9th Physics Chapter7 Properties of Matter
| Sr # | Questions | A | B | C | D |
|---|---|---|---|---|---|
| 1 | When an object is immersed in a liquid, it experiences an upward force known as: | Gravitational force | Tension | Buoyant force | Friction | 2 | A solid block of iron displaces 100 cm³ of water when immersed. What is the buoyant force acting on the block? (Density of water = 1000 kg/m³) | 100 N | 980 N | 1000 N | 10 N | 3 | When a body floats in a fluid, it displaces a volume of fluid equal to its: | Mass | Volume | Weight | Density | 4 | Which of the substance is the lightest: | Copper | Mercury | Aluminium | Lead | 5 | What is the formula for calculating density? | Density = Mass/Volume | Density = Volume/Mass | Density = Mass × Volume | Density = Mass - Volume | 6 | The SI unit of density is: | kg/m | kg/m^2 | kg/m^3 | kg/m^4 | 7 | SI unit of pressure is Pascal, which is equal to: | 10⁴ Nm⁻² | 1 Nm⁻² | 10³ Nm⁻² | 10² Nm⁻² | 8 | According to Archimedes,upthrust is equal to: | weight of displaced liquid | volume of displaced liquid | mass of displaced liquid | none of these | 9 | Archimedes’ principle is related to the concept of: | Pressure | Displacement | Density | Buoyancy | 10 | Which should be the approximate length of a glass tube construct a water barometer: | 0.5 m | 1 m | 2.5 m | 11 m | 11 | If the volume of a substance increases, but its mass remains constant, what happens to its density? | Increases | Decreases | Stays the same | happens | 12 | The phenomenon of change of a liquid into a gas at any temperature below its boiling point is called: | Melting | Evaporation | Condensation | Sublimation | 13 | Which of the following is an example of a non-newtonian fluid? | Water | Honey | Gasoline | Air | 14 | The mass of an object on Earth is 60 kg. What is its weight (force due to gravity) on Earth? (Take g = 9.8 m/s²) | 588 N | 60 N | 9.8 N | 6 N | 15 | The number of perpendicular components of a force are: | 1 | 3 | 4 | 2 | 16 | Which of the following is NOT a scalar quantity? | Mass | Velocity | Distance | Time | 17 | Which of the following is a physical property of matter? | Color | Taste | Ability to burn | All of the above | 18 | The density of a substance can be found with the help of : | pascal,s law | Hooke,s law | Archimedes principle | Principle of floatation | 19 | Which of substance is the lightest: | Copper | Mercury | Aluminum | Lead | 20 | A spring balance measures: | Mass | Weight | Volume | Density | 21 | What is the formula for calculating pressure? | Pressure = Force/Area | Pressure = Area/Force | Pressure = Force × Area | Pressure = Force - Area | 22 | Rate of doing work is called: | energy | torque | power | momentum | 23 | What should be the approximate length of a glass tube to construct a water barometer? | 11 m | 2.5 m | 1 m | 0.5 m | 24 | In which of the following state molecules do not leave their position: | Liquid | Solid | Gas | Plasma | 25 | According to Hooke,s law | stress x strain = constant | stress/strain = constant | strain/stress = constant | stress = strain | 26 | Which of the following materials has the highest density? | Wood | Plastic | Iron | Aluminum | 27 | The fourth state of matter is called: | Solid | Liquid | Gas | Plasma |