Aldehydes Ketones and Carboxylic Acids Test

Result

Aldehydes Ketones and Carboxylic Acids Test - 73

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

$$CH_3 - \underset{O}{\underset{||}{C}} - OH \xrightarrow[]{NaH{\overset{14}{C}O_3}} (P \,gas) \xrightarrow[(2) H_3O^{\oplus}]{(1)PhCH_2MgBr} (Q)$$

$$CH_{ 3 }-\overset { O }{ \overset { || }{ \underset { O }{ \underset { || }{ S } } } } -OH\xrightarrow [ ]{ NaH{ \overset { 14 }{ C } O_{ 3 } } } (R\, gas)\xrightarrow [ (2)H_{ 3 }O^{ \oplus } ]{ (1)Ph{ \overset { 14 }{ C } }H_{ 2 }MgBr } (S)$$
Product (Q) and (S) in the aove reactions are respectively:

A
$$PhCH_2COOH, Ph - \overset{14}{C}H_2 - \overset{O}{\overset{||}{\underset{O}{\underset{||}{S}}}} - OH$$

B
$$PhCH_2\overset{14}{C}OOH, Ph \overset{14}{C}H_2COOH$$

C
$$PhCH_2\overset{14}{C}OOH, Ph\overset{14}{C}H_2 \overset{14}{C}OOH$$

D
$$PhCH_2COOH, Ph\overset{14}{C}H_2 \overset{14}{C}OOH$$

Solution

$$CH_3 - \underset{O}{\underset{||}{C}} - OH \xrightarrow[]{NaH\overset{14}{C}O_3} CH_3CO\overset{-}{O} \overset{+}{N}a + H_2O + \overset{14}{C}O_2$$

$$\overset{14}{C}O_2 \xrightarrow[(2) H_3O^{\oplus}]{(1) PhCH_2MgBr} \underset{(Q)}{PhCH_2\overset{14}{C}OOH}$$

$$CH_3 - \overset{O}{\overset{||}{\underset{O}{\underset{||}{S}}}} - OH \xrightarrow[]{NaH\overset{14}{C}O_3} CH_3SO_3Na + H_2O + \overset{14}{C}O_2$$

$$\overset{14}{C}O_2 \xrightarrow[(2) H_3O^{\oplus}]{(1) Ph\overset{14}{C}H_2MgBr} \underset{(S)} {Ph\overset{14}{C}H_2 \overset{14}{C}OOH.}$$

Option C.
Question 2
1 / -0

A
$$CH_3CH (OH)_2, CH_3CH(OH)COOh$$

B
$$CH_3CHO, CH_3CH(OH)COOh$$

C
$$CH_3CH_2COOH, CH_3CH_2OH$$

D
$$CH_3CH(OH)COOH, CH_3CH_2OH$$

Solution
Question 3
1 / -0

Directions For Questions

A carbonyl compound $$P$$, which gives positive iodoform test, undergoes reaction with $$MeMgBr$$ followed by dehydration to give an olefin $$Q$$. Ozonolysis of $$Q$$ leads to a dicarbonyl compound $$R$$, which undergoes intramolecular aldol reaction to give predominantly $$S$$.
$$P \underset {\underset {3. H_{2}SO_{4}, \triangle}{2.H^{+}, H_{2}O}}{\xrightarrow {1. MeMgBr}} Q \underset {2. Zn, H_{2}O}{\xrightarrow {1. O_{3}}} R \underset {2.\triangle}{\xrightarrow {1. OH^{-}}} S$$.

...view full instructions

The structure of the product $$S$$ is

A

B

C

D

Solution
Question 4
1 / -0

By the action of malonic acid in ethanolic ammonia on benzaldehyde in the presence of pyridine, it forms:

A
Benzoic acid

B
Phenyl acetic acid

C
Cinnamic acid

D
Phthalic acid

Solution

The reactants for this are benzaldehyde and malonic acid in the presence of a weak base, followed by acid-catalyzed decarboxylation. It can also be prepared by oxidation of cinnamaldehyde, condensation of benzal chloride and sodium acetate (followed by acid hydrolysis), and the Perkin reaction.
Question 5
1 / -0

In the following reaction sequence
What is X.

A

B

C

D

Solution
Question 6
1 / -0

Which carbonyl group is protonated most readily in acidic solution, but gives nucleophilic addition by $$NH_{2}NH-Ph$$ least readily?

A

B

C

D

Solution
Question 7
1 / -0

What is the correct $$IUPAC$$ name for

A
5-methyl-3-hexenoic acid

B
5-carboxy-2-methylpentene

C
4-isotropyl-3-butenoic acid

D
None of these

Solution
Question 8
1 / -0

A

B

C

D

Solution
Question 9
1 / -0

The $$IUPAC$$ name for $$\begin{matrix} { CH }_{ 3 }CH={ CH }{ CH }_{ 2 }{ CH }{ CH }_{ 2 }COOH \\ \quad \quad| \\ \quad \quad{ CH }_{ 2 } \end{matrix}$$ is

A
$$5-$$aminohex$$-2-$$ene carboxylic acid

B
$$5-$$amino$$-2-$$heptenoic acid

C
$$3-$$amino$$-5-$$heptenoic acid

D
$$\beta -$$amini$$-\delta -$$heptenoic acid

Solution

$$\begin{matrix} \overset { 7 }{ { CH }_{ 3 } } & - & \overset { 6 }{ CH } & = & \overset { 5 }{ CH } & - & \overset { 4 }{ { CH }_{ 2 } } & - & \overset { 3 }{ CH } & - & \overset { 2 }{ { CH }_{ 2 } } & - & \overset { 1 }{ COOH } \\ & & & & & & & & | & & & & \\ & & & & & & & & { NH }_{ 2 } & & & & \end{matrix}$$
$$3-$$amino$$-5-$$heptenoice acid
Question 10
1 / -0

What is the compound called if remaining two valencies of a carbonyl group are satisfied by two alkyl groups

A
Aldehyde

B
Ketone

C
Acid

D
Acid chloride

Solution

The compound formed is known as $$Ketone.$$ And according to question, the compound so formed has a structure, $$R_2C=O. $$ And this is the general structure of ketones.