1
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following is incorrect?

A
Primary alcohols are very easily oxidised to aldehydes, which are oxidised to acids with same number of C-atoms.
B
Secondary alcohols are very easily oxidised to ketones, which are oxidised to acids with same number of C-atoms.
C
Secondary alcohols are easily oxidised to ketones, which are oxidised to acids with lesser number of $$\mathrm{C}$$-atoms.
D
Secondary and tertiary alcohols on oxidation form acids with lesser number of C-atoms.
2
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which one of the following compounds would not undergo Aldol condensation?

A
Phenyl ethanal
B
1- Phenyl propanone.
C
2,2-Dimethyl butanal
D
2- Methyl pentanal
3
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

From among the following, identify the compound which forms two moles of a ketone on ozonolysis.

[A] 2,3-Dimethylbutane.

[B] 3-Methyl-1-pentene.

[C] 2,3-Dimethyl-2-butene.

[D] 2-Methyl-2-pentane.

A
[A]
B
[D]
C
[C]
D
[B]
4
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the final product formed during the course of the given reactions.

Pentan-2-one $$\xrightarrow{\mathrm{NaCN} / \mathrm{HCl}}[\mathrm{X}]$$

$$[\mathrm{X}] \xrightarrow[95 \% \mathrm{H}_3 \mathrm{PO}_4]{\Delta \text { with }}[Y]$$

A
COMEDK 2023 Evening Shift Chemistry - Aldehyde and Ketone Question 9 English Option 1
B
COMEDK 2023 Evening Shift Chemistry - Aldehyde and Ketone Question 9 English Option 2
C
COMEDK 2023 Evening Shift Chemistry - Aldehyde and Ketone Question 9 English Option 3
D
COMEDK 2023 Evening Shift Chemistry - Aldehyde and Ketone Question 9 English Option 4
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