10th CBSE - Science (Chemistry)
Chapter 1, Chemical Reactions and Equations
NCERT Solutions of Science Textbook In-Text Questions
Q.1: Why should magnesium ribbon be cleaned before burning in air ?
Q.2: Write the balanced equation for the following chemical reactions:
(i) Hydrogen + Chlorine --> Hydrogen chloride
(ii) Sodium + Water --> Sodium hydroxide + Hydrogen
Q.3: Write a balanced chemical equation with state symbols for the following chemical reactions:
(i) Solution of barium chloride and sodium sulphate in water to give insoluble barium sulphate and the solution of sodium chloride.
(ii) Sodium hydroxide solution (in water) react with hydrochloric acid solution (in water) to produce sodium chloride and water.
Q.1: A reaction 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.
Q.2: 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.
Q.1: Why does the colour of copper sulphate solution change when an iron nail is dipped in it ?
Q.2: Give an example of the double displacement reaction other than the one given in Activity 1.10.
Q.3: Identify the substances that are oxidized and the substances that are reduced in the following reactions:
(i) 4Na(s) + O2(g) --> 2Na2O(s)
(ii) CuO(s) + H2(g) --> Cu(s) + H2O(liq)
Further Study on Chapter 1, Chemical Reactions and Equations
- Class 10, NCERT (CBSE) Science Notes and Sample Questions | Chapter-1, Chemical Reactions and Equations [Read]
- Class 10, CBSE (NCERT) Science | Chapter-1, Chemical Reactions and Equations | NCERT Solution - Science Textbook Exercise [Read]
- Class 10 NCERT (CBSE) Science Chemistry - Multiple choice questions (MCQ) | Chapter 1, Chemical Reactions and Equations [Read]