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MCQ's Test For ECAT Chemistry Chapter 23 Aldehydes and Ketones
Try The MCQ's Test For ECAT Chemistry Chapter 23 Aldehydes and Ketones
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Total Questions30
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Time Allowed30
ECAT Chemistry Chapter 23 Aldehydes and Ketones
00:00
Question # 1
Which compound on reaction with hydrogen cyanide produces a compound with a chiral centre
Question # 2
Which reaction is of condensation or addition elimination reaction?
Question # 3
A compound R has all of the following properties. It is neutral; It gives an orange precipitate with 2,4-dinitrophenythydrazine; it evolves hydrogen chloride when treated with PCI5in the cold What could R be
Question # 4
Reaction of Grignard's reagent with formaldehyde gives:
Question # 5
Which of the following reagent will react with both aldehyde and ketones?
Question # 6
Which compound would undergo nucleophilic addition
Question # 7
Acetone reacts with HCN to form a cyanohydrin. It is an example of
Question # 8
Cannizzaro's reaction in not given by
Question # 9
An organic compound has the following properties ; It gives a positive tri-iodomethane test; it gives a yellow ppt, with 2, 4-DNP regent; it does not react with Tollen's reagent . Which compound would give these results
Question # 10
Silver mirror test is applied for
Question # 11
The homologous series of aldehydes and ketones have general formula:
Question # 12
What is formed when propanone is refluxed with an anhydrous solution of NaBH4
Question # 13
Aldehydes give reactions :
Question # 14
In formadaldehyde and KOH are heated then we get
Question # 15
Which of the following react with NaOH to produce an acid and an alcohol?
Question # 16
Reduction with aluminium isopropoxide in excess of Isopropyl alcohol is called Meerwein Ponndroff-Verley reduction (MPV). What will be the final product when cyclohex-2-enone is selectively reduces in MPV reaction?
Question # 17
Which of the following gives iodoform on heating with a solution of I2containing Na2CO3?
Question # 18
Ethanal may be converted into a three-carbon acid in a two-step process.
Ethanal may be converted into a three-carbon acid in a two-step process.Which compound is the intermediate
Question # 19
Distillation of calcium salts of acetic acid and formic acids gives acetaldehyde. What compound would be obtained if only calcium salt of acetic acid is distilled
Question # 20
When vapours of isopropyl alcohol are passed over heated copper, the major product obtained is
Question # 21
Wolf-kishner reduction is used for the reduction of
Question # 22
The color of ppts formed by Fehling's test is
Question # 23
Which is mild oxidizing agent ?
Question # 24
A compound possessingα-hydrogen atom, in the presence of dilute alkali formsβ-hydroxy aldehyde. This product on heating with dilute acid forms an unsaturated crotonaldehyde. The compound is
Question # 25
C2H5CHO and (CH3)2CO can be distunguished by testing with
Question # 26
Which of the following compounds gives a ketone with Grignard's reagent?
Question # 27
Which of the following does not turn Schiff's reagent to pink?
Question # 28
Chromic acid used to oxidize
Question # 29
The colour of ppts formed by Fehling's test is
Question # 30
Which of the following will have the highest boiling point?
Top Scorers Of ECAT Chemistry Chapter 23 Aldehydes and Ketones MCQ`s Test
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M M Umer Arain 10 - Dec - 2024 00 Min 27 Sec 110/120 -
M Mian araf Araf 16 - May - 2024 02 Min 13 Sec 110/120 -
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M Mehreen Ather 23 - Dec - 2024 19 Min 27 Sec 65/120
ECAT Chemistry Chapter 23 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Aldehydes which do not haveα-hydrogen undergo |
A. Aldol combination
B. Cannizzaro's reaction
C. Substitution
D. Elimination
|
| 2 | Reduction with aluminium isopropoxide in excess of Isopropyl alcohol is called Meerwein Ponndroff-Verley reduction (MPV). What will be the final product when cyclohex-2-enone is selectively reduces in MPV reaction? |
A. Cyclohexanol
B. Cyclohex-2-enol
C. Cyclohexanone
D. Benzene
|
| 3 | Which of the following reagent will react with both aldehyde and ketones? |
A. Grinard's reagent
B. Tollen's reagent
C. Fehling's reagent
D. Benedict's reagent
|
| 4 | Which of the following gives iodoform on heating with a solution of I2containing Na2CO3? |
A. Ethyl alcohol
B. Acetone
C. Ethyl alcohol as well as acetone
D. Methyl alcohol
|
| 5 | A compound A has a molecular formula C2Cl3OH. It reduces Fehling solution and on oxidation produces a monocarboxylic acid B.A can also be obtained by the action of Cl2on Ethanol. A is |
A. Chloral hydrate
B. CHCl3
C. CH3Cl
D. Chloroacetic acid
|
| 6 | Self condensation of acetaldehyde in the presence of dilute alkalies gives |
A. An acetal
B. An aldol
C. Mesitylene
D. Propionaldehyde
|
| 7 | Which of the following is hypnotic? |
A. Acetaldehyde
B. Metaldehyde
C. Paraldehyde
D. None
|
| 8 | Give IUPAC name fo Acetone |
A. Ethanal
B. Propanone
C. Butanone
D. Propanal
|
| 9 | A nucleophilic reagent will readily Attack |
A. Ethylene
B. Ethanal
C. Ethanol
D. Ethylamine
|
| 10 | An organic compound has the following properties ; It gives a positive tri-iodomethane test; it gives a yellow ppt, with 2, 4-DNP regent; it does not react with Tollen's reagent . Which compound would give these results |
A. CH3CHO
B. CH3CH2OH
C. CH3CH2COCH3
D. CH3CH2CH2CHO
|
Test Questions
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