Aldehydes Ketones and Carboxylic Acids Test

Result

Aldehydes Ketones and Carboxylic Acids Test - 69

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Weekly Quiz Competition

Question 1
1 / -0

$$CH_3CH_2COONH_4\xrightarrow [ { P }_{ 2 }{ O }_{ 5 } ]{ \triangle } X\xrightarrow { { H }^{ + }/{ H }_{ 2 }O } Y$$
Y and X respectively are:

A
$$CH_3CH_2COOH,CH_3CH_2CN$$

B
$$CH_3CH_2CN,CH_3CH_2COOH$$

C
$$CH_3CH_2CH_2COOH, CH_3CH_2CH_3$$

D
$$CH_3CH_3, CH_3CH_2COOH$$
Question 2
1 / -0

Arrange the given compounds in decreasing order of nucleophilic addition reaction:

A
II> V> I> IV> III

B
III> IV> I> V> II

C
II> I> V> III> IV

D
IV> III> V> I> II
Question 3
1 / -0

The incorrect IUPAC name is

A
$$\underset{2 - methyl -3-butanone}{CH_3 \underset{O}{\underset{||}{C}} - \underset{CH_3}{\underset{|}{C}}H - CH_3}$$

B
$$\underset{2, 3-dimethylpotane}{CH_3 \underset{CH_2}{\underset{||}{C}} - \underset{CH_2CH_3}{\underset{|}{C}}H - CH_3}$$

C
$$\underset{2 - pentyne}{CH_3C \equiv C - CH_2 CH_3}$$

D
$$\underset{2-bromo -3-chlore-butane}{CH_3\underset{Cl}{\underset{|}{C}}H - \underset{Br}{\underset{|}{C}}H - CH_3}$$

Solution
Question 4
1 / -0

Which of the following compounds will show the maximum enol content?

A
$$CH_3COCH_2COCH_3$$

B
$$CH_3COCH_3$$

C
$$CH_3COCH_2CONH_2$$

D
$$CH_3COCH_2COOC_2H_5$$

Solution

Solution:- (A) $$CH_3COCH_2COCH_3$$
Due to intramolecular H-bonding and resonance stabilisation enol content is maximum.
Question 5
1 / -0

Which of the following is correct order regarding the acidity of carboxylic acids?

A
$$\left( \mathrm { CH } _ { 3 } \right) _ { 3 } \mathrm { CCOOH } > \left( \mathrm { CH } _ { 3 } \right) _ { 2 } \mathrm { CHCOOH } > \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { COOH }$$

B
$$\left( \mathrm { CH } _ { 3 } \right) _ { 3 } \mathrm { CCOOH } > \left( \mathrm { CH } _ { 3 } \right) _ { 2 } \mathrm { CHCOOH } < \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { COOH }$$

C
$$\left( \mathrm { CH } _ { 3 } \right) _ { 3 } \mathrm { CCOOH } < \left( \mathrm { CH } _ { 3 } \right) _ { 2 } \mathrm { CHCOOH } > \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { COOH }$$

D
$$\left( \mathrm { CH } _ { 3 } \right) _ { 3 } \mathrm { CCOOOH } < \left( \mathrm { CH } _ { 3 } \right) _ { 2 } \mathrm { CHCOOH } < \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { COOH }$$
Question 6
1 / -0

The major product of the given reaction is:

A

B

C

D

Solution
Question 7
1 / -0

$$P\xrightarrow {KMnO_{4}/KOH}Q\underset {\triangle}{\xrightarrow {Sodalime}} R \underset {anhy.\ AlCl_{3}}{\xrightarrow {CH_{3}Cl}} S$$

If $$P$$ and $$S$$ are toluene, $$Q$$ and $$R$$ ______ and ______ respectively.

A
Benzaldehyde, Benzoic acid

B
Benzaldehyde, Sodium benzoate

C
Benzoic acid, Benzene

D
Benzene, Benzoic acid

Solution

-Here P is Toluene.
When Toluene reacts with $$KMnO_4/KOH$$ it undergoes oxidation reaction to form Benzoic acid ($$Q$$) as a product.
This Benzoic acid when reacting with soda lime it forms back benzene ($$R$$) as a product.
This benzene on reaction with $$CH_3Cl$$ in the presence of Anhy. $$AlCl_3$$ Undergoes Friedel-Craft's alkylation reaction to form Toluene as a product.
Question 8
1 / -0

Propanoic acid occurs naturally as a result of the bacterial fermentation of milk and is partly responsible for the flavour of Swiss cheese.
Which starting materials can be used to produce propanoic acid?
1. $${CH}_{3}{CH}_{2}{CH}_{2}OH$$
2. $${CH}_{3}{CH}_{2}CHO$$
3. $${CH}_{3}{CH}_{2}CN$$

A
1, 2 and 3 are correct

B
1 and 2 only are correct

C
2 and 3 only are correct

D
1 only is correct

Solution
Question 9
1 / -0

$$C_7H_{16} \xrightarrow[\begin{matrix} 773K \\ 10\ atm\end{matrix} ]{\begin{matrix} Cr_2O_3\\Fe_2O_3\end{matrix}} A \xrightarrow{KMnO_4/H^{\oplus}}B$$

Then what is the incorrect statement?

A
$$B$$ will give effervescence with $$NaHCO_3$$

B
$$A$$ has degree of unsaturation equal to $$4$$

C
$$B$$ with slaked lime gives a symmetrical ketone.

D
None of these

Solution

Option D is correct.
Question 10
1 / -0

Which among the following compounds is used as selective weed killer?

A
Picric acid

B
$$2, 4$$-dichlorophenoxy acetic acid

C
$$2, 4, 6$$-trichlorophenoxy acetic acid

D
Salol

Solution

2,4-dichlorophenoxy acetic acid (usually called as $$2,4-D$$ ) is primarily used as a selective herbicide that selectively kills many terrestrial and aquatic broad leaf weeds, but not grasses.

It acts by mimicking the action of the plant growth hormone auxin, which results in uncontrolled growth and eventually death in susceptible plants.

Hence, option $$B$$ is correct.