NCERT Solutions for Class 7 Science Chapter 5 : Acids, Bases and Salts

Content Curator

NCERT Solutions for Class 7 Science Chapter 5 Acids, Bases, and Salts are provided in this article. Important topics that are included in this chapter are:

Acids and Bases
Natural Indicators around Us
Neutralization
Neutralization in Everyday Life

Download PDF: NCERT Solutions for Class 7 Science Chapter 5 Acids, Bases, and Salts

NCERT Solutions for Class 7 Science Chapter 5

NCERT Solutions for Class 7 Science Chapter 5 Acids, Bases, and Salts are provided in the PDF:

NCERT Solution

Class 7 Science Chapter 5 Acids, Bases, and Salts: Important Topics

Acids have a sour taste, turn blue litmus red when mixed with water, and dissolve in water to release hydrogen ions.On the other hand bases have a bitter taste, and a soapy feel, turn red litmus blue, and produce hydroxide ions (OH–) in water.Salts are ionic substances that are formed when an acid and a base react to neutralize each other

Natural Indicators around Us

Natural indicators can be defined as a type of indicator that can be found naturally and that can determine whether the substance is an acidic substance or a basic substance. Some of the natural indicators around us are, an acid (e.g. vinegar, lemon juice), purple in an alkali (e.g. bicarbonate of soda, bleach), and green is something that is neutral (e.g. water). Many plants contain their own indicators – turmeric, red cabbage juice, and beetroot juice are three good examples. Other examples are tea and red grape juice.

Neutralization

Neutralization is a chemical reaction in which acid and a base react with each other, neutralize or nullify each other’s effect, and produce salt and water. In a reaction in water, neutralization results in there being no excess of hydrogen or hydroxide ions present in the solution.

Neutralization in Everyday Life

In everyday life, neutralization is employed in different applications. For example, it is used in the neutralization of stomach acidity, neutralizing the soil, the prevention of tooth decay, the treatment of ant bites, etc.

Chapter Related Links:

Acids Bases and Salt Important Question

Acids Bases and Salt Revision Notes

Difference Between Alkali and Base

Dilution Formula

Natural indicators

Calculate the ph of weak acid

List of strong acids

Salt

Acid strength

Check out: PYQs on Acids and Bases

pH of HCl Solution mixed with another HCl Solution	Tendency of BF₃,BCI₃and BBr₃ behave as Lewis acid decreases	50 ML Of 002 M NaOH Solution Is Mixed 50 ML Of 006
Species that can act as Bronsted Acids and Bases	Acetic Acid Dissociation	Finding pOH value of a solution with hydroxide ion concentration
	Compound whose Solution has Highest pH	Conjugate Base of NH₃

Class 7 Science Additional Resources:

CBSE Class 7 Science NCERT Textbook	NCERT Solutions	CBSE Class 7 Science Sample Paper

CBSE X Related Questions

1.
Sex is determined by different factors in various species. However, in human beings, it is determined genetically. Which amongst the following option(s) is/are correct for human beings ?
Gamete carrying X chromosome from female parent.
Gamete carrying X chromosome from male parent.
Gamete carrying Y chromosome from male parent.
- (ii) and (iii)
- (i) only
- (i) and (iii)
- (iii) only
View Solution
2.
How many bulbs of resistance \( 8 \ \Omega \) each should be connected in parallel combination to draw a current of \( 2 \text{ A} \) from a battery of \( 4 \text{ V} \) ?
View Solution
3.
When you look at an object very close to your eyes, the:
- Ciliary muscles of your eye contract and the eye lens becomes thick.
- Ciliary muscles of your eye get relaxed and the eye lens becomes thick.
- Ciliary muscles of your eye contract and the eye lens becomes thin.
- Ciliary muscles of your eye get relaxed and the eye lens becomes thin.
View Solution
4.
The reasons for excessive generation of wastes are:
(i) Use and throw policy.
(ii) Increased availability of packaged food.
(iii) Increased construction wastes.
(iv) Non-sorting of dry and wet wastes
- (i), (iii) and (iv)
- (i), (ii) and (iii)
- (i), (ii), (iii) and (iv)
- (ii), (iii) and (iv)
View Solution
5.
Due to change in length and area of cross-section of a conductor, resistance of conductor changes while resistivity does not change. Why ?
View Solution
6.
Which of the plant hormones are responsible for the following processes? Promote cell division Inhibition of growth Detection of light Wilting of leaves
View Solution