Chemistry 9 Chapter 5 MCQs Tests by admin | Class 9 MCQs Tests | 0 comments In this post, we have prepared 2 MCQs tests of Federal Board Chemistry 9 Chapter 5 MCQs Tests. For more Class 9 Chemistry MCQs Tests visit this page. Chemistry 9 Chapter 5 MCQs Tests Practice MCQs Test No 1 /10 25 Class 9 Chemistry Chapter 5 Practice MCQs Test No 1 1 / 10 Liquids with weak intermolecular forces cannot diffuse easily evaporate contain a lot of kinetic energy freeze easily 2 / 10 Water bubbles arising in the beaker provided with the temperature of 100 °C is an example of _____. distillation boiling compression evaporation 3 / 10 By touch, glass imparts a hard appearance but microscopically atoms may be _____ arranged. three dimensionally irregularly regularly uniformly 4 / 10 Which of the following changes decrease the vapour pressure of water kept in a sealed vessel? Decreasing the temperature of water Adding salt to water Decreasing the quantity of water Decreasing the volume of the vessel to one-half 5 / 10 Evaporation causes _____ effect ,due to this effect water is contained in the pitcher. increase in density cooling increase in weight heating 6 / 10 Sublimation is usually used to purify _____ state of matter. gases liquids semiliquid solids 7 / 10 As pressure decreases, boiling point ___ decreases decreases then increases increases then decreases increases 8 / 10 The boiling point of water is 100 °C, where internal vapour pressure becomes equal to atmospheric pressure. What is that atmospheric pressure? 1 atm all of the above 760 mm Hg 101.325 kpa 9 / 10 Melting points of amorphous solid will be in _____. a single positive value of temperature definite temperature value a particular range of temperature a single negative value of temperature 10 / 10 _____ phase of physical states that can never be achieved in sublimation process. gases solids semisolid liquids Your score is LinkedIn Facebook Twitter VKontakte 0% Restart quiz Send feedback Practice MCQs Test No 2 /10 25 Class 9 Chemistry Chapter 5 Practice MCQs Test No 2 1 / 10 A person living in hill stations observed that cooking food without using pressure cooker takes more time. The reason for this observation is that at high altitude_____ Pressure decreases Pressure remain constant Pressure increases Temperature increases 2 / 10 The particles in ___ are always vibrating, but don't move past each other. gases solids and liquids liquid solids 3 / 10 Amount of vapour pressure of liquid decreases _______ At sea level Depth Above sea level None of the above 4 / 10 If surface area of liquid is large then evaporation will be _____. minute small moderate large 5 / 10 Melting points of crystalline solids are _____ due to strong intermolecular forces existing . sharp medium low least 6 / 10 When the atmospheric pressure equals the equilibrium vapor pressure ___ occurs. boiling melting sublimation freezing 7 / 10 Which figure has a repetitive pattern in its structure? Fig B Both A and B None of the above Fig A 8 / 10 ________ is usually used to purify liquids. evaporation distillation condensation sublimation 9 / 10 Identify the figure (a) and ( b) ( a ) amorphous ( b) crystaline Both are amorphous Both are crystalline ( a ) crystalline ( b) amorphous 10 / 10 Statement related to process of evaporation that is incorrect is _____. evaporation occurs at any temperature temperature may change during evaporation evaporation takes place within the liquid no bubbles are formed in the liquid during evaporation Your score is LinkedIn Facebook Twitter VKontakte 0% Restart quiz Send feedback Submit a Comment Cancel replyYou must be logged in to post a comment.