NCERT Solutions for Class 10 Science Chapter 1

NCERT Solutions for Class 10 Science Chapter 1 Chemical Reactions and Equations Page 6 or Page 10 or Page 13 and Exercises in English or  पेज 6 के उत्तर or पेज 11 के उत्तर or पेज 15 के उत्तर and अभ्यास के प्रश्न उत्तर  in Hindi Medium free to use online or download in PDF form. For the solutions of other subjects visit to NCERT Solutions main page.


NCERT Solutions for Class 10 Science Chapter 1

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10 Science Page 6 Answers

NCERT Solutions for Class 10 Science Chapter 1 Chemical Reactions and Equations page 6 are given below. For other answers visit to Page 10 or Page 13 and Exercises in English or go for हिंदी मीडियम Solutions. Visit to Class 10 Science main page or move to Top of the page.

10 Science Chapter 1 Intext questions on page 6

10 Science Page 10 Answers





NCERT Solutions for Class 10 Science Chapter 1 Intext questions on page 10 are given below. For other answers visit to Page 6 or Page 13 and Exercises in English or go for हिंदी मीडियम Solutions. Visit to Class 10 Science main page or move to Top of the page.

10 Science Chapter 1 Intext questions on page 10

10 Science Page 13 Answers




NCERT Solutions for Class 10 Science Chapter 1 Intext questions on page 13 are given below. For other answers visit to Page 6 or Page 10 and Exercises in English or go for हिंदी मीडियम Solutions. Visit to Class 10 Science main page or move to Top of the page.

10 Science Chapter 1 Intext questions on page 13

10 Science Exercises Answers




NCERT Solutions for Class 10 Science Chapter 1 Exercises question answers are given below. For other answers visit to Page 6 or Page 10 or Page 13 or go for हिंदी मीडियम Solutions. Visit to Class 10 Science main page or move to Top of the page.

NCERT Solutions for Class 10 Science Chapter 1 Exercises question answers
NCERT Solutions for Class 10 Science Chapter 1 Exercises




NCERT Solutions for Class 10 Science Chapter 1 Exercises answers in pdf form
NCERT Solutions for Class 10 Science Chapter 1 Exercises in english medium



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NCERT Solutions for Class 10 Science Chapter 1 Exercises all question answers

10 विज्ञान पेज 6 के उत्तर




NCERT Solutions for Class 10 Science Chapter 1 Intext questions on page 6 in Hindi are given below. For other answers visit to पेज 11 के उत्तर or पेज 15 के उत्तर or अभ्यास के प्रश्न उत्तर  or go for English Medium Solutions. Visit to Class 10 Science main page or move to Top of the page.

10 Science Chapter 1 page 6 Question answers

10 विज्ञान पेज 11 के उत्तर





NCERT Solutions for Class 10 Science Chapter 1 Intext questions on page 11 in Hindi are given below. For other answers visit to  पेज 6 के उत्तर or पेज 15 के उत्तर or अभ्यास के प्रश्न उत्तर  or go for English Medium Solutions. Visit to Class 10 Science main page or move to Top of the page.

10 Science Chapter 1 page 11 Question answers

10 विज्ञान पेज 15 के उत्तर




NCERT Solutions for Class 10 Science Chapter 1 Intext questions on page 15 in Hindi are given below. For other answers visit to  पेज 6 के उत्तर or पेज 11 के उत्तर or अभ्यास के प्रश्न उत्तर  or go for English Medium Solutions. Visit to Class 10 Science main page or move to Top of the page.

10 Science Chapter 1 page 15 Question answers

10 विज्ञान अभ्यास के प्रश्न उत्तर




NCERT Solutions for Class 10 Science Chapter 1 अभ्यास के प्रश्न उत्तर are given below. For other answers visit to  पेज 6 के उत्तर or पेज 11 के उत्तर or पेज 15 के उत्तर or go for English Medium Solutions. Visit to Class 10 Science main page or move to Top of the page.

10 Science Chapter 1 Solutions
10 Science Chapter 1 Solutions chemical reactions and equations




10 Science Chapter 1 Solutions in pdf form
10 Science Chapter 1 Solutions in hindi medium free




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Visit to Class 10 Science main page or move to Top of the page



10 Science – Chemical Reactions and Equations

Some Important Questions with Answers

Question 1:
What is meant by a skeletal chemical equation? Using suitable chemical reaction, differentiate between a skeletal chemical equation and a balanced chemical equation.
Answer 1:
If the number of atoms of any element in a chemical equation is not equal on both sides, then it is a skeletal equation. For example:

Class 10 Science - Chemistry Solutions 1Here, the number of chlorine and hydrogen atoms are not equal on both sides.
In a Balance equation, the numbers of atoms of different elements on both sides of a chemical equation are equal. For example:

Class 10 Science - Chemistry Solutions 2Question 2:
Explain the following terms with examples in each case:
(i) Oxidation and (ii) Reduction.
Answer 2:
(i) Oxidation: it us a process (a) in which oxygen or any electronegative element is added up or (b) hydrogen or any electropositive element is removed. Examples are:
(a)Sulphur burns in the air with a blue flame to form sulphur dioxide. Here oxygen is added up to sulphur.

Class 10 Science - Chemistry Solutions 8

(b) Hydrogen sulphide combines with iodine to give hydrogen iodine and sulphur.

Class 10 Science - Chemistry Solutions 9

(ii) Reduction: It is a process in which (a) Hydrogen or an electropositive element is added up.

(b) Oxygen or electronegative element is removed.

Examples are:
(a)Hydrogen reacts with chlorine to form hydrogen chloride.

Class 10 Science - Chemistry Solutions 10

(b)Copper oxide is reduce with hydrogen.

Class 10 Science - Chemistry Solutions 11

Question 3:
Why is respiration considered an exothermic reaction? Explain.
Answer 3:
During digestion, food is broken down into simpler substances. Food like rice, potato and bread are made up of carbohydrates. These carbohydrates are further broken down into glucose. Glucose during respiration (inhalation of oxygen) is oxidised with the liberation of energy as shown below:

Class 10 Science - Chemistry Solutions 14

Thus, respiration is an exothermic process.


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