Chemistry
State which of the following methods is generally used for preparing the salts 1 to 5 given below:
A: Neutralisation — insoluble base and dil. acid
B: Neutralisation — alkali and dil. acid
C: Simple displacement — active metal and dil. acid
D: Direct combination
E: Precipitation [double decomposition]
- PbCO3
- Zn(NO3)2
- NaCl
- Cu(NO3)2
- FeS
Acids Bases Salts
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Answer
- E: Precipitation (Double decomposition)
- C: Simple displacement — active metal and dil. acid
- B: Neutralisation — alkali and dil. acid
- A: Neutralisation — insoluble base and dil. acid
- D: Direct combination
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![The diagram represents the preparation of sodium sulphate salt from dil. H2SO4 acid and sodium hydroxide. Name the apparatus A. Name the substance X placed in A and the substance Y placed in B. State the reason for conducting the titration using the apparatus A and B. State which solution is transferred to the evaporating dish and evaporated to point of crystallization for obtaining the salt. State why titration is not conducted for the preparation of copper [II] sulphate crystals by neutralization. Acids, Bases and Salts, Simplified Chemistry Dalal Solutions ICSE Class 10](https://cdn1.knowledgeboat.com/img/scd10/sodium-sulphate-preparation-simplified-chemistry-icse-class-10-252x178.png)
- Name the apparatus 'A'.
- Name the substance 'X' placed in 'A' and the substance 'Y' placed in B.
- State the reason for conducting the titration using the apparatus 'A' and 'B'.
- State which solution is transferred to the evaporating dish and evaporated to point of crystallization for obtaining the salt.
- State why titration is not conducted for the preparation of copper [II] sulphate crystals by neutralization.