List of top Chemistry Questions on Biomolecules

Identify the correctly matched pairs from the following set

Which structure of protein represents its constitution?

Identify the incorrect statement about colloidal solution.

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

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

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

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?

On hydrolysis, which of the following carbohydrates gives only β-glucose ?

Glycosidic linkage in maltose is present between

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.

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

In the given pentapeptide, find out an essential amino acid ($Y$) and the sequence present in the pentapeptide.
Choose the correct answer from the options given below:

Given below are two statements for the following reaction sequence:

The correct statements are:

Activation energy for enzyme catalysed hydrolysis of sucrose is lower than that of acid catalysed hydrolysis.
During denaturation, secondary and tertiary structures of a protein are destroyed but primary structure remains intact.
Nucleotides are joined together by glycosidic linkage between $ C_1 $ and $ C_4 $ carbons of the pentose sugar.
Quaternary structure of proteins represents overall folding of the polypeptide chain.

How will you confirm the presence of five –OH groups in a glucose molecule, which are attached to different carbon atoms?

Sucrose hydrolyses in acidic medium into glucose and fructose by first order rate law with $t_{1/2} = 3$ hour. The percentage of sucrose remaining after 6 hours is ______. (Nearest integer)
(Given : $\log 2 = 0.3010$ and $\log 3 = 0.4771$)

Given below are two statements :
Statement I : Maltose is a non-reducing sugar
Statement II : Lactose is a reducing sugar

Identify the code of amino acid and iodine derivative hormone in the given option.