > iodide
Chloride > Bromide > Fluoride > iodide
Bromide > iodide > chloride > Fluoride
Iodide > Bromide > Chloride > Fluoride
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Question # 11
Which products is not formed when ethyl alcohol reacts with SOCl2 in the presence of pyridine.
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Ethyl chloride
Hydrogen chloride
Sulphur di oxide
Sulphur tri oxide
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Question # 12
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 # 13
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 # 14
Which substance is used to convert Grignard reagent to alkane.
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H2O
NH3
Ethyl alcohol
All of these
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Question # 15
Which one of the following products will be formed in Wurtz reaction when sodium metal reacts with ethyl chloride in anhydrous ether.
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Methane
Ethane
Propane
Butane
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Question # 16
In primary alkyl halides, the halogen atom is attached to a carbon which is further attached to how many carbon atoms.
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One
Two
Three
Four
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Question # 17
Elimination biomolecular reactions involve.
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First order kinetics
Second order kinetics
third order kinetics
Zero order kinetics
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