List of top Chemistry Questions on Biomolecules

Among \(Fe^{3+}, Pb^{2+}, Cu^{2+}\) and \(Mn^{2+}\), identify the one that gets precipitated out while passing \(H_2S\) in presence of \(NH_4OH\) as group reagent. The highest possible oxidation state of the corresponding metal is:

Match the LIST-I with LIST-II

Given below are two statements: Statement I: Sucrose consists of \(\alpha\)-D-glucose and \(\beta\)-D-fructose units. Statement II: Lactose consists of \(\beta\)-D-galactose and \(\beta\)-D-glucose units.

The major product obtained when Phenol is treated with $\mathrm{CHCl_3}$ and aqueous $\mathrm{NaOH}$ at $340\,K$, followed by acidification is:}

Which structure of protein represents its constitution?

Identify the incorrect statement about colloidal solution.

A sample of water has no fluoride (F) ions in it. What is the maximum limit (in $mg~L^{-1}$) of soluble fluoride salt to be added to this water to convert it into safe drinking water?

At \(T\)(K), adsorption of gas \((A)\) on solid adsorbent \((B)\) follows Freundlich adsorption isotherm. On \(10\) g of \(B\), adsorption of gas \((A)\) gave the isotherm shown below. What is \(x\) (the quantity of \(A\) adsorbed in one gram of \(B\)) when the pressure of \(A\) is \(1.259\) atm?

\[ (\log 1.259=0.1,\qquad \text{Antilog}(0.1)=1.259) \]

Which of the following processes is not related to the purification or refining of metals?

Glycosidic linkage in maltose is present between

The vitamin (X) from B group can be stored in the body. The disease caused by the deficiency of X is:

Identify the correctly matched pairs from the following set

The correct answer is

Which from following contains mainly saturated fats ?

Match List-I with List-II

List-I (Name of the Compounds)	List-II (Chemical Structures)
(A) Gluconic acid	(I)
(B) Fructose	(II)
(C) Tryptophan	(III)
(D) Saccharic acid	(IV)

Choose the correct answer from the options given below:

Write any two fat soluble vitamins.

Explain the ring structure of glucose. What happens when D-glucose reacts with the following reagents? (i) Bromine water (ii) Hydroxylamine.

Explain the structure of Nucleic Acid.

(i) Write a short note on the cyclic structure of glucose.
(ii) What is the difference between a nucleoside and a nucleotide? (2+2=4)

Differentiate between fibrous and globular proteins.

The chemical name of vitamin \( B_1 \) is

Explain the following in relation to proteins:
(i) Peptide bond
(ii) Denaturation

Write a short note on the structure of nucleic acid. (2)

α-D(+)glucose and β-D(+)glucose are

What are nucleic acids? Explain the difference between DNA and RNA and state their two important biological functions.
OR
How can vitamins be classified? Write the name of a fat soluble vitamin. Which vitamin is responsible for blood clotting?