Physical Chemistry
Some Basic Concepts of Chemistry
MCQ (Single Correct Answer)
Chemical Equilibrium
MCQ (Single Correct Answer)
Inorganic Chemistry
Periodic Table and Periodicity
MCQ (Single Correct Answer)
Chemical Bonding and Molecular Structure
MCQ (Single Correct Answer)
Hydrogen and It's Compounds
MCQ (Single Correct Answer)
d and f Block Elements
MCQ (Single Correct Answer)
Coordination Compounds
MCQ (Single Correct Answer)
Environmental Chemistry
MCQ (Single Correct Answer)
Organic Chemistry
IUPAC Nomenclatures
MCQ (Single Correct Answer)
General Organic Chemistry
MCQ (Single Correct Answer)
Haloalkanes and Haloarenes
MCQ (Single Correct Answer)
Alcohol, Phenols and Ethers
MCQ (Single Correct Answer)
Aldehyde and Ketone
MCQ (Single Correct Answer)
Carboxylic Acids and Its Derivatives
MCQ (Single Correct Answer)
Compounds Containing Nitrogen
MCQ (Single Correct Answer)
Chemistry in Everyday Life
MCQ (Single Correct Answer)
Practical Organic Chemistry
MCQ (Single Correct Answer)
1
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the starting compound from the following data:

$$\mathrm{C}_6 \mathrm{H}_{14} \mathrm{O}(\mathrm{X})$$ on reaction with $$\mathrm{HI}$$ yields a haloalkane (A) and an alcohol (B). Compound (A) on reaction with aqueous $$\mathrm{NaOH}$$ gives an alcohol (C). Compounds (B) and (C) on reaction with $$\mathrm{CrO}_3$$ in anhydrous medium yields Butanone and Ethanal respectively.

A
2-Methoxypentane
B
2-Ethoxybutane
C
Hexan-1-ol
D
Hexan-2-ol
2
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.
3
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
$$ \mathrm{CCl}_3 \mathrm{CH}_2 \mathrm{OH}<\mathrm{CF}_3 \mathrm{CH}_2 \mathrm{OH}<\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH} $$
4
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$$_2$$
COMEDK Subjects