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Class 10 Chemistry Chapter 14 Full Unit Test | Punjab Board 2027

Chemistry Chapter 14 Class 10 full Chapter Test

Prepare for your exams with the Class 10 Chemistry Chapter 14 Full Unit Test, based on the Punjab Board 2027 Model Papers and the latest syllabus. This State of Matter and Phase Changes test includes important multiple-choice questions (MCQs), short-answer questions, and long questions to help students revise key concepts and assess their understanding. Designed for Class 10 Chemistry students following the Punjab Boards syllabus, this chapter-wise test is useful for exam preparation, self-assessment, and practice according to the new paper pattern. Students can use this Chemistry full unit test to strengthen their knowledge of evaporation, condensation, sublimation, internal energy, and changes of physical state before their annual examinations.

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Chapter: 14 Total Time: 35 min

CHAPTER WISE CLASS TEST

(Test # 5)

Chemistry Total Marks: 25
ABCD
1 ⒶⒷⒸⒹ
2 ⒶⒷⒸⒹ
3 ⒶⒷⒸⒹ
ABCD
4 ⒶⒷⒸⒹ
5 ⒶⒷⒸⒹ
6 ⒶⒷⒸⒹ
ABCD
7 ⒶⒷⒸⒹ
8 ⒶⒷⒸⒹ
NOTE: Four possible answers A, B, C and D to each question are given. The choice which you think is correct, fill that circle in front of that question with Marker or Pen ink. Cutting or filling two or more circles will result in zero mark in that question.
TIME: 10 Min OBJECTIVE MARKS: 8
Q.1: (08)

1. Upon heating the rate of evaporation:

(A) decreases (B) increases (C) remains the same (D) initially decreases and then increases upon further heating

2. On heating a substance, its internal energy:

(A) Decreases (B) Remains constant (C) Increases (D) Becomes negative

3. The inter-particle attractions are the strongest in:

(A) Solids (B) Liquids (C) Plasma (D) Gas

4. Condensation occurs when a gas is:

(A) Heated (B) Cooled (C) Compressed only (D) Expanded

5. Cooling the vapours of some gases changes them directly into solid state. This phenomenon is called:

(A) Evaporation (B) Condensation (C) Sublimation (D) Deposition

6. Condensation point is same as:

(A) Melting point (B) Freezing point (C) Boiling point (D) Sublimation point

7. Physical state in which the particles possess the maximum energy:

(A) Solid (B) Liquid (C) Gaseous (D) Vapour

8. During sublimation, the particles of a solid absorb energy to:

(A) Form liquid (B) Form solid (C) Form gas (D) No change
TIME: 25 Min SUBJECTIVE MARKS: 17

(PART – I)

Q.2 Write short answers to following questions. (6×2=12)

i. Is condensation an endothermic process?

ii. Why do gases have no fixed shape or volume?

iii. Why does the temperature remain constant during a phase change?

iv. What happens to the particles of a solid when it is heated?

v. Is it possible to compress a liquid like a gas?

vi. Why does boiling occur at a fixed temperature?

(PART – II)

Note: Attempt the following question.

Q.3 How does the process of sublimation helpful in printing and in the usage of air freshener? (5)
786Times Class 10 Chemistry | Chapter 14 Chapter Wise Class Test

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