CBSE Class 7 Science Physical and Chemical Changes MCQs
Refer to CBSE Class 7 Science Physical and Chemical Changes MCQs provided below available for download in Pdf. The MCQ Questions for Class 7 Science with answers are aligned as per the latest syllabus and exam pattern suggested by CBSE, NCERT and KVS. Multiple Choice Questions for Chapter 6 Physical and Chemical Changes are an important part of exams for Class 7 Science and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for CBSE Class 7 Science and also download more latest study material for all subjects
नीचे दिए गए CBSE कक्षा 7 विज्ञान भौतिक और रासायनिक परिवर्तन MCQs देखें जो पीडीएफ में डाउनलोड के लिए उपलब्ध हैं। कक्षा 7 विज्ञान के लिए MCQ प्रश्न उत्तर के साथ CBSE, NCERT और KVS द्वारा सुझाए गए नवीनतम पाठ्यक्रम और परीक्षा पैटर्न के अनुसार संरेखित हैं। अध्याय 6 भौतिक और रासायनिक परिवर्तन के लिए बहुविकल्पीय प्रश्न कक्षा 7 विज्ञान के लिए परीक्षाओं का एक महत्वपूर्ण हिस्सा हैं और यदि ठीक से अभ्यास किया जाए तो आपको अपनी समझ को बेहतर बनाने और उच्च अंक प्राप्त करने में मदद मिल सकती है। CBSE कक्षा 7 विज्ञान के लिए अधिक अध्याय-वार MCQs देखें और सभी विषयों के लिए अधिक नवीनतम अध्ययन सामग्री भी डाउनलोड करें
MCQ for Class 7 Science Chapter 6 Physical and Chemical Changes
Class 7 Science students should refer to the following multiple-choice questions with answers for Chapter 6 Physical and Chemical Changes in Class 7.
कक्षा 7 विज्ञान के छात्रों को कक्षा 7 के अध्याय 6 भौतिक और रासायनिक परिवर्तन के उत्तर के साथ निम्नलिखित बहुविकल्पीय प्रश्नों का संदर्भ लेना चाहिए।
Chapter 6 Physical and Chemical Changes MCQ Questions Class 7 Science with Answers
Physical and Chemical changes
Question. A change in which a substance undergoes changes in its physical properties is called
(a) Chemical change
(b) physical change
(c) No change
(d) Biological change
Answer : B
Question. When carbon dioxide is passed through lime water , then lime water becomes
(a) milky
(b) shiney
(c) silvery
(d) Golden yellow
Answer: A
Question. Brown colour of the apple after cutting is
(a) physical change
(b) chemical change
(c) no change
(d) biological change
Answer : B
Question. Ozone layer protects us from harmful
(a) Ultraviolet radiation
(b) Infrared Radiation
(c) Visible Radiation
(d) Heat radiation
Answer: A
Question. The process of depositing a layer of one metal over another metal surface to protect it from rusting is called
(a) Galvanisation
(b) Crystallisation
(c) amalgamating
(d) Neutralisation
Answer: A
Question. For protecting iron pipes from corrosion, they are coated with
(a) Zinc
(b) Copper
(c) Aluminium
(d) Silver
Answer: A
Question. Metal that is made by mixing iron with carbon, nickel and manganese is called
(a) Stainless steel
(b) German silver
(c) Nichrome
(d) Eureka
Answer: A
Question. The process of obtaining Salt by the evaporation of sea water is called
(a) Crystallisation
(b) Neutralisation
(c) Galvanisation
(d) Amalgamation
Answer: A
Question.
Blue colour of the copper sulphate solution changes to Green colour
when an iron nail is dropped into it due to the formation of
(a) Iron sulphate
(b) copper chloride
(c) Copper iron sulphate
(d) Iron chloride
Answer: A
Question. When Magnesium ribbon is burnt in oxygen, the product obtained is
(a) Magnesium chloride
(b) Magnesium sulphate
(c) Magnesium oxide
(d) Iron chloride
Answer : C
Question. Magnesium hydroxide, obtained when Magnesium oxide is dissolved in water, is
(a) a Base
(b) An acid
(c) an indicator
(d) a dissolving agent
Answer: A
Question. When Magnesium ribbon is burnt in candle flame it burns with
(a) brilliant red light
(b) Brilliant yellow light
(c) Brilliant white light
(d) Brilliant Green light
Answer : C
Question. How crystal of pure substances are obtained?
(a) By crystallization
(b) By chromatography
(c) By peptization
(d) By all these methods
Answer: A
Question. A chemical change may bring
(a) evolution of gas
(b) change in colour
(c) change in taste
(d) all of these
Answer: D
Question. In chemical change
(a) Change is reversible
(b) Molecules of a substance change
(c) Molecules of the substance do not change
(d) Substance remain same
Answer : B
Question. The process of forming substances in their pure state from their solution is known as:
(a) galvanisation
(b) neutralisation
(c) crystallisation
(d) all of these
Answer : C
Question. A change of state from one form to another is a
(a) physical change
(b) chemical change
(c) biological change
(d) state variation
Answer: A
Question. The shipping industry has to bear huge financial loss because of rusting of ships. The rusting of ships occur because:
(a) the body of ship is always in contact with water.
(b) the air around the ship is humid.
(c) presence of salts in sea water speed up the process of rusting.
(d) All of the above
Answer: D
Question. Which characteristic best describes a physical change?
(a) Composition changes
(b) Composition stays the same
(c) Form stays the same
(d) Mass is lost
Answer : B
Question. Which is the best method to prevent rusting?
(a) Painting
(b) Greasing
(c) Galvanization
(d) Precipitation
Answer : C
Question. When
you leave a piece of iron in the open for some time, it acquires a film
of brownish substance. The substance is called:
(a) acid
(b) base
(c) rust
(d) none of these
Answer : C
Question. Few example of chemical changes are:
(a) burning of coal
(b) food getting spoiled
(c) formation of curd
(d) all of these
Answer: D
Question. The process of depositing a layer of zinc over iron is known as
(a) aluminisation
(b) galvanisation
(c) fertilisation
(d) ironing
Answer : B
Question. Which of the following is an irreversible change ?
(a) Physical
(b) Rusting
(c) Chemical
(d) None of these
Answer : C
Question. Neutralisation is a:
(a) physical change
(b) chemical change
(c) both (a) and (b)
(d) none of these
Answer : B
Question. Which of the following changes is accompanied by sound?
(a) Photosynthesis
(b) Spoilage of food
(c) Explosion of fire works
(d) None of these
Answer : C
Question. Rusting of iron objects is faster in:
(a) deserts
(b) coastal areas
(c) both (a) and (b)
(d) none of these
Answer : B
Question. The reason for a physical change to be named as such is that the:
(a) change occurs only in physical properties
(b) transfer of energy takes place
(c) is a reversible change
(d) All of the above
Answer: A
Question. When wax vapours burns then smoke and carbon dioxide are formed which are new substances, is a:
(a) physical change
(b) chemical change
(c) both (a) and (b)
(d) none of these
Answer : B
Question. Properties like size, shape, colour, state of a substance are
(a) chemical properties
(b) mental properties
(c) physical properties
(d) physico-chemical properties
Answer : C
Question. Which among the following is a physical change?
(a) Cutting a log of wood in small pieces
(b) Burning of wood
(c) Ripening of fruit
(d) Cooking of food
Answer: A
Question. Which property stays the same during physical and chemical changes?
(a) Density
(b) Shape
(c) Mass
(d) Arrangement of particles
Answer : C
Question. A change in which the original substance can be obtained back by change of conditions is called:
(a) reversible change
(b) physical change
(c) chemical change
(d) Both (a) and (b)
Answer: D
Question. Which of the following changes can easily be reversed?
(a) Chemical Change
(b) Physical Change
(c) Both physical and chemical changes
(d) Neither physical nor chemical change
Answer : B
Question. Rusting occurs when iron is exposed to
(a) oxygen and water
(b) soil and rain
(c) breeze and sunlight
(d) salt water and clouds
Answer: A
Question. Formation of a compound is
(a) Temporary change
(b) Physical change
(c) Chemical change
(d) Reversible change
Answer : C
Question. For rusting:
(a) Only moisture is required
(b) Only air is required
(c) Both air and moistured are required
(d) None of these
Answer : C