1. The bases give………. ions in water
(A) OH−
(B) H+
(C) H−
(D) H3O+
2. Which one is a Lewis acid?
(A) F−
(B) OH−
(C) BF3
(D) NH3
3. Which one is a Lewis base?
(A) H3O+
(B) NH3
(C) BF3
(D) AlCl3
4. The process in which base reacts with oil and form soap is called……?
(A) Halogenation
(B) Neutralization
(C) Saponification
(D) Oxidation
5. The basicity of CH3COOH is…..?
(A) 1
(B) 2
(C) 3
(D) 4
6. The acidity of sodium hydro oxide is…..
(A) 1
(B) 2
(C) 3
(D) 4
7. Which one is alkali?
(A) KOH
(B) Cu(OH)2
(C) Al(OH)3
(D) Ba(OH)2
8. Alum is an example of….
(A) Double
(B) Complex
(C) Acidic
(D) Basic
9. The pH of pure water is….
(A) 4
(B) 0
(C) 7
(D) 14
10. The solution having pH six is called…
(A) strong acid
(B) Weak acid
(C) strong base
(D) weak base
11. pH is equal to…..
(A) +log[OH−]
(B) log[OH−]
(C) +log[H+]
(D) log [H+]
12. The number of ionizable hydrogen atoms present in a acid molecule is called it’s……
(A) Allotropy
(B) Basicity
(C) Acidity
(D) Radioactivity
13. According to Lewis concept, an acid…….
(A) Accept pair of electron
(B) Donate pair of electron
(C) Accept pair of proton
(D) Donate pair of proton
14. KH2PO4 is ……salt.
(A) Acidic
(B) Basic
(C) Neutral
(D) Double
15. The pH range of a basic solution is
(A) 1 to 4
(B) 8 to 14
(C) 0 to 7
(D) 5 to 6
16. How many water molecules are in the crystal of copper sulphate molecule (CuSO4).
(A) 5
(B) 12
(C) 6
(D) 7
17. The nature of solution having pH more than seven will be …………
(A) Neutral
(B) Basic
(C) Acidic
(D) Amphoteric
18. Which one is a double salt?
(A) K2SO4·Al2(SO4)3
(B) Na2CO3·10H2O
(C) Na2SO4
(D) CuSO4·5H2O
19. What will be the effect of mixing more water in acidic solution……
(A) pH will increase
(B) pH will decrease
(C) pH will remain constant
(D) pH will become 14
20. Which one has slippery touch?
(A) Acid
(B) Salt
(C) Base
(D) Double salt