Question # 1

Grignard 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

For ----------------- Mechanism, the first step involved is the same

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E1 and E2

E2 and S_N2

S_N1 and S_N2

E1 and S_N1

Which one of the following reactants will be required to form ethyl alcohol form ethyl bromide.

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Alcoholic KOH

Aqueous KOH

Alkaline KMnO4

Sodium metal in ether

When CO₂is made to react with ethyl-magnesium iodide followed by acid hydrolysis, the product formed is

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Propane

Propanoic acid

Propanal

Propanol

SN₂reactions can be best carried out with

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primary alkyl halides

secondary alkyl halides

tertiary alkyl halides

All the three

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

Cyanogen chloride reacts with ethyl magnesium bromide to give

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CH₃CH₂Cl

CH₃CH₂Br

C₄H₁₀⁺

CH₃CH₂CN

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

SN2 mechanism involves

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1st order kinetic

2nd order kinetic

3rd order kinetic

Zero order kinetic

When CO2 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

------------------- is not a nucleophile

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H₂O

NO₃

BF₃

NH₃

When CO₂is made to react with ethyl magnesium iodide, followed by acid hydrolysis, the product formed is

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propane

propanoic acid

propanal

propanol

Which alkyl halide does not form Grignard's reagent.

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CH3-Br

CH3-Cl

CH3- F

CH3-I

Which one of the following species is a nucleophile

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CH3

(CH3)2 C

BF3

OH-

Which one of the following molecules does not form alcohol when reacts with a Grignard reagent.

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Formaldehyde

Acetaldehyde

Propanone

CO2

The general representation for Grignard reagent is.

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RMgX

ReMgX

RXMg

RMgX2

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