Physical and Chemical Changes MCQs Class-7 Dalal Simplified ICSE Chemistry Solutions MCQs Class-7 Dalal Simplified ICSE Chemistry Solutions Chapter-2

Physical and Chemical Changes MCQs Class-7 Dalal Simplified ICSE Chemistry Solutions Chapter-2 Dr Viraf J Dalal Middle School Allied Publishers Solutions. Chapter-2. We Provide Step by Step Solutions of Exercise/Lesson -2  MCQs, Fill in the blanks, Match the following, True/False, Name the following of Dr Viraf J Dalal Middle School Chemistry Allied Publishers. Visit official Website CISCE for detail information about ICSE Board Class-7.

Physical and Chemical Changes MCQs Class-7 Dalal Simplified ICSE Chemistry Solutions Chapter-2

Physical and Chemical Changes MCQs Class-7 Dalal Simplified ICSE Chemistry Solutions Chapter-2

Board ICSE
Class 7th
Subject Chemistry
Book Name Dalal New Simplified
Chapter-2 Physical and Chemical Changes
Unit-1 Physical and Chemical Changes
Topic Solution of exercise MCQs
Session 2023-24

Objective Type Questions

Physical and Chemical Changes MCQs Class-7 Dalal Simplified ICSE Chemistry Solutions Chapter-2

Question- 1. Fill in the blanks with the appropriate words for each of the statements given below:

  1. Germination of seeds is considered a _Chemical_ reaction.
  2. If a change is permanent & irreversible it is considered a _Chemical… change.
  3. Heating a piece of iron is considered a _Physical_ change while heating a piece of coal (carbon) is considered a _Chemical_ change.
  4. Chemical changes may involve the exchange of energy in the form of _Light_ and _heat_.
  5. Change of milk into curd is a _Desirable_ change.

Question -2. State whether the following statements are true or false. If false write – the correct statement.

Statement True/Fales
1. Desirable changes are meaningful, while undesirable changes are unfavourable. T
2. During physical changes, the composition of the original substance is not altered, but the properties of the original substance are altered. T
3. During a chemical change the composition of the original substance is not altered and the change is irreversible. F
4. Melting of butter and wax are examples of chemical changes. F
5. Melting of ice is an exothermic, irreversible chemical change. F

Question-3. Match the examples of changes in List I with the correct.

List I List II
1. Expansion of a steel rod on heating A. Physical
2. Rotting of eggs B. Chemical
3. Milk turning sour
4. Tarnishing of copper
5. Separation naphthalene from a mixture of naphthalene and sodium chloride

Answer: 

List I List II
1. Expansion of a steel rod on heating A. Physical
2. Rotting of eggs B. Chemical
3. Milk turning sour C. Chemical
4. Tarnishing of copper D. Chemical
5. Separation naphthalene from a mixture of naphthalene and sodium chloride E. Physical

Question-4. Fill in the blanks with the correct words for each of the statements given below:

  1. Sublimation is …considered… a change of state of matter.
  2. Sublimation involves a physical change
  3. During sublimation a solid on heating turns directly into …vapour… and on cooling back to …solid….
  4. Ammonium chloride, a sublimable solid undergoes …dissociation… on heating.
  5. Sublimation of iodine is an example of …physical… change

Question-5. Name the following:

Question: 1. The product obtained during ‘photosynthesis’ – which is a chemical change.

Answer: Glucose and oxygen

Question: 1. The term involved in the change of state from – ”water to ice’ – which is a physical change.

Answer: Freezing point

Question: 1. The final product of the physical change involved during ‘melting of a piece of wax’.

Answer: Wax

Question: 1. The type of change i.e. physical or chemical involved – ‘during respiration in human beings.’

Answer: Chemical change

Question: 1. The type of change i.e. physical or chemical involved – ‘when a substance undergoes a change in state, colour or size.

Answer: Chemical change

– : End of Matter and Its Composition MCQs Class-7 Dalal Simplified Solutions :–

Return to –  Dalal Simplified Chemistry for ICSE Class-7 Solutions

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