Physics Practice: Physical Quantities and Measurement (Mock Test 4 - Expert)
1. In an expert laboratory experiment, a student finds the mass of a density bottle to be $M_1$. When filled with a liquid, it is $M_2$, and when filled with water, it is $M_3$. The formula for the density of the liquid is:
2. Why does a piece of iron sink in water but float in mercury?
3. A hollow iron ball of mass $50 \text{ g}$ and volume $100 \text{ cm}^3$ is placed in water. It will:
4. The "Anomalous Expansion of Water" refers to the fact that water ________ when cooled from $4^\circ\text{C}$ to $0^\circ\text{C}$.
5. If the Relative Density of an object is $0.6$, what percentage of its volume will be submerged while floating in water?
6. An empty density bottle has a mass of $30 \text{ g}$. When full of liquid ($RD=1.2$), its mass is $90 \text{ g}$. The capacity of the bottle is:
7. A car covers the first $30 \text{ km}$ at $60 \text{ km/h}$ and the next $30 \text{ km}$ at $30 \text{ km/h}$. The average speed is:
8. Which of the following is true regarding the density of water and ice?
9. The SI unit of speed is $m/s$. What is the conversion factor to change $km/h$ to $m/s$?
10. A body of mass $200 \text{ g}$ floats in water. The apparent weight of the body is:
11. A glass stopper has an RD of $2.5$. Its density in $kg/m^3$ is:
12. Which liquid is used in a density bottle to find the volume of a solid that dissolves in water?
13. The density of a substance is $D$. If its temperature increases, its volume $V$ ________ and density $D$ ________.
14. 1 Litre is equal to ________ $dm^3$.
15. The mass of a body is measured using a beam balance as $5 \text{ kg}$. If the same body is measured on the Jupiter, its mass will be:
16. The speed of a train is $90 \text{ km/h}$. Its speed in $m/s$ is:
17. A wooden block floats in water. If we pour some oil on top of the water, the block will:
18. The density of a substance in $g/cm^3$ is numerically equal to its:
19. If a substance has an RD $> 1$, it will ________ in water.
20. The slope of a Distance-Time graph represents: