Question

32. Fluids have many useful properties that are employed in a variety of industrial and household applications. Which of the following would NOT be considered one of these properties? (Knowledge) A. fluids can hold other materials B. fluids can become solids C. fluids can be easily transported D. fluids have a definite shape and volume 33. Homogeneous mixtures are known as: (Knowledge) A. solutions B. alloys C. mechanical mixtures D. solvent mixtures 34. Iron, gold, and oxygen are all good examples of: (Knowledge) A. compounds B. mixtures C. elements D. all of the above 35. You have dissolved 42.5 g of sugar into 100 mL of a solvent. The solution is considered saturated when 37 g of sugar is dissolved in 100mL of solvent. Which statement best explains this situation? A. The solution is unsaturated. B. You could add more solute. C. The solution is saturated. D. A and B. 36. You are cleaning your bike and want to clean the bearings. They are covered in grease. The best substance to use to clean the bearings will be: (Knowledge) A. a solvent that will not dissolve the grease B. a solvent that will dissolve the grease C. water D. none of these 37. Consider a hot air balloon. Which statement is correct? (Application) A. as the balloon is heated, it becomes more dense than the surrounding air B. the balloon rises because the buoyant force is less than the force of gravity C. when the buoyant force equals the force of gravity, the balloon stops rising D. when the balloon is heated, the particles in the balloon move more slowly 38. An object will sink when: (Knowledge) A. the buoyancy force and the force of gravity are the same B. the buoyancy force is less than the force of gravity C. the density of the object is less than the density of the fluid D. the mass of the object is less than the mass of the fluid 39. What is the pressure on the ground of a person, her bike, and equipment if the total mass is 200 kg (2000 N) and the bike covers an area on the ground of 80 cm2? (Knowledge) A. 16 000 N/cm2 B. 2.5 N/cm2 C. 0.4 N/cm2 D. 25 N/cm2 40. In a detergent, there are a number of ingredients that are used to make your clothes clean. One of those is an enzyme. Its purpose is to: (Knowledge) A. give detergent colour B. add brightness C. add scent D. remove protein stains​

Answer 1

কডঙডচঢচঢকক4 কখনো কখনো বা সাংকেতিক নাম কি টেক্সট বার্তার মাধ্যমে টুইটার ব্যবহার করছেন না হলে লগিন করুন টুইটারের ধারণক্ষমতা বেশি হতে পারে না হলে লগিন করুন টুইটারের ধারণক্ষমতা বেশি হতে পারে না করে আবার চেষ্টা করুন টুইটারের ধারণক্ষমতা বেশি হতে পারে না হলে লগিন করুন টুইটারের ধারণক্ষমতা