Chemistry MCQs for BSC class

By: Prof. Dr. Fazal Rehman | Last updated: May 23, 2025

1. : Phosphoric acid has a formula of?
(A) H₃PO₄
(B) H₃PO₂
(C) PPA₄
(D) H₃PO₃

2. : Which of the following is a code that stores information which is used to produce proteins?
(A) Structure of the base pairs
(B) Number of the base pairs
(C) Order of the base pairs
(D) None of these

3. : Due to mobile valence electrons,
(A) metals are rich insulators
(B) metals are poor electrolytes
(C) metals are poor insulators
(D) metals are not rigid

4. : Deficiency of vitamin D causes?
(A) Rickets and osteomalacia
(B) Night blindness
(C) Anemia and bleeding gums
(D) Sugar

5. : Chlorine’s (Cl) relative atomic mass is 35.5. This half number is due to?
(A) a half proton
(B) isotopes
(C) a half neutron
(D) a half electron

6. : Cellulose is obtained from?
(A) Plants
(B) Animals
(C) Microorganisms
(D) All of these

7. : The difficulty of discharge is highest in?
(A) copper ions
(B) lead ions
(C) calcium ions
(D) silver ions

8. : How much energy is provided by 1g of glucose?
(A) 18.8 KJ
(B) 24 KJ
(C) 9.2 KJ
(D) 15.6 KJ

9. : In polarization, positive side attracts the?
(A) the positive side of the water molecules
(B) negative side of water molecules
(C) substance dissolves completely in water
(D) metals of group VII

10. : How many types of vitamins are there?
(A) Three
(B) Four
(C) Two
(D) One