Class 7 Science Chapter 6 MCQ

Class 7 Science Chapter 6 MCQ (Multiple Choice Questions) of Physical and Chemical Changes. It consists of important questions from the entire NCERT Textbook, intext question answers and exercises questions.

All the MCQs are given with complete explanation of answer. Attempt the questions first and then view answers for justification. Practicing with these MCQ online tests ensure you to get good marks in school exams.




Class 7 Science Chapter 6 MCQ for 2020-2021

Class: 7Science
Chapter: 6Physical and Chemical Changes
Contents:Multiple Choice Questions MCQ Tests

Class 7 Science Chapter 6 MCQ Tests for 2020-21

Class 7 Science Chapter 6 MCQ with answers and explanations are given below. All the questions are taken from NCERT Books for Class 7 Science only. There are more than 80 questions in the format of sets of 10 questions at a time. After doing one test, click on Start a New Test for more practice.

Q1

In which of the following statements is or are correct?

[A]. Dissolving common salt in water is a physical change
[B]. During rusting iron reacts with moist oxygen to form iron oxide
[C]. Tearing of paper is a physical change it cannot be reversed
[D]. All the above
Q2

In which of the following sentences is or are correct?

[A]. Rusting is a chemical change because a new substance is formed
[B]. Beating of Aluminium metal to make Aluminium foil, is a physical change
[C]. Digestion of food is a chemical change
[D]. All the above




Q3

In which of the following sentences is or are incorrect?

[A]. A change in which only the physical properties of any substances get changed and no new substances is formed.
[B]. A change in which the composition and chemical properties of the substances get changes.
[C]. Microbes produces enzymes which break down complex organic compounds into simpler substance.
[D]. None of the above.
Q4

Two drops of dilute sulphuric acid were added to 1 gram of copper sulphate powder and then small amount of hot water was added to dissolve it (Step-I). On cooling, beautiful blue coloured crystal got separated (Step-II). Step I and Step II are:

[A]. Physical and chemical changes respectively
[B]. Chemical and physical changes respectively
[C]. Both physical change
[D]. Both chemical change




Q5

Which method is used to prevent rusting?

[A]. Galvanization
[B]. Crystallization
[C]. Sedimentation
[D]. None of these
Q6

In which of the following sentences is incorrect?

[A]. Cutting of log of wood into pieces is a chemical change.
[B]. Iron pipes coated with zinc do not get rusted easily.
[C]. Condensation of steam is not a chemical change
[D]. The chemical name of baking soda is sodium hydrogen carbonate.



Q7

Boojho is writing about physical change. Read the following sentences and choose the incorrect one and help him:

[A]. Evaporation and condensation sublimation are the example of physical change.
[B]. There may be some changes in the physical properties such as state, colours, smell etc.
[C]. The composition of the matter remains on unaltered.
[D]. The physical change is usually permanent.
Q8

Consider the following sentences which is not associated with Chemical change?

[A]. Formation of a solution of soluble salt in water
[B]. Changing water into steam by heating
[C]. Ringing of an electric bell
[D]. All the above




Q9

Consider the following sentences and choose the correct one:

[A]. Making sugar solution is a physical change
[B]. A physical change is generally reversible
[C]. Grinding of wheat grain changes its size, although it is a physical change
[D]. All the above
Q10

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]. In a chemical change heat, light or both are generally given out or absorbed.
[B]. Iron utensils when exposed to moist air get gradually coated with reddish brown coating called rust.
[C]. A process of separating a pure substance in the form of crystals from the hot saturated solution by cooling is called crystallization.
[D]. None of the above



Hindi and English Medium NCERT Solutions

Class 7 Solutions for all subjects like Maths, Science, Social Science are given in Hindi and English Medium free to use or download. All Important Questions MCQ Questions of all chapters are also given for practice.