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
| 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:
- Germination of seeds is considered a _Chemical_ reaction.
- If a change is permanent & irreversible it is considered a _Chemical… change.
- Heating a piece of iron is considered a _Physical_ change while heating a piece of coal (carbon) is considered a _Chemical_ change.
- Chemical changes may involve the exchange of energy in the form of _Light_ and _heat_.
- 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:
- Sublimation is …considered… a change of state of matter.
- Sublimation involves a physical change
- During sublimation a solid on heating turns directly into …vapour… and on cooling back to …solid….
- Ammonium chloride, a sublimable solid undergoes …dissociation… on heating.
- 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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