List of top Chemistry Questions on Biomolecules

Fat soluble vitamins are : 
A. Vitamin B\( _1 \) 
B. Vitamin C 
C. Vitamin E 
D. Vitamin B\( _{12} \) 
E. Vitamin K 
Choose the correct answer from the options given below :

Which of the following is the correct structure of L-fructose?
Identify correct conversion during acidic hydrolysis from the following: (A) Starch gives galactose.
(B) Cane sugar gives equal amount of glucose and fructose.
(C) Milk sugar gives glucose and galactose.
(D) Amylopectin gives glucose and fructose.
(E) Amylose gives only glucose.
Choose the correct answer from the options given below:
The total number of hydrogen bonds of a DNA-double Helix strand whose one strand has the following sequence of bases is _______ . $5^{\prime}-\mathrm{G}-\mathrm{G}-\mathrm{C}-\mathrm{A}-\mathrm{A}-\mathrm{A}-\mathrm{T}-\mathrm{C}-\mathrm{G}-\mathrm{G}-\mathrm{C}-\mathrm{T}-\mathrm{A}-3^{\prime}$
Identify the pair of reactants that upon reaction, with elimination of HCl will give rise to the dipeptide Gly-Ala.
The hormone 'X' increases glucose levels in blood. Low levels of other hormone 'Y' causes lethargyness. What are X, Y respectively?
Consider the following statements
Statement-I: Oxides of sulphur and nitrogen are air pollutants
Statement-II: Photochemical smog is a reducing smog
The correct answer is
Source for vitamin C and vitamin E respectively are:
Increase in concentration of 'X' in blood of pregnant women who smoke may induce premature delivery. What is 'X'?
What is peptide bond? How is it formed? Write the name and formula of the reagent used to convert alkylhalide to nitroalkane.
On prolonged heating with HI, glucose gives a compound 'C', which can be obtained by Wurtz reaction using sodium metal and compound 'D'. Identify 'D'
The source of an enzyme is malt and that enzyme converts X into Y. X and Y respectively are
Write preparation of glucose from sucrose.
Differentiate between DNA and RNA.
What are nucleic acids?
What are carbohydrates? How are they classified?
What are macromolecules?
What are essential amino acids?
Alkali salt of palmitic acid is known as
Which of the following is a disaccharide?
The purine base present in RNA is
Water soluble vitamin is
The source of fats and oils is
Write the reaction of D-Glucose with the following:
(a) HCN (b) Br$_2$ water (c) (CH$_3$CO)$_2$O
Write two differences between DNA and RNA.