NCERT Solutions for class 10 Science chapter 1: Chemical Reactions and Equations

NCERT Solutions for class 10 Science chapter 1 Chemical Reactions and Equations are provided in this article. Some of the important topics in Chemical reactions and equations chapter include:

Expected no of questions: 2 to 3 questions of total 5 marks

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NCERT Solutions for Class 10 Science Chapter 1

NCERT Solutions for Class 10 Science Chapter 1 Chemical Reactions and Equations is given below.

NCERT Solutions for Class 10 Science

A chemical reaction is in which the bonds are broken within reactant molecules, and new bonds are formed within product molecules in order to form a new substance. A chemical equation is nothing but a mathematical statement which symbolizes the product formation from reactants.

Types of Chemical Reaction are as follows.

Decomposition Reaction: A decomposition reaction is a reaction that takes place when one reactant breaks down into two or more simpler substances.

Displacement Reaction: A displacement reaction occurs where an atom or a group of atoms is replaced by another atom.

Oxidation Reaction: Oxidation is defined as the loss of electrons or an increase in the oxidation state of an ion, atom, or certain atoms in a molecule. It is also described as a reaction where an element combines with oxygen.

Reduction Reaction: Reduction is defined as the gain of electrons or a decrease in the oxidation state of an ion, atom, or certain atoms in a molecule.

Corrosion is the process by where when metals react with moisture, saltwater, acid or any other substance for a long period of time, oxidation reaction occurs and metals loses their strength and get corroded. A layer of oxide of the metal forms on the surface of the metal. This layer is called as rust.

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Endothermic Reaction	Exothermic Reaction	Combustion Reaction
Photochemical Reaction	Precipitation Reaction	Chemical Reactions
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Basic Chemistry	Chemistry Formulas	Class 10 Science Notes

CBSE X Related Questions

1.
Identify the type of reproduction shown in the diagram given below:
- Budding
- Fragmentation
- Spore Formation
- Binary Fission
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2.
Which of the plant hormones are responsible for the following processes? Promote cell division Inhibition of growth Detection of light Wilting of leaves
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3.
From the given situations, identify 'Chemotropic' and 'Geotropic' movements in parts of plants, respectively:
(i) Growth of pollen tube towards ovule.
(ii) Movement of sunflower towards sunlight.
(iii) Movement of root towards Earth/Gravity.
(iv) Movement of leaves due to breeze.
- (i) and (iii) respectively
- (iii) and (i) respectively
- (i), (ii) and (iii), (iv) respectively
- (i), (iii) and (ii), (iv) respectively
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4.
State two differences between the act of chewing food and salivation on sight of food.
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5.
Briefly mention the steps in double-circulation through human heart.
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6.
Given below is a pyramid showing various trophic levels in an ecosystem:
(a) From the organisms listed below, identify which one is to be placed at which trophic level:
Deer, Grass, Lion, Snake, Rabbit
(b) Discuss the reason why primary consumers will have more energy as compared to secondary consumers?
(c) Why is the base of the pyramid broad?
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