Chapter 15 (7) Short Questions Chemistry Class 10 2024

Students if you are looking for the Chapter 15 (7) Short Questions Chemistry Class 10 Notes if yes? then you visit the right place where you can easily find the chapter 15 most important short questions only without answers but it is your responsibility to find answers from your 10th class Chemistry book.

Students You know that these Chapter 7 (15) Water Short Questions of Chemistry are helpful so don’t ignore to find answers from your Chemistry of Class 10

Class 10 Chemistry Chapter 15 Notes

Post TopicShort Questions
Book CodeChemistry
Class9th Class
Chapter/FullChapter 15
BoardPunjab Board

Class 10 Chemistry Chapter 15 Important Short Questions

  • Water is an excellent solvent, and has high specific heat capacity, high surface tension, and high capillary action.
  • Water is a universal solvent because of its polarity and hydrogen bonding ability.
  • Soft water produces a lather with soap.
  • Hard water does not produce lather with soap.
  • Hardness is of two types: temporary and permanent.
  • Temporary hardness is because of bicarbonates of calcium and magnesium. This hardness can be removed by boiling or by the addition of slaked lime (Ca(OH)2) in water.
  • Permanent hardness is because of the presence of carbonates and sulfates of calcium and magnesium. This hardness can be removed by treating water with washing soda and sodium zeolite.
  • Used water is called waste water or sewage.
  • Water pollution is caused by affecting water quality by pollutants.
  • Industrial effluents are one of the main causes of water pollution. It includes highly toxic organic chemicals, inorganic salts, heavy metals, mineral acids, oil and greases, etc.
  • Household water in the sewage from toilets, baths, kitchens, etc. consists of detergents used for cleaning purposes. Detergent being non-biodegradable causes rapid growth of aquatic plants. When these plants die and decay, they consume O2 present in the water. Thus, aquatic life is badly affected because of the scarcity of O2.
  • Agricultural effluents consist of fertilizers and pesticides. These substances provide nitrate and phosphate ions for the rapid growth of aquatic plants. When these plants die and decay, their decomposition process consumes O2 of water. Thus, depletion of O2 causes damage to the aquatic life.
  • Waterborne diseases are those diseases that spread because of drinking polluted water. These diseases spread because of a lack of proper sanitation arrangements. These diseases can be prevented by using safe water, properly disposing of sewage, and controlled use of toxic chemicals

Important Short Questions

  • How does water rise in plants?
  • Which forces are responsible for dissolving polar substances in water?
  • Why are non-polar compounds insoluble in water?
  • How does water dissolve sugar and alcohol?
  • How does limestone dissolve in water?
  • Differentiate between soft and hard water.
  • What are the causes of hardness in water?
  • What are the effects of temporary hardness in water?
  • Mention the disadvantages of detergents.
  • What is the difference between biodegradable and non-biodegradable substances?
  • How do detergents make the water unfit for aquatic life?
  • Why are pesticides used?
  • What are the reasons for waterborne diseases?
  • How waterborne diseases can be prevented?
Chemistry Questions
Chemistry Short Questions


The topic of this post is Class 10 Chemistry Chapter 15 (7) Short Questions Notes without any PDF file. We add this post to the 10th Chemistry Notes category where students can easily find the Short Questions type study solutions and much more that students need to be related to the Class 10 Chemistry Book.

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