Class 9 Chemistry Exam MCQs – Practice Test 4 (Chapter 5)

Physical States of Matter Notes Questions with Answers PDF – Test 4

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Physical States of Matter Notes Q&A PDF Download – Test 4

MCQ 16: Solids whose atoms arrange themselves in different forms are:

isotopes
crystals
allotropes
amorphous

MCQ 17: The process in which the vapor molecules are recaptured by the molecules at the liquid surface is called:

evaporation
sublimation
condensation
boiling

MCQ 18: 1 atmospheric pressure is equal to:

100.345 Pa
760 kPa
101.325 kPa
1.01325 mmHg

MCQ 19: A gas that shields living things on the surface of the earth from harmful UV radiation is:

N₂
SO₂
O₂
O₃

MCQ 20: In graphite, the carbon atoms are arranged in layers of:

pentagonal arrays
heptagonal arrays
octagonal arrays
hexagonal arrays

Physical States of Matter Exam Prep – Class 9 Chemistry Notes App & e-Book

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