1. Acid and base react with each other and make:
(A) Water
(B) Salt
(C) Oxides
(D) Alloy
2. When base reacts with acid it gives:
(A) Water and salt
(B) Hydrogen and salt
(C) Water
(D) Salt
3. Mixed salts consist of:
(A) Positive & negative radicals
(B) Negative radicals
(C) Positive radicals
(D) None of these
4. Reaction between acid and base is called:
(A) Displacement
(B) Titration
(C) Neutralization
(D) Hydrolysis
5. Neutralization reaction is a ______ reaction:
(A) Endothermic
(B) Exothermic
(C) Isothermal
(D) None of these
6. Formula of sodium hydroxide is:
(A) NH₄OH
(B) NaOH
(C) KOH
(D) Ca(OH)₂
7. After neutralization reaction the salt is obtained which is separated by:
(A) Crystallization
(B) Filtration
(C) Evaporation
(D) Sublimation
8. When acid reacts with metals it releases:
(A) Chlorine
(B) Hydrogen sulphide
(C) Hydrogen
(D) Sulphur hydro-oxide
9. ______ are called negative radicals:
(A) Basic radical
(B) None of these
(C) Neutral radical
(D) Acidic radical
10. ______ are called positive radicals:
(A) Basic radical
(B) Acidic radical
(C) Neutral radical
(D) None of these
11. Salts are used for:
(A) All of these
(B) Food preservative
(C) Bleaching agents
(D) Photography
12. Reaction in which salt reacts with water and converts into acid and base is called:
(A) Titration
(B) Neutralization
(C) Hydrolysis
(D) Decomposition
13. The process of making crystals is called:
(A) Filtration
(B) Extraction
(C) Crystallization
(D) Distillation
14. The salts containing hydrogen ions are called:
(A) Normal salt
(B) Basic salt
(C) Mixed salt
(D) Acidic salt
15. Formula of baking soda is:
(A) NaCl
(B) NaHCO₃
(C) Na₂CO₃
(D) CH₃COONa
16. It’s an example of acidic salt:
(A) NaCl
(B) ZnCl₂
(C) NaHCO₃
(D) CaOCl₂
17. Formula of bleaching powder is:
(A) Na(OCl)Cl
(B) Zn(OH)Cl
(C) NaHPO₄
(D) Ca(OCl)Cl
18. Salts having more than one basic or acidic radicals are called:
(A) Acid salt
(B) Double salt
(C) Mixed salt
(D) Complex salt
19. Salts are ______ in water:
(A) Insoluble
(B) Flammable
(C) Inflammable
(D) Soluble
20. A common ion present in NaAg(CN)₂ is:
(A) CN⁻
(B) Na⁺
(C) Ag⁺
(D) Ag(CN)₂