Class 10 NCERT Solutions Chemical Reactions and Equations (2)

Class 10 NCERT Solutions Chemical Reactions and Equations (2)- NCERT Solutions prepared for CBSE students by the best teachers in Delhi.

Chemical Reactions and Equations

Question 1: Why should a magnesium ribbon be cleaned before burning in air?

Question 2: Write the balanced equation for the following chemical reactions.

  (i) Hydrogen + Chlorine →Hydrogen chloride

  (ii) Barium chloride + Aluminium sulphate → Barium sulphate + Aluminium chloride

  (iii) Sodium + Water →Sodium hydroxide + Hydrogen

Question 3: Write a balanced chemical equation with state symbols for the following reactions.

  (i) Solutions of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride.

  (ii) Sodium hydroxide solution (in water) reacts with hydrochloric acid solution (in water) to produce sodium chloride solution and water.

Question 4: A solution of a substance ‘X’ is used for white washing.

  (i) Name the substance ‘X’ and write its formula.

  (ii) Write the reaction of the substance ‘X’ named in (i) above with water.

Question 5: Why is the amount of gas collected in one of the test tubes in Activity 1.7 double of the amount collected in the other? Name this gas.

Question 6: Why does the colour of copper sulphate solution change when an iron nail is dipped in it?

Question 7: Give an example of a double displacement reaction other than the one given in Activity 1.10. Sodium carbonate reacts with calcium chloride to form calcium carbonate and  sodium chloride.

Question 8: What happens when dilute hydrochloric acid is added to iron filings? Tick the correct answer.

  (a) Hydrogen gas and iron chloride are produced.

  (b) Chlorine gas and iron hydroxide are produced.

  (c) No reaction takes place.

Question 9: What is a balanced chemical equation?Why should chemical equations be balanced?

Question 10: Translate the following statements into chemical equations and then balance them.

  (a) Hydrogen gas combines with nitrogen to form ammonia.

  (b) Hydrogen sulphide gas burns in air to give water and sulphur dioxide.

  (c) Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate.

  (d) Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.


Students should free download the NCERT solutions and get better marks in exams. Studiestoday.com panel of teachers recommend students to practice questions in NCERT books and download NCERT solutions.

Tags: 

 


Click to View or Download pdf file
Click for more Science Study Material

Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

FAQs on Policy for Tabulation of Marks for Class 10 Board Exams

ON POLICY Question.1 How CBSE will declare the result of Class-X? Answer. Results of Class X Board will be declared on the basis of an objective criterion developed by the Board vide Notification no.CBSE/CE/2021 dated 01.05.2021. Question.2. If any candidate is not...

CBSE Assessment Framework

The Central Board of Secondary Education (CBSE) today, announced a suggested competency-based assessment framework to strengthen India’s existing school education system for secondary level (classes 6-10) and improve the overall learning outcomes of students across...

ICSE Board Exams Cancelled

The ICSE (Class X) 2021 Examination: Given the present worsening situation of the Covid- 19 Pandemic in the country, the CISCE has decided to CANCEL the ICSE (Class X) 2021 Examination. The options given in the earlier Circular dated 16th April 2021, now stands...

Time management for CBSE students

The first thing to learn about Time Management is that time is theoretical so you can’t really manage it. What you do when you get into time management, is that you manage yourself. You decide what has to be done, when it must be done and how to do it in the stipulated...

CBSE Class 12 Evaluation Criteria 2021

SUMMARY OF THE POLICY FOR TABULATION OF MARKS FOR CLASS XII BOARD EXAMINATIONS 2021   1(a) Due to cancellation of the Board examinations, the assessment of theory portion of 80/70/60/50/30 marks will be done by the school based on the following:     Class...

×
Studies Today