1
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
2
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following will show geometrical isomerism?

A
2-methylbut-2-ene
B
2-methylpropene
C
Cyclohexene
D
1,2-dibromopropene
3
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the compounds A, B, C and D.

$$ \text { 1,2,2,2-tetrachloroethane } \xrightarrow[\Delta]{\mathrm{Zn}}[\mathrm{A}] $$

[A] $$ \xrightarrow[675 \mathrm{~K}]{\text { Fe tube }} $$ [B] $$ \xrightarrow[\text { Conc. } \mathrm{H}_2 \mathrm{SO}_4]{\text { Conc. } \mathrm{HNO}_3} $$ [C] $$ \xrightarrow[\text { Anhydrous } \mathrm{AlCl}_3]{\mathrm{Cl} /}$$ [D]

A
COMEDK 2023 Evening Shift Chemistry - Haloalkanes and Haloarenes Question 7 English Option 1
B
COMEDK 2023 Evening Shift Chemistry - Haloalkanes and Haloarenes Question 7 English Option 2
C
COMEDK 2023 Evening Shift Chemistry - Haloalkanes and Haloarenes Question 7 English Option 3
D
COMEDK 2023 Evening Shift Chemistry - Haloalkanes and Haloarenes Question 7 English Option 4
4
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Match the Coordination compounds given in Column I with their characteristic features listed in Column II.

S.No. Coordination compounds S.No. Characteristic features
W $$
\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Cl}\right] \mathrm{Cl}_3
$$
P $$
\text { Oxidation state }=+3 \text { Configuration }=\mathrm{d}^5 \quad \mu=5.92 \mathrm{BM}
$$
X $$
\mathrm{K}_4\left[\mathrm{Mn}(\mathrm{CN})_6\right.
$$
Q $$
\text { Oxidation state }=+3 \text { Configuration }=\mathrm{d}^3 \quad \mu=3.87 \mathrm{BM}
$$
Y $$
\left[\mathrm{CrCl}_3(\mathrm{py})_3\right]
$$
R $$
\text { Oxidation state }=+3 \text { Configuration }=d^6 \quad \mu=0 \mathrm{BM}
$$
Z $$
\mathrm{Cs}\left[\mathrm{FeCl}_4\right]
$$
S $$
\text { Oxidation state }=+2 \text { Configuration }=\mathrm{d}^5 \quad \mu=1.732 \mathrm{BM}
$$

A
$$ \mathrm{W}=\mathrm{S} \quad \mathrm{X}=\mathrm{R} \quad \mathrm{Y}=\mathrm{Q} \quad \mathrm{Z}=\mathrm{P} $$
B
$$ \mathrm{W}=\mathrm{S} \quad \mathrm{X}=\mathrm{P} \quad \mathrm{Y}=\mathrm{Q} \quad \mathrm{Z}=\mathrm{R} $$
C
$$ \mathrm{W}=\mathrm{R} \quad \mathrm{X}=\mathrm{S} \quad \mathrm{Y}=\mathrm{P} \quad \mathrm{Z}=\mathrm{Q} $$
D
$$ \mathrm{W}=\mathrm{R} \quad \mathrm{X}=\mathrm{S} \quad \mathrm{Y}=\mathrm{Q} \quad \mathrm{Z}=\mathrm{P} $$
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