chloroform is kept in dark coloured bottles because

Chloroform is kept in dark coloured bottles because

A. it reacts with clear glass

B. it undergoes chlorination in transparent glass bottles

C. it is oxidised to poisonous gas, phosgene in sunlight

D. it starts burning when exposed to sunlight

Answer : it is oxidised to poisonous gas, phosgene in sunlight

Solution :
Chloroform gets oxidised by air in sunlight to poisonous phosgene gas.
\[2CHC{{l}_{3}}+{{O}_{2}}\xrightarrow{h\nu }\underset{\text{Phosgene}}{\mathop{2COC{{l}_{2}}+2HCl}}\,\]

Releted MCQ Question on
Organic Chemistry >> Electrophilic Aromatic Substitution (Haloalkanes and Haloarenes)

Releted Question 1

The reaction of toluene with chlorine in presence of ferric chloride gives predominantly :

A. benzoyl chloride

B. $$m $$ - chlorotoluene

C. benzyl chloride

D. $$o $$ - and $$p $$ - chlorotoluene

View Answer

Releted Question 2

Bottles containing $${C_6}{H_5}I$$ and $${C_6}{H_5}C{H_2}I$$ lost their original labels. They were labelled $$A$$ and $$B$$ for testing. $$A$$ and $$B$$ were separately taken in test tubes and boiled with $$NaOH$$ solution. The end solution in each tube was made acidic with dilute $$HN{O_3}$$ and then some $$AgN{O_3}$$ solution was added. Substance B gave a yellow precipitate. Which one of the following statements is true for this experiment ?

A. $$A$$ and $${C_6}{H_5}C{H_2}I$$

B. $$B$$ and $${C_6}{H_5}I$$

C. Addition of $$HN{O_3}$$ was unnecessary

D. $$A$$ was $${C_6}{H_5}I$$

View Answer

Releted Question 3

Fluorobenzene $$\left( {{C_6}{H_5}F} \right)$$ can be synthesized in the laboratory

A. by direct fluorination of benzene with $${F_2}$$ gas

B. by reacting bromobenzene with $$NaF$$ solution

C. by heating phenol with $$HF$$ and $$KF$$

D. from aniline by diazotisation followed by heating the diazonium salt with $$HB{F_4}$$

View Answer

Releted Question 4

Reaction of $$trans$$ 2 - phenyl - 1 - bromocyclopentane on reaction with alcoholic $$KOH$$ produces

A. 1 - phenylcyclopentene

B. 3 - phenylcyclopentene

C. 4 - phenylcyclopentene

D. 2 - phenylcyclopentene

View Answer

Chloroform is kept in dark coloured bottles because

Releted MCQ Question on
Organic Chemistry >> Electrophilic Aromatic Substitution (Haloalkanes and Haloarenes)

The reaction of toluene with chlorine in presence of ferric chloride gives predominantly :

Fluorobenzene $$\left( {{C_6}{H_5}F} \right)$$ can be synthesized in the laboratory

Reaction of $$trans$$ 2 - phenyl - 1 - bromocyclopentane on reaction with alcoholic $$KOH$$ produces

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Electrophilic Aromatic Substitution (Haloalkanes and Haloarenes)

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Chloroform is kept in dark coloured bottles because

Releted MCQ Question on Organic Chemistry >> Electrophilic Aromatic Substitution (Haloalkanes and Haloarenes)

The reaction of toluene with chlorine in presence of ferric chloride gives predominantly :

Fluorobenzene $$\left( {{C_6}{H_5}F} \right)$$ can be synthesized in the laboratory

Reaction of $$trans$$ 2 - phenyl - 1 - bromocyclopentane on reaction with alcoholic $$KOH$$ produces

Practice More Releted MCQ Question on Electrophilic Aromatic Substitution (Haloalkanes and Haloarenes)

Practice More MCQ Question on Chemistry Section

Releted MCQ Question on
Organic Chemistry >> Electrophilic Aromatic Substitution (Haloalkanes and Haloarenes)

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Electrophilic Aromatic Substitution (Haloalkanes and Haloarenes)