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6. CHANGES AROUND US Science class 6 in English Medium ncert book solutions Important Questions with solution
6. CHANGES AROUND US Important Questions with solution – Complete NCERT Book Solutions for Class 6 Science (English Medium). Get all chapter explanations, extra questions, solved examples and additional practice questions for 6. CHANGES AROUND US Important Questions with solution to help you master concepts and score higher.
6. CHANGES AROUND US Science class 6 in English Medium ncert book solutions Important Questions with solution
NCERT Solutions for Class 6 Science play an important role in helping students understand the concepts of the chapter 6. CHANGES AROUND US clearly. This chapter includes the topic Important Questions with solution, which is essential from both academic and examination point of view. The solutions provided here are prepared strictly according to the latest NCERT syllabus and follow the guidelines of CBSE to ensure accuracy and relevance. Each question is explained in a simple and student-friendly manner so that learners can grasp the concepts without confusion. These NCERT Solutions are useful for regular study, homework help, and exam preparation. All textbook questions are solved step by step to improve problem-solving skills and conceptual clarity. Students of Class 6 studying Science can use these solutions to revise important topics, understand difficult questions, and practise effectively before examinations. The chapter 6. CHANGES AROUND US is explained in a structured way, making it easier for students to connect the theory with the topic Important Questions with solution. By studying these updated NCERT Solutions for Class 6 Science, students can build a strong foundation, boost their confidence, and score better marks in school and board exams.
6. CHANGES AROUND US
Important Questions with solution
Important Question:
Que: Give two examples of irreversible changes.
Ans:
(a) Milk to cheese
(b) Cooking of food.
Que: Give two examples of slow changes.
Ans:
(i) Growing of plants
(ii) Ripening of fruits
Qur: Give one example of change in size.
Ans: Stretching of a spring.
Que: What changes the direction of a body?
Ans: Force.
Que: What kind of change is breaking of wood - reversible or irreversible?
Ans: Irreversible.
Que: Give an example of reversible change.
Ans: Melting is an example of reversible change.
Que: Growing of nails is an example of which type of change?
Ans: Slow change.
Que: Name the process in which solid directly changes into vapour.
Ans: Sublimation.
Que: Water turns into which state when it becomes ice?
Ans: Solid state.
Que: Give an example of natural change.
Ans: Growth of a baby.
Que: Rusting of an iron is which type of change?
Ans: Irreversible change.
Que: When ice changes into water, which type of change occurs in it?
Ans: Change of state.
Que: Give an example of physical change.
Ans: Cooling of molten wax.
Que: Give an example of chemical change.
Ans: Burning of wax.
Que: What is change?
Ans: An alteration in the physical or chemical properties of a matter due to effect of some kind of energy is called change.
Que: What are the different forms of changes noticed?
Ans: The various type of changes noticed are:
1. Change in shape
2.Change in size
3. Change in colour
4. Change in state
5. Change in direction
Que: Define reversible change.
Ans.The changes in which it is possible to get back to the original product again is called reversible change.
Que: State the list of changes caused due to heating.
Ans: The changes caused due to heating are:
- Expansion
- Change in state
- Combustion
Que: What is chemical change?
Ans: The result which leads to the formation of new substance is called chemical change.
Que: What do you mean by combustion?
Ans: The property of a substance by which substance start burning on heating is called combustion.
Que: Define evaporation.
Ans: The process of conversion of liquids into its vapour state by heating is called evaporation.
Que: What do you mean by expansion?
Ans: Solids, liquids and gases occupy more space when they are heated. This is called expansion.
Que: Define fast changes with two examples.
Ans: The type of change which takes short time to complete is known as fast change. e.g.,
(i) Burning of forest.
(ii) Striking of a matchstick.
Que:List the characteristics of physical change?
Ans:
Following are the characteristics of physical change:
- No new substances are formed.
- Properties of a substance doesn’t change.
- These changes are reversible.
Que:List the characteristics of chemical change?
Ans:
Following are the characteristics of chemical change:
- Properties of products are different from reactants.
- Most of the chemical changes are irreversible.
- Loss or gain of energy occurs in a chemical change.
Que:Define melting?
Ans:The process by which solid substances melt and turn into liquid is known as melting.
Que:Define contraction?
Ans:It is the phenomenon in which a substance shrinks or changes its shape.
Que:Why the stretching of a rubber band is reversible change?
Ans:The stretching of a rubber band is a reversible change because after we leave the rubber, it gets back to its original position automatically.
Que:Why the burning of paper is an irreversible change?
Ans:
Burning of paper is an irreversible change because after burning, the paper, it is not possible to get back the same paper which was burnt.
See other sub-topics of this chapter:
1. Chapter Review 2. Exercise (NCERT Text Book) 3. Important Questions with solution 4. Important Questions with solution