Prepare for the Punjab Board Class 10 Chemistry Exam 2027 with Chapter 14: State of Matter and Phase Changes – Class Test 2. This Chemistry test is designed according to the Punjab Board 2027 Model Papers and includes important multiple-choice questions (MCQs), short questions, and long questions for exam preparation. Students can revise key concepts such as kinetic energy, internal energy, evaporation, boiling, condensation, sublimation, deposition, diffusion, Charles’ law, and the relationship between boiling point and external pressure. Practice this Class 10 Chemistry Chapter 14 Test 2 to improve your conceptual understanding and prepare effectively for the Punjab Board Annual Examination 2027. Visit 786Times.com for more Class 10 Chemistry notes, chapter-wise tests, and Punjab Board model papers.
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TIME: 10 MIN
TOTAL MARKS: 30
MARKS: 8
1. The average kinetic energy of gas particles depends on:
A. Pressure
B. Volume
C. Nature of gas
D. Temperature
2. Type of internal energy is:
A. 2
B. 3
C. 4
D. 5
3. The change of gas into liquid on cooling is called:
A. Evaporation
B. Melting
C. Boiling
D. Condensation
4. The temperature of ice is:
A. 0°C
B. 10°C
C. 100°C
D. 110°C
5. Boiling point of water Murree is:
A. 0°C
B. 98°C
C. 100°C
D. 102°C
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6. Air fresheners work on the principle of:
A. Evaporation
B. Condensation
C. Sublimation
D. Melting
7. In Charles’ law, which quantity is kept constant?
A. Volume
B. Temperature
C. Pressure
D. Mass and pressure
8. HCl molecule travel distance in glass tube is
A. 100 cm
B. 59.5 cm
C. 40.5 cm
D. 14.7 cm
TIME: 22 MIN
MARKS: 22
Attempt any 7 Questions.
7 × 2 = 14
i.
Why do solids have a fixed shape and volume?
ii.
What is melting point?
iii.
What is boiling point?
iv.
What is a heating or cooling curve?
v.
Why does evaporation cause cooling?
vi.
Write difference between evaporation and boiling.
vii.
What is deposition? Give example.
viii.
Write the name materials in which sublimation printing can be done.
ix.
State Charles’ law.
x.
What is diffusion?
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SECTION-II (4 + 4)
1.
14.2.
How does the process of sublimation helpful in printing and in the usage of air freshener?
2.
Describe how boiling is related to the external pressure?
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