Question # 1

The reactivity order of alkyl halides for a paricular alkyl group is

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Fluoride > chloride > bromide > iodide

Chloride > bromide > fluoride > iodide

Iodide > bromide > chloride > fluoride

Bromide > iodide > chloride > fluoride

The final product formed by distilling ethyl alcohol with excess of Cl₂and Ca(OH)₂is

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CH₃CHO

CCl₃CHO

CHCl₃

(CH₃)₂O

Cyanoform is ________ acid in nature than the chloroform. The missing word is

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Stronger

Weaker

Amphoteric

Neutral

Dehydrohalogenation of alkyl halides produces

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Alcohol

Alkane

Alkene

Alkyne

Chlorobenzene on heating with aqueous NH₃under pressure in the presence of cuprous chloride gives

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Benzamide

Nitrobenzene

Aniline

Chloroaminobenzene

When carbon dioxide is passed through the R - Mg - X is produced

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Any carboxylic acid

Propanoic acid

Propanedioic acid

None of these

SN₂reactions can be best carried out with:

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Prl. alkyl halide

Sec. Alkyl halide

Ter. Alkyl halide

All of three

Which reaction is example of nucleophilic substitution

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2-Bromopentane is heated with potassium ethoxide in ethanol . The major product obtained is

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2-Ethoxypentane

Pent-1-ene

cis-Pent-2-ene

trans-Pent-2-ene

The rate of E₁reaction depends upon

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The concentration of substrate

The concentration of nucleophile

THe concentration of substrate as well as nucleophile

None of the above

By reaction Grignard's reagent with the HCHO we get

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1° - alcohol

2° - alcohol

3° - alcohol

All of these

Benzene reacts with chlorine to form benzene hexachloride in presence of

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Nickel

AlCl₃

Bright sunlight

Zinc

An electrophile may be

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Positive

Negative

Neutral

Both c and a

Best medhod of preparation of alkyl halide from alcohals is by its reaction with:

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HX

SOCl₂

Px₅ and PX₃

All

Grignard reagent is not prepared in aqueous medium but prepared in ether medium because

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The reagent is highly reactive in ether

The reagent does not react with water

The reagent becomes inactive in water

The reagent reacts with water

Which of the following is a nucleophile

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OH

CH(CH₃)₃

CH₃⁺

CH₃CH₂CH₃

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