Aldehydes Ketones and Carboxylic Acids Test

Result

Aldehydes Ketones and Carboxylic Acids Test - 67

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Weekly Quiz Competition

Question 1
1 / -0

Arrange the following in increasing order of their $$pK_a$$ values.

A
$$y\lt x\lt z$$

B
$$x\lt y\lt z$$

C
$$y\lt z\lt x$$

D
$$x\lt z\lt y$$
Question 2
1 / -0

Which of the following statement is not true?

A
Aldehyde and ketone give nucleophilic addition reactions.

B
Aldehyde and ketone give electrophilic addition reactions.

C
Aldehyde and ketones possess a polar carbonyl group.

D
Aldehydes and ketones having lower molar mass are soluble in water due to H-bond.
Question 3
1 / -0

Acetaldehyde reacts with $$PCl_{5}$$ to give:

A
ethyl chloride

B
ethylene chloride

C
ethylidene dichloride

D
trichloroacetaldehyde

Solution
Question 4
1 / -0

Which of the following compound does not react with sodium bisulphite?

A
Benzaldehyde

B
Acetophenone

C
Acetone

D
Acetaldehyde

Solution
Question 5
1 / -0

IUPAC name of $$\ { CH }_{ 3 }CH_{ 2 }CH_{ 2 }COCH_{ 3 }$$ is

A
2-pentanone

B
Pentan-2-one

C
Pentanone-2

D
all the above
Question 6
1 / -0

Which of the following is correct for $$K_{a}$$ values. ( Acidic strength )

A
$$CH_{3}CO_{2}H > CH_{3}CH_{2}OH$$

B
$$H_{2}O > C_{2}H_{5}OH > NH_{3} > HC \equiv CH > CH_{2}\equiv CH_{2} > CH_{3}- CH_{3}$$

C
$$HCOOH > CH_{3}-COOH > PhCOOH$$

D
None of these

Solution
Question 7
1 / -0

Which is the best method for carrying out the following reaction ?

A
$$^+COOH;HN{ O }_{ 3 }/{ H }_{ 2 }{ SO }_{ 4 }$$

B
$${ CH }_{ 3 }Cl/Al{ Cl }_{ 3 };HN{ O }_{ 3 }/{ H }_{ 2 }{ SO }_{ 4 };KMn{ O }_{ 4 }/{ H }^{ + },heat$$

C
$${ CH }_{ 3 }Cl/Al{ Cl }_{ 3 };KMn{ O }_{ 4 }/{ H }^{ + },heat;HN{ O }_{ 3 }/{ H }_{ 2 }{ SO }_{ 4 }$$

D
$${ HNO }_{ 3 }/{ H }_{ 2 }{ SO }_{ 4 };CH_{ 3 }Cl/AlCl_{ 3 };KMnO_{ 4 }/{ H }^{ + },heat$$
Question 8
1 / -0

Reaction of aldehydes and ketones with which reagent gives oxime?

A
$${ NH }_{ 2 }-{ NH }_{ 2 }$$

B
$${ NH }_{ 3}$$

C
$${ C }_{ 6 }{ H }_{ 5 }-NH-{ NH }_{ 2 }$$

D
$${ NH }_{ 2 }OH$$

Solution
Question 9
1 / -0

$$CH_{ 3 }-CH_{ 2 }-CHO\xrightarrow [ 2)\left( CH_ 3CO \right) _{ 2 }O,\ 3)H_{ 3 }O^{ + } ]{ 1)NH_{ 2 }OH/\Delta } 'X'$$ Then 'X' is

A
$$CH_3COOH$$

B
$$CH_3-CH_2-COOH$$

C
$$CH_3CONH_2$$

D
$$CH_3CH_2CHO$$

Solution
Question 10
1 / -0

Identify the combination of compounds that undergo Aldol condensation followed by dehydration to produce but-2-enal:

A

methanal and ethanal

B
two moles of ethanal

C
methanal and propanone

D
ethanal and propanone