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 2020-21.

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 2020-21

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

Class 10 Science Chapter 1 MCQ Tests 2020-21

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

In which of the following chemical equations the abbreviations represent the correct states of the reactants and products involved at reaction temperature?

[A]. 2H2(l) +O2(l) → 2H2O (g)
[B]. 2H2(g) +O2(l) → 2H2O (l)
[C]. 2H2(g) +O2(g) → 2H2O (l)
[D]. 2H2(g)+O2(g) → 2H2O(g)
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 gases can be used for storage of fresh sample of an oil for a long time?

[A]. Carbon dioxide or oxygen
[B]. Nitrogen or oxygen
[C]. Carbon dioxide or helium
[D]. Helium or nitrogen
Q4

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.




Q5

Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of the following correctly represents the type of the reaction involved?

[A]. Displacement reaction
[B]. Precipitation reaction
[C]. Double displacement reaction
[D]. Precipitation reaction, and Double displacement reaction
Q6

Consider the given statements and choose the incorrect one:

[A]. The bubbles of hydrogen gas are produced, when zinc granules reacts with dilute sulphuric acid.
[B]. Hydrogen gas is evolved when magnesium reacts with a dilute acid.
[C]. Hydrogen gas is evolved when dilute hydrochloric acid is poured over sodium carbonate.
[D]. None of the above.
Q7

Which among the following (are) double displacement reaction (s)?

[A]. Pb + CuCl2 → PbCl2 + Cu, and CH4 + 2O2 → CO2 + 2H2O
[B]. Na2SO4 + BaCl2 → BaSO4 + 2NaCl
[C]. Pb + CuCl2 → PbCl2 + Cu, and Na2SO4 + BaCl2 → BaSO4 + 2NaCl
[D]. C + O2 → CO2, and CH4 + 2O2 → CO2 + 2H2O
Q8

Three beakers labelled as A, B and C each containing 25 mL of water were taken. A small amount of Na0H, anhydrous CuSO2 and NaCl were added to the beakers A, B and C respectively. It was observed that there was an increase in the temperature of the solutions contained in beakers A and B, whereas in case of beaker C, the temperature of the solution falls. Which one of the following statement (s) is (are) correct?

[A]. In beakers A and B, exothermic process has occurred.
[B]. In breakers A and B, endothermic process has occurred.
[C]. In beakers A and B, exothermic process has occurred, and In beaker C, endothermic process has occurred.
[D]. In breakers A and B, endothermic process has occurred, and In breaker C, exothermic process has occurred.



Q9

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

[A]. The substance which take part in a chemical reaction are called reactants.
[B]. The new substances produced as a result of chemical reaction are called products.
[C]. During a chemical reaction, atoms of one element do not change into those of another element.
[D]. None of the above
Q10

Which of the following statements about the given reaction is correct? 3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g)

[A]. Iron metal is getting oxidized, Water is getting reduced, Water is acting as reducing agent.
[B]. Water is acting as reducing agent, Water is acting as oxidising agent.
[C]. Iron metal is getting oxidized, Water is getting reduced, Water is acting as oxidising agent.
[D]. Water is getting reduced, Water is acting as oxidising agent.

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.