Chapters
Chapter 2: Health and Diseases
Chapter 3: Force and Pressure
Chapter 4: Current Electricity and Magnetism
Chapter 5: Inside the Atom
Chapter 6: Composition of Matter
Chapter 7: Metals and Nonmetals
Chapter 8: Pollution
Chapter 9: Disaster Management
Chapter 10: Cell and Cell Organelles
Chapter 11: Human Body and Organ System
Chapter 12: Introduction to Acid and Base
Chapter 13: Chemical Change and Chemical Bond
Chapter 14: Measurement and Effects of Heat
Chapter 15: Sound
Chapter 16: Reflection of Light
Chapter 17: Man made Materials
Chapter 18: Ecosystems
Chapter 19: Life Cycle of Stars
Chapter 12: Introduction to Acid and Base
Balbharati solutions for Maharashtra state board (SSC) Class 8 General Science Chapter 12 Introduction to Acid and Base Exercise [Page 88]
Identify the following solutions, whether they are acid or alkali.
| Solution | Change in Indicator | Acid/Alkali | ||
| Litmus | Phenolphthalein | Methyl orange | ||
| 1. | ... | No change | ... | |
| 2. | ... | ... | Orange colur turns red | |
| 3. | Red litmus turns blue | ... | ... | |
Write chemical names from given formulae.
H2SO4, Ca(OH)2, HCl, NaOH, KOH, NH4OH
Sulphuric acid has highest importance in chemical industry. Why?
Give answers
Which acid is used for getting chloride salt ?
Give answers
By squizzing lemon on a piece of rock the gas liberated turned lime water milky. which compound is present in the rock ?
Give answers
The label on the bottle of chemical is spoiled. How will you find whether the chemical is acidic or not ?
Answer the following question.
Explain the difference between acid and alkali.
Answer the following question.
Why indicator does not get affected by salt?
Answer the following question.
Which substances are produced by neutralization process?
Answer the following question.
Which are the industrial uses of adids ?
Fill in the blanks using appropriant words.
Main constituent of acid is ____________.
Fill in the blanks using appropriant words.
Main constituent of alkali is _____________.
Fill in the blanks using appropriant words.
Tartaric acid is a................ acid.
Match the pairs.
| Group A | Group B |
| 1. Tamarind | a. Acetic acid |
| 2. Curd | b. Citric acid |
| 3. Lemon | c. Tartaric acid |
| 4.Vinegar | d. Lactic acid |
State true of false
Oxides of metals are alkaline in nature.
True
False
State true of false
Salt is acidic.
True
False
State true of false.
Metal corrodes due to salts
True
False
State true of false.
Salts are neutral.
True
False
Classify following substances into acidicm basic and neutral group-
HCl, NaCl, MgO, KCl, H2SO4, HNO3, H2O, Na2CO3
Chapter 12: Introduction to Acid and Base
Balbharati solutions for Maharashtra state board (SSC) Class 8 General Science chapter 12 - Introduction to Acid and Base
Balbharati solutions for Maharashtra state board (SSC) Class 8 General Science chapter 12 (Introduction to Acid and Base) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Maharashtra State Board Maharashtra state board (SSC) Class 8 General Science solutions in a manner that help students grasp basic concepts better and faster.
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Concepts covered in Maharashtra state board (SSC) Class 8 General Science chapter 12 Introduction to Acid and Base are Concept of Acid, Natural Indicators Around Us, Properties of Acid, Uses of Acids, Concept of Base/Alkali, Neutalization.
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