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

Choose the incorrect statement.

A
$$\mathrm{m}$$ - Cresol is a weaker acid than Phenol.
B
Acidic nature of Phenol is due to -I effect of oxygen of the hydroxyl group.
C
Acetylation of Salicylic acid produces 2-Acetoxybenzoic acid.
D
Phenol on heating with Conc. $$\mathrm{H}_2 \mathrm{SO}_4$$ yields sulphanilic acid.
2
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Choose the correct order of increasing acidic strength of the following compounds.

A
$$ \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH}<\mathrm{CCl}_3 \mathrm{CH}_2 \mathrm{OH}<\mathrm{CF}_3 \mathrm{CH}_2 \mathrm{OH} $$
B
$$ \mathrm{CF}_3 \mathrm{CH}_2 \mathrm{OH}<\mathrm{CCl}_3 \mathrm{CH}_2 \mathrm{OH}<\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH} $$
C
$$ \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH}<\mathrm{CF}_3 \mathrm{CH}_2 \mathrm{OH}<\mathrm{CCl}_3 \mathrm{CH}_2 \mathrm{OH} $$
D
$$ \mathrm{CCl}_3 \mathrm{CH}_2 \mathrm{OH}<\mathrm{CF}_3 \mathrm{CH}_2 \mathrm{OH}<\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH} $$
3
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

The chemical formula of Lucas reagent is

A
Anhy. ZnCl$$_2$$/HCl
B
C$$_6$$H$$_5$$SO$$_2$$Cl
C
NaOH + CaO
D
HNO$$_2$$
4
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

Which of the following is a false statement?

A
Methoxymethane has higher boiling point than ethanol.
B
Alcohols are more soluble is water than hydrocarbons of comparable molecular mass.
C
ortho-and para-nitrophenols are more acidic than phenols.
D
Phenol is more acidic than alcohol.
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