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

Which of the following hexoses will form the same osazone when treated with excess phenyl hydrazine?

A
D-glucose, D-fructose and D-galactose
B
D-glucose, D-fructose and D-mannose
C
D-glucose, D-mannose and D-galactose
D
D-fructose, D-mannose and D-galactose
2
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Pick out the incorrect statement(s) from the following.

1. Glucose exists in two different crystalline forms, $$\alpha$$-D-glucose and $$\beta$$-D-glucose.

2. $$\alpha$$-D-glucose and $$\beta$$-D-glucose are anomers.

3. $$\alpha$$-D-glucose and $$\beta$$-D-glucose are enantiomers.

4. Cellulose is a straight chain polysaccharide made of only $$\beta$$-D-glucose units.

5. Starch is a mixture of amylase and amylopectin, both contain unbranched chain of $$\alpha$$-D-glucose units.

A
1 and 2 only
B
2 and 3 only
C
3 and 4 only
D
3 and 5 only
3
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which one of the following is an important component of chlorophyll?

A
Mn
B
Mg
C
Fe
D
Zn
4
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

One among the 4 Vitamins belonging to $$\mathrm{B}$$ Complex, can be stored in our body. Identify the Vitamin.

A
Pyridoxine
B
Thiamine
C
Cyanocobalamin
D
Riboflavin
COMEDK Subjects