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 32 Class 9 Chemistry Chapter 5 Practice MCQs Test No 1 1 / 10 Evaporation causes _____ effect ,due to this effect water is contained in the pitcher. cooling heating increase in weight increase in density 2 / 10 Melting points of amorphous solid will be in _____. definite temperature value a single positive value of temperature a single negative value of temperature a particular range of temperature 3 / 10 Liquids with weak intermolecular forces contain a lot of kinetic energy easily evaporate freeze easily cannot diffuse 4 / 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 5 / 10 Sublimation is usually used to purify _____ state of matter. solids gases liquids semiliquid 6 / 10 Water bubbles arising in the beaker provided with the temperature of 100 °C is an example of _____. boiling compression distillation evaporation 7 / 10 By touch, glass imparts a hard appearance but microscopically atoms may be _____ arranged. irregularly three dimensionally uniformly regularly 8 / 10 As pressure decreases, boiling point ___ increases then decreases decreases then increases increases decreases 9 / 10 _____ phase of physical states that can never be achieved in sublimation process. gases liquids semisolid solids 10 / 10 Which of the following changes decrease the vapour pressure of water kept in a sealed vessel? Decreasing the quantity of water Decreasing the temperature of water Adding salt to water Decreasing the volume of the vessel to one-half Your score is LinkedIn Facebook Twitter VKontakte 0% Restart quiz Send feedback Practice MCQs Test No 2 /10 23 Class 9 Chemistry Chapter 5 Practice MCQs Test No 2 1 / 10 Statement related to process of evaporation that is incorrect is _____. evaporation occurs at any temperature no bubbles are formed in the liquid during evaporation evaporation takes place within the liquid temperature may change during evaporation 2 / 10 Melting points of crystalline solids are _____ due to strong intermolecular forces existing . sharp low least medium 3 / 10 Identify the figure (a) and ( b) ( a ) amorphous ( b) crystaline Both are crystalline ( a ) crystalline ( b) amorphous Both are amorphous 4 / 10 ________ is usually used to purify liquids. evaporation condensation sublimation distillation 5 / 10 Amount of vapour pressure of liquid decreases _______ Depth Above sea level None of the above At sea level 6 / 10 Which figure has a repetitive pattern in its structure? Fig B Fig A Both A and B None of the above 7 / 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 Temperature increases Pressure increases Pressure remain constant 8 / 10 If surface area of liquid is large then evaporation will be _____. minute large moderate small 9 / 10 When the atmospheric pressure equals the equilibrium vapor pressure ___ occurs. boiling melting sublimation freezing 10 / 10 The particles in ___ are always vibrating, but don't move past each other. liquid solids and liquids solids gases 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.