Class 10 Science Chapter 1 MCQ

Class 10 Science Chapter 1 MCQ (Multiple Choice Questions) of Chemical Reactions and Equations. All the questions are taken from NCERT Textbook, ten years papers, exemplar books, CBSE Sample papers and different popular books for academic session 2021-22.

There are 25 sets of MCQ tests containing total of 125 questions with answers and explanation. We have uploaded all the questions carefully. For any error, please take screen shot and send us for modification.




Class 10 Science Chapter 1 MCQ for 2021-22

Class: 10 Science
Contents:Multiple Choice Questions – MCQ Tests

Class 10 Science Chapter 1 MCQ Tests 2021-22

Class 10 Science Chapter 1 MCQ are given below. There total of 5 questions in each test. You can attend more and more test to evaluate your practice. MCQs are now important for CBSE Exams also. Answers and explanation of each question is given just below the questions. If you have any doubt, please ask in discussion forum.

Q1

Which of the following is not a physical change?

[A]. Boiling of water to give water vapour
[B]. Melting of ice to give water
[C]. Dissolution of salt in water
[D]. Combustion of Liquefied Petroleum Gas (LPG)
Q2

Pooja is writing some statements. She wants to know in which of the following statements is or are incorrect?

[A]. When hydrogen burns in oxygen to form water.
[B]. Liquid hydrogen burns to lift the space shuttle out of the earth’s gravitational field.
[C]. When glucose undergoes to slow combustion by combining with oxygen in the cells of our body to produce energy.
[D]. As a fuel CNG and LPG gives more energy than hydrogen.




Q3

Which of the following statement is or are incorrect?

[A]. A balanced chemical equation has an equal number of atoms of different elements in the reactants and products.
[B]. Zinc reacts with dilute sulphuric acid to give zinc sulphate and hydrogen.
[C]. An unbalanced chemical equation has an unequal number of atoms of one or more elements in the reactants and products.
[D]. Law of conservation of mass can emphasis that matter can neither be created but destroyed in a chemical reaction.
Q4

Consider the following statements and choose in which of the given reaction, where heat is absorbed?

[A]. The chemical reaction between quicklime and water to form slaked lime is characterized by a changing in temperature.
[B]. The chemical reaction between zinc granules and dilute sulfuric acid is also characterized by a change in temperature.
[C]. The chemical reaction between barium hydroxide and ammonium chloride to form barium chloride, ammonia and water is characterized by a change in temperature.
[D]. The chemical reaction in which carbon burns in air to form carbon dioxide and energy.




Q5

Boojho appeared in class test where he wrote some statements but he confused to know the correct statement. Would you help him to know that?

[A]. Some chemical reaction and are characterized by a change in colour.
[B]. The purple colour of potassium permanganate solution disappears when citric acid reacts with potassium permanganate solution.
[C]. The orange colour of potassium dichromate solution changes to green when sulphur dioxide gas is passed through acidified potassium dichromate solution.
[D]. All the above.
Q6

Which among the following statement (s) is (are) true? Exposure of silver chloride to sunlight for a long duration turns grey due to:

[A]. The formation of silver by decomposition of silver chloride.
[B]. The formation of silver by decomposition of silver chloride, and Decomposition of chlorine gas from silver chloride.
[C]. Sublimation of silver chloride, and Decomposition of chlorine gas from silver chloride.
[D]. Oxidation of silver chloride.




Q7

It is advised that before burning in air, the magnesium ribbon is cleaned by rubbing with sandpaper. Why?

[A]. So that, it may readily combine with the oxygen of air.
[B]. So that, it may looks very shining.
[C]. So that, it can easily see by naked eyes at the time of burning.
[D]. None of the above.
Q8

A dilute ferrous sulphate solution was gradually added to the beaker containing acidified permanganate solution. The light purple colour of the solution fades and finally disappears. Which of the following is the correct explanation for the observation?

[A]. KMnO4 is an oxidising agent, it oxidises FeSO4.
[B]. FeSO4 acts as an oxidizing agent and oxidizes KMnO4.
[C]. The color disappears due to dilution; no reaction is involved.
[D]. KMnO4 is an unstable compound and decomposes in presence of FeSO4 to a colorless compound.



Q9

Which of the following are exothermic processes?

[A]. Reaction of water with quick time, Dilution of an acid
[B]. Dilution of an acid, Evaporation of water
[C]. Reaction of water with quick time, Sublimation of camphor (crystals)
[D]. Evaporation of water, Sublimation of camphor (crystals)
Q10

The following reaction is an example of a: 4NH3 (g) +5O2 (g) → 4NO (g) +6H2O (g)

[A]. Displacement reaction, neutralisation reaction
[B]. Combination reaction, redox reaction
[C]. Displacement reaction, redox reaction
[D]. Redox reaction, neutralisation reaction

Prepare Class 10 Science Chapter 1 Chemical Reactions and Equations from NCERT Textbook and then practice the questions given in the end of the chapter. At this stage MCQs are important for the revision of concepts and missing terms related to the chapters. If you read 5 times the same chapter from NCERT, every time you will get something new again. It means we have to revise the chapter again and again.

Is Class 10 Science Chapter 1 Chemical Reactions and Equations important for MCQ?

There are so many questions in chapter 1 of class 10 science, which may be asked in CBSE Board exams as MCQs.

Should I prepare Activities also, given in Chapter 1 of class 10 Science, for MCQ?

Activities are important not only for MCQ, but the theoretical questions also. In CBSE 2020 exams, there were three questions based on activities.

Are MCQ asked from back exercises of Class 10 Science chapter 1?

MCQs can be asked from entire book, whether it is intext questions or end exercises questions.

How do I prepare for MCQs of 10th Science Chapter 1?

Prepare the chapter 1 NCERT Textbook of class 10 science and read each important reaction carefully. MCQs are generally asked from with in the chapter text.