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

Which of the following is a physical change?

[A]. Rusting of iron
[B]. Combustion of magnesium ribbon
[C]. Burning of candle
[D]. Melting of wax
Q2

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




Q3

Consider the following sentences and choose the incorrect one:

[A]. Cooking causes breakdown of complex molecules of carbohydrates, fats and proteins into smaller molecules.
[B]. Rusting is a reddish-brown flaky substance that forms on the surface of any substances.
[C]. Chemical change is permanent and irreversible change.
[D]. Cooking is regarded as a decomposition reaction.
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 one is a physical change?

[A]. Melting of ice
[B]. Melting of wax
[C]. Formation of steam from water
[D]. All the above
Q6

Which one is a chemical change?

[A]. Burning of paper
[B]. Germination of seed
[C]. Formation of coal from wood
[D]. All of these



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

Boojho is writing some sentences. Choose the incorrect one and help him:

[A]. Rusting of iron, photosynthesis and digestion of food are examples of chemical change.
[B]. In order to protect iron from rusting a coating of zinc is deposited on its surface.
[C]. Some substance cannot be obtained in pure state from their solution by crystallization.
[D]. None of the above.




Q9

Consider the following statements and choose the correct ones:

[A]. Corrosion of metals causes great economic loss.
[B]. Corrosion of metals can be prevented if the contact between metal and air is cutoff.
[C]. A process of giving a thin coating of zinc on Iron sheets to preventing rusting called galvanization.
[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.