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 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Given are 4 statements related to the chemical properties of Glucose.

Identify the two incorrect statements from the following.

A. It reacts with $$\mathrm{Br}_2$$ (aq) to form Saccharic acid.

B. Reacts with Acetic anhydride to form Glucose tetraacetate.

C. Reacts with Hydroxylamine to give Glucose oxime.

D. It reacts with ammoniacal $$\mathrm{AgNO}_3$$ to form ammonium salt of Gluconic acid with deposition of silver.

A
A & B
B
C & D
C
B & D
D
A & C
2
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two statements, Assertion and Reason are given. Choose the correct option from the following.

Assertion: In the secondary structure of RNA, double helix structure is formed.

Reason: In the double structure of RNA, two nucleic acid chains are wound about each other and held together by hydrogen bonds between pairs of bases

A
Assertion is correct but Reason is incorrect.
B
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
C
Assertion is incorrect but Reason is correct.
D
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
3
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Match the Vitamins given in Column I with the diseases caused by their deficiency as given in Column II.

Vitamin Deficiency
(A) K (P) Cheilosis
(B) B$$_12$$ (Q) Osteomalacia
(C) B$$_2$$ (R) Permicious Anaemia
(D) D (S) Haemophilia

A
$$ A-S \quad B-R \quad C-P \quad D-Q $$
B
$$ A-Q \quad B-P \quad C-S \quad D-R $$
C
$$ \mathrm{A}-\mathrm{S} \quad \mathrm{B}-\mathrm{R} \quad \mathrm{C}-\mathrm{Q} \quad \mathrm{D}-\mathrm{P} $$
D
$$ \mathrm{A}-\mathrm{P} \quad \mathrm{B}-\mathrm{S} \quad \mathrm{C}-\mathrm{Q} \quad \mathrm{D}-\mathrm{R} $$
4
COMEDK 2024 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

With reference to vitamins and its deficiency diseases, the correct statements are:

(i) Cheilosis is due to the deficiency of Riboflavin

(ii) The deficiency of Vitamin B6 causes pernicious anaemia

(iii) Osteomalacia is due to the deficiency of Vitamin E

(iv) The deficiency of ascorbic acid causes scurvy

(v) The deficiency of Vitamin A causes xerophthalmia

A
$$ \text { (i), (iii) and (v) } $$
B
$$ \text { (i), (ii) and (iv) } $$
C
$$ \text { (i), (iv) and (v) } $$
D
$$ \text { (ii), (iii) and (v) } $$
COMEDK Subjects