Q32.In comparison to the zeolite process for the removal of permanent hardness, the synthetic resin method is (1) less efficient as it exchanges only anions. (2) more efficient as it can exchange both cations as well as anions. (3) less efficient as the resins cannot be regenerated. (4) more efficient as it can exchange only cations.
What This Question Tests
This question compares the efficacy of two water softening methods, requiring knowledge of the types of ions exchanged by the zeolite process versus the more comprehensive synthetic resin method.
Concepts Tested
📚 NCERT Sections This Tests
7.14 — Give Two Reactions That Show The Acidic Nature Of Phenol. Compare Acidity
Chemistry Class 12 · Chapter 7
7.14 Give two reactions that show the acidic nature of phenol. Compare acidity of phenol with that of ethanol.
7.8 — Ortho And Para Nitrophenols Are More Acidic Than Phenol. Draw The
Chemistry Class 12 · Chapter 7
7.8 Ortho and para nitrophenols are more acidic than phenol. Draw the resonance structures of the corresponding phenoxide ions.
8.17 — Complete Each Synthesis By Giving Missing Starting Material, Reagent Or Products
Chemistry Class 12 · Chapter 8
8.17 Complete each synthesis by giving missing starting material, reagent or products
📋 Question Details
- Chapter
- Hydrogen
- Topic
- Hardness of water
- Year
- 2020
- Shift
- 07 Jan Shift 1
- Q Number
- Q32
- Type
- MCQ
- NCERT Ref
- Class 11 Chemistry Ch 9: Hydrogen
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Q39.Permanent hardness in water cannot be cured by: (1) Treatment with washing soda (2) Ion exchange method (3) Calgon's method (4) Boiling