1
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

Which of the following is a water-soluble vitamin?

A

Vitamin A

B

Vitamin K

C

Vitamin C

D

Vitamin D

2
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

In a first-order reaction, the initial concentration of $A$ is $0.5 \mathrm{~mol} \mathrm{~L}^{-1}$. After 20 minutes, the concentration reduces to $0.4 \mathrm{~mol} \mathrm{~L}^{-1}$. The rate constant is (in $\mathrm{min}^{-1}$ ).

A

0.0051

B

0.0112

C

0.025

D

0.051

3
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

An unknown ester is hydrolysed to give ethanol as one of the products. Which chemical test can be used to confirm the identity of this alcohol?

A

2,4-DNP test

B

Tollen's test

C

lodoform test

D

Schiff's test

4
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

Which of the following pairs form the same osazone?

A

Glucose and fructose

B

Glucose and galactose

C

Glucose and arabinose

D

Lactose and maftose

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