Advertisements
Online Mock Tests
Chapters
2: Work and Energy
3: Current Electricity
4: Measurement of Matter
5: Acids, Bases and Salts
6: Classification of Plants
7: Energy Flow in an Ecosystem
8: Useful and Harmful Microbes
9: Environmental Management
10: Information Communication Technology (ICT)
11: Reflection of Light
12: Study of Sound
13: Carbon: An important element
▶ 14: Substances in Common Use
15: Life Processes in Living Organisms
16: Heredity and Variation
17: Introduction to Biotechnology
18: Observing Space: Telescopes
![Balbharati solutions for Science and Technology [English] 9 Standard Maharashtra State Board chapter 14 - Substances in Common Use - Shaalaa.com](/images/science-and-technology-english-9-standard-maharashtra-state-board_6:5c9e2db8f20741f3a9290526164f2c03.jpg "Balbharati solutions for Science and Technology [English] 9 Standard Maharashtra State Board chapter 14 - Substances in Common Use")
Advertisements
Solutions for Chapter 14: Substances in Common Use
Below listed, you can find solutions for Chapter 14 of Maharashtra State Board Balbharati for Science and Technology [English] 9 Standard Maharashtra State Board.
Balbharati solutions for Science and Technology [English] 9 Standard Maharashtra State Board 14 Substances in Common Use Exercise [Page 162]
Fill in the blanks.
The number of molecules of water of crystallization in washing soda is ______.
The chemical name of baking soda is ______.
______ is used in the treatment of hyperthyroidism.
The chemical name of Teflon is ______.
Match the pairs.
| Group A | Group B |
| 1. Saturated brine | a. sodium metal freed |
| 2. Fused salt | b. basic salt |
| 3. CaOCl2 | c. crystallization of salt |
|
4. NaHCO3 |
d. oxidation of colour |
Write answers to the following.
What is meant by radioactivity?
When is said to be the nucleus unstable?
Which diseases are caused by artificial food colours?
Where in the industrial field is radioactivity used?
Write down properties of teflon.
What type of colours will you use to celebrate ecofriendly Rang Panchami? Why?
Why has the use of methods like Teflon coating become more common?
Give a scientific explanation.
Bleaching powder has the odour of chlorine.
Give a scientific explanation.
The hard water of a well becomes soft on adding washing soda to it.
Give a scientific explanation.
Soap forms a precipitate in hard water.
Give a scientific explanation.
The particles of powder are given an electric charge while spraying them to form the powder coating.
Give a scientific explanation.
The aluminium article is used as an anode in the anodizing process.
Give a scientific explanation.
When the radiation coming out from a certain radioactive substance is passed through an electric field, marks are found at three places on the photographic plate placed in its path.
Give a scientific explanation.
A certain type of ceramic tile is fixed on the outer layer of a space shuttle.
Write answers to the following.
Write about artificial food colours, the substances used in them and their harmful effects.
What is meant by the water of crystallization? Give examples of salts with water of crystallization, and their uses.
Write briefly about the three methods of electrolysis of sodium chloride.
Write the use.
Anodizing
Write the use.
Powder coating
Write the uses of Radioactive substances.
Write the uses of Ceramic.
Write the harmful effects.
Artificial dye
Write the harmful effects.
Artificial food colour
Write the harmful effects.
Radioactive substances
Write the harmful effects.
Deodorant
Write the chemical formula.
Bleaching powder
Write the chemical formula.
common salt
Write the chemical formula.
Baking soda
Write the chemical formula.
Washing soda
Explain what you see in the following picture.
Solutions for 14: Substances in Common Use
Balbharati solutions for Science and Technology [English] 9 Standard Maharashtra State Board chapter 14 - Substances in Common Use
Shaalaa.com has the Maharashtra State Board Mathematics Science and Technology [English] 9 Standard Maharashtra State Board Maharashtra State Board solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. Balbharati solutions for Mathematics Science and Technology [English] 9 Standard Maharashtra State Board Maharashtra State Board 14 (Substances in Common Use) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. Balbharati textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.
Concepts covered in Science and Technology [English] 9 Standard Maharashtra State Board chapter 14 Substances in Common Use are Hazards of Radioactive Substances and Radiation, Important Salts in Daily Life, Preparation and Uses of Baking Soda, Preparation and Uses of Washing Soda, Soap, Preparation and Uses of Bleaching Powder, Properties and Uses of Sodium Chloride, Some Crystalline Salts, Characteristics of Alpha, Beta and Gamma Rays, Uses of Radioactive Isotopes, Food Colours and Essences, Dye, Artificial Colours, Deodorant, Teflon, Powder Coating, Anodizing, Ceramic, Radioactivity, Chemical Substances in Day to Day Life, Nature of Radioactive Radiation.
Using Balbharati Science and Technology [English] 9 Standard Maharashtra State Board solutions Substances in Common Use exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Balbharati Solutions are essential questions that can be asked in the final exam. Maximum Maharashtra State Board Science and Technology [English] 9 Standard Maharashtra State Board students prefer Balbharati Textbook Solutions to score more in exams.
Get the free view of Chapter 14, Substances in Common Use Science and Technology [English] 9 Standard Maharashtra State Board additional questions for Mathematics Science and Technology [English] 9 Standard Maharashtra State Board Maharashtra State Board, and you can use Shaalaa.com to keep it handy for your exam preparation.
