1
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 18 English Option 1
B
COMEDK 2023 Evening Shift Chemistry - Aldehyde and Ketone Question 18 English Option 2
C
COMEDK 2023 Evening Shift Chemistry - Aldehyde and Ketone Question 18 English Option 3
D
COMEDK 2023 Evening Shift Chemistry - Aldehyde and Ketone Question 18 English Option 4
2
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which one of the following will give a positive result when it is warmed with Chloroform and alcoholic solution of $$\mathrm{KOH}$$ ?

A
$$\mathrm{N}$$ - Methyl-o-Methylaniline
B
N,N-Dimethylaniline.
C
p-Methylbenzylamine
D
N-Methyl-p-Methylaniline
3
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Choose the incorrect statement:

A
Higher the $$\mathrm{K}_{\mathrm{H}}$$ value for a gas at a given pressure, higher is its solubility in that solvent.
B
$$\mathrm{K}_{\mathrm{H}}$$ value for a gas present in a given solvent depends on the nature of solute and solvent.
C
$$\mathrm{K}_{\mathrm{H}}$$ value is temperature dependent.
D
$$\mathrm{K}_{\mathrm{H}}$$ value changes with change in the partial pressure of the gas.
4
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

What would be the products obtained when a mixture of p-Methoxy benzaldehyde and Methanal are heated with $$50 \%$$ concentrated Caustic soda solution?

A
p- Methoxy sodium benzoate and sodium acetate.
B
p-Methoxy benzyl alcohol and sodium formate.
C
p- Methoxy benzyl alcohol and methanol.
D
p- Methoxy sodium benzoate and sodium formate
EXAM MAP