Chapter Exam

Chapter 10: Changes Around Us — Online MCQ Test

Q: Which of the following is a physical change?

Answer: C. Melting of ice — Melting of ice changes only the state of water from solid to liquid. No new substance is formed, so it is a physical change.

Q: In a chemical change, which of the following is usually formed?

Answer: A. A new substance — A chemical change produces one or more new substances with different properties. This is the main feature of a chemical reaction.

Q: Which statement best describes a reversible change?

Answer: A. A change that can be undone — A reversible change can be changed back to the original form. Many physical changes are reversible.

Q: Which statement is correct about physical and chemical changes?

Answer: C. Physical changes do not form new substances — In a physical change, no new substance is formed. Only the state, shape, or size may change.

Q: Which of the following statements is the MOST correct?

Answer: C. Some changes are physical and some are chemical — Changes around us can be of different types. Some are physical, while others are chemical and occur in daily life too.

SCIENCE · Samacheer Kalvi 7th · Tamil Nadu State Board

Practice Chapter 10: Changes Around Us with a free chapter-wise online MCQ test for Tamil Nadu State Board Samacheer Kalvi 7th SCIENCE. This chapter covers: Physical change chemical change reaction Physical and chemical changes occurring in daily life. AI-generated questions from basic to board-exam level, with instant results and explanations.

Questions

20m

Time Limit

Attempts Left

10 random questions from this chapter (mixed difficulty)
Questions you've seen before won't repeat until the pool resets
You have 20 minutes — exam auto-submits when time is up
Maximum 3 attempts per chapter
Results and explanations shown immediately after submission

New here? Register free — includes 3 free chapter exams.

Chapter 10: Changes Around Us — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board Samacheer Kalvi 7th SCIENCE — Chapter 10: Changes Around Us, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which of the following is a physical change?

A. Burning of paper
B. Rusting of iron
C. Melting of ice ✓
D. Curdling of milk

Answer: C. Melting of ice
Melting of ice changes only the state of water from solid to liquid. No new substance is formed, so it is a physical change.

In a chemical change, which of the following is usually formed?

A. A new substance ✓
B. Only a change in shape
C. Only a change in size
D. No change at all

Answer: A. A new substance
A chemical change produces one or more new substances with different properties. This is the main feature of a chemical reaction.

Which statement best describes a reversible change?

A. A change that can be undone ✓
B. A change that always forms ash
C. A change that produces heat only
D. A change that cannot happen in nature

Answer: A. A change that can be undone
A reversible change can be changed back to the original form. Many physical changes are reversible.

Which statement is correct about physical and chemical changes?

A. Physical changes always form new substances
B. Chemical changes can usually be reversed easily
C. Physical changes do not form new substances ✓
D. Chemical changes never involve heat or light

Answer: C. Physical changes do not form new substances
In a physical change, no new substance is formed. Only the state, shape, or size may change.

Which of the following statements is the MOST correct?

A. All changes are irreversible
B. All physical changes are permanent
C. Some changes are physical and some are chemical ✓
D. Chemical changes never happen in daily life

Answer: C. Some changes are physical and some are chemical
Changes around us can be of different types. Some are physical, while others are chemical and occur in daily life too.