In electrophilic aromatic substitution reactions, nitro group is meta-directing because the nitro group

Nitro group is meta-directing in electrophilic aromatic substitution reactions?

A

increases electron density at meta-position

B

increases electrons density at ortho and para-positions

C

decreases electron density at meta-position

D

decreases electron density at ortho and para-positions

Which of the following aromatic sulfonation is not an electrophilic substitution reaction?

A

Nitration

B

Halogenation

C

Alkylation

D

None of the mentioned

Which of the following is the most activating in electrophilic aromatic substitution?

A

-NO2

B

-NHCOCH3

C

-CN

D

-NH2

What is meant by an Electrophilic nitro group?

A

Repels electron

B

Attracts electron

C

Free radical atoms

D

Attract protons

In Aromatic Compounds Substitution, direct substitution of iodine into the benzene nucleus is feasible only in the presence of what?

A

Azo compound

B

Reducing agent

C

Oxidizing agent

D

None of the mentioned

Aromatic substitution reactions, including sulfonation, are conceived in two steps.

A

True

B

False

Silicon nanowires can be employed for the detection of nitro-aromatic explosives.

A

True

B

False

Where has the role of aromatic nitro compounds as an inhibitor or retarder been unsuccessful?

A

styrene polymerization

B

vinyl acetate polymerization

C

acrylate polymerization

D

vinyl chloride polymerization

Which of the following can be used for decontamination of nitro aromatic pesticides from the soil?

A

Ex situ techniques

B

In situ techniques

C

Poly-nitro derivatives

D

Amino aromatics

Nitro-aromatic compounds found in the environment are known as which of the following?

A

Water

B

Oxygen

C

Carbon

D

Recalcitrant

In electrophilic aromatic substitution reactions, nitro group is meta-directing because the nitro group

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