Chemical Properties of Alcohol

Q. When glycerol is treated with excess $HI$, it produces:

1. 2-iodopropane
2. allyl iodide
3. propene
4. glycerol triiodide

Q.

In the Victor Meyer’s test, the colours given by 1 ° 2 ° and 3 ° alcohols are respectively:

1. Red, colourless, blue

2. Red, blue, colourless

3. Colourless, red, blue

4. Red, blue, violet

Q. The compound A, B and C in the following reaction sequence are (in the order A, B, C):
$C{H}_3-C{H}_2-OH\stackrel{PB{r}_3}{\to }\left(A\right)\stackrel{alc.KOH}{\to }\left(B\right)\stackrel{B{r}_2/CC{l}_4}{\to }\left(C\right)$

1. $C_2{H}_{5}Br,C{H}_3-C{H}_2-OH,C{H}_{3}CHB{r}_2$
2. $C_2{H}_{5}Br,CH\equiv CH,C{H}_2=CHBr$
3. $C_2{H}_{5}Br,C{H}_2=C{H}_2,Br-C{H}_2-C{H}_2-Br$
4. $C_2{H}_{5}Br,C{H}_{3}C{H}_{2}OH,BrC{H}_2-C{H}_{2}Br$

Q. This compound reacts with TsCl and then gets reduced by $LiAl{H}_4$ to form:

1. 
2. 
3. 
4. 

Q.

Does phenol give victor Mayer test?

Q.

Which compound is formed when CH₃OH reacts with CH₃-Mg-X[CPMT 1977, 89]

1. Acetone

2. Alcohol

3. Methane

4. Ethane

Q.

Predict the conjugate acids for the following brönsted bases: ${{\mathrm{NH}}_2}^{-}$, ${\mathrm{NH}}_3$ and ${\mathrm{HCOO}}^{-}$

Q. Identify the correct order of boiling points of the following compounds:
1. $C{H}_{3}C{H}_{2}C{H}_{2}C{H}_{2}OH$
2. $C{H}_{3}C{H}_{2}C{H}_{2}CHO$
3. $C{H}_{3}C{H}_{2}C{H}_{2}COOH$

1. $1>2>3$
2. $3>1>2$
3. $1>3>2$
4. $3>2>1$

Q. Which of the following statements are correct for the given reaction:
$R-OH\stackrel{X^{\theta }}{\to }R-X+\stackrel{\theta }{O}H$

1. Reaction will not take place because is poor leaving group; $X^{\theta }$ is weak base.
2. Reaction will not take place because $O{H}^{-}$is poor leaving group and
   $X^{\theta }$ is strong base.
3. Reaction will take place because $O{H}^{-}$is poor leaving group and ​ $X^{\theta }$ is weak base whereas is
   strong base.
4. Reaction will take place because $O{H}^{-}$ is good leaving group, ​ $X^{\theta }$ is weak base and is strong base.

Q. Which of the following reaction is example of $S_{N}2$ reaction using $conc.HCl:$
$\left(a\right)C{H}_3-C{H}_2-OH\stackrel{AnhyZnC{l}_2/△}{\to }C{H}_3-C{H}_2-Cl$

$\left(b\right)C{H}_3-\underset{C{H}_3}{\underset{|}{\stackrel{C{H}_3}{\stackrel{|}{C}}}}-C{H}_{2}OH\stackrel{AnhyZnC{l}_2/△}{\to }C{H}_3-\underset{C{H}_3}{\underset{|}{\stackrel{C{H}_1}{\stackrel{|}{C}}}}-C{H}_2-C{H}_3$

$\left(c\right)C{H}_3-\underset{C{H}_3}{\underset{|}{\stackrel{OH}{\stackrel{|}{C}}}}-C{H}_3\stackrel{AnhyZnC{l}_2/△}{\to }C{H}_3-\underset{C{H}_3}{\underset{|}{\stackrel{Cl}{\stackrel{|}{C}}}}-C{H}_3$

$\left(d\right)C{H}_2=CH-C{H}_2-OH\stackrel{AnhyZnC{l}_2/△}{\to }C{H}_2=CH-C{H}_2-Cl$

1. a
2. b
3. c
4. d

Q. From the given alkyl halides, choose the correct order of rate of reactivity toward $S_{N}1$ reaction.

1. (I) > (II) > (III)
2. (III) > (I) > (II)
3. (III) > (II) > (I)
4. (II) > (I) > (III)

Q.

Methyl alcohol can be distinguished from ethyl alcohol using [KCET 1984; BHU 2000]

1. Fehling solution

2. Schiff's reagent

3. Sodium hydroxide and iodine

4. Phthalein fusion test

Q. When ethylene glycol is heated with oxalic acid in the presence of conc. $H_{2}S{O}_4$, the product formed is:

1. 
2. 
3. 
4. 

Q. The alcohol that produces turbidity immediately with Lucas reagent at room temperature

1. $1-butanol$
2. $2-butanol$
3. $2-methylpropan-2-ol$
4. $2-methylpropan-1-ol$

Q. For the given reaction $R-OH\stackrel{(C{H}_{3}CO{)}_{2}O/Py}{\to }R-O-{\stackrel{||}{C}}^O-C{H}_3$ Which alcohol will be most reactive:

1. $C{H}_{3}OH$
2. Second alcohol
3. Primary alcohol
4. All of these

Q. Which of the following reaction is example of $S_{N}2$ reaction using $conc.HCl:$
$\left(a\right)C{H}_3-C{H}_2-OH\stackrel{AnhyZnC{l}_2/△}{\to }C{H}_3-C{H}_2-Cl$

$\left(b\right)C{H}_3-\underset{C{H}_3}{\underset{|}{\stackrel{C{H}_3}{\stackrel{|}{C}}}}-C{H}_{2}OH\stackrel{AnhyZnC{l}_2/△}{\to }C{H}_3-\underset{C{H}_3}{\underset{|}{\stackrel{C{H}_1}{\stackrel{|}{C}}}}-C{H}_2-C{H}_3$

$\left(c\right)C{H}_3-\underset{C{H}_3}{\underset{|}{\stackrel{OH}{\stackrel{|}{C}}}}-C{H}_3\stackrel{AnhyZnC{l}_2/△}{\to }C{H}_3-\underset{C{H}_3}{\underset{|}{\stackrel{Cl}{\stackrel{|}{C}}}}-C{H}_3$

$\left(d\right)C{H}_2=CH-C{H}_2-OH\stackrel{AnhyZnC{l}_2/△}{\to }C{H}_2=CH-C{H}_2-Cl$

1. a
2. b
3. c
4. d

Q. Which of the following statements are correct for the given reaction:
$R-OH\stackrel{X^{\theta }}{\to }R-X+\stackrel{\theta }{O}H$

1. Reaction will not take place because is poor leaving group; $X^{\theta }$ is weak base.
2. Reaction will not take place because $O{H}^{-}$is poor leaving group and
   $X^{\theta }$ is strong base.
3. Reaction will take place because $O{H}^{-}$is poor leaving group and ​ $X^{\theta }$ is weak base whereas is
   strong base.
4. Reaction will take place because $O{H}^{-}$ is good leaving group, ​ $X^{\theta }$ is weak base and is strong base.

Q. There are four alcohols P, Q, R, and S that have 3, 2, 1, and 0 $\alpha -$ hydrogen atoms respectively. Which one would not give any colour in Victor Meyer's test?

1. P
2. Q
3. R
4. S

Q.

$C{H}_{3}C{H}_{2}OH+HCl\stackrel{ZnC{l}_2}{\to }C{H}_{3}C{H}_{2}Cl+H_{2}O$ In the above reaction, the leaving group is ?

1. $O{H}^{-}$

2. $H_{2}O$

3. $HO-Z\stackrel{\ominus }{n}C{l}_2$

4. $H_3{O}^{+}$

Q. The alcohol that produces turbidity immediately with Lucas reagent at room temperature

1. $1-butanol$
2. $2-butanol$
3. $2-methylpropan-2-ol$
4. $2-methylpropan-1-ol$

Q. When glycerol is treated with excess $HI$, it produces:

1. 2-iodopropane
2. allyl iodide
3. propene
4. glycerol triiodide

Q.

Which of the following reagents could be used to distinguish between propan-2-ol and tert-butyl alcohol?

1. Lucas reagent

2. $ZnC{l}_{2}andHCl$

3. A Cr(VI) reagent like $H_{2}Cr{O}_4$

4. Bromine water

Q.

Oxalic acid is formed when glycol is treated with:

1. Conc. sulphuric acid

2. Orthophosphoric acid

3. Dry hydrogen chloride gas

4. Dil. Nitric acid

Q. When ethylene glycol is heated with oxalic acid in the presence of conc. $H_{2}S{O}_4$, the product formed is:

1. 
2. 
3. 
4. 

Q.

Select the correct options in view of the following reaction:

1. $ZnC{l}_2$ acts as Lewis acid

2. The reaction proceeds via $S_{N}2$

3. The products are racemic

4. The products are optically active

Q. The compound A, B and C in the following reaction sequence are (in the order A, B, C):
$C{H}_3-C{H}_2-OH\stackrel{PB{r}_3}{\to }\left(A\right)\stackrel{alc.KOH}{\to }\left(B\right)\stackrel{B{r}_2/CC{l}_4}{\to }\left(C\right)$

1. $C_2{H}_{5}Br,C{H}_3-C{H}_2-OH,C{H}_{3}CHB{r}_2$
2. $C_2{H}_{5}Br,CH\equiv CH,C{H}_2=CHBr$
3. $C_2{H}_{5}Br,C{H}_2=C{H}_2,Br-C{H}_2-C{H}_2-Br$
4. $C_2{H}_{5}Br,C{H}_{3}C{H}_{2}OH,BrC{H}_2-C{H}_{2}Br$

Q. Which of the following compound shows instant turbidity with $HCl+ZnC{l}_2$?

1. Isopropyl alcohol
2. Ethyl alcohol
3. Benzyl alcohol
4. Neopentyl alcohol

Q. The structure of the product formed in the reaction given below is:

1. 
2. 
3. 
4. 

Q.

Distinction between primary, secondary and tertiary alcohol is done by [MP PMT/PET 1988; RPMT 2000]

1. Oxidation method

2. Lucas test

3. Victor Meyer method

4. All of these

Q. An unknown compound A having $MF{C}_6{H}_{12}{O}_6$ on acetylation gives acetylated product whose MW is $390$ The number of hydroxyl groups in A is:

1. Four
2. Five
3. Six
4. Three