Physics Practice: Physical Quantities and Measurement (Mock Test 5 - Ultimate Comprehensive)
1. The density of a substance is defined as its mass per unit ________.
2. What is the Relative Density (R.D.) of a substance whose density is $13600 \text{ kg/m}^3$?
3. A density bottle has a capacity of $50 \text{ ml}$. What is the mass of water it can hold?
4. According to Archimedes' Principle, the upthrust on a body is equal to:
5. Why does an iron nail sink in water but float in mercury?
6. If a body floats in water with its 20% volume above the surface, its R.D. is:
7. The unit of Relative Density is:
8. A solid of mass $60 \text{ g}$ has a volume of $20 \text{ cm}^3$. Its density is:
9. Water has its maximum density at ________ °C.
10. When a body is weighed in a liquid, it appears lighter due to ________.
11. A hydrometer sinks deeper in a liquid of ________ density.
12. To measure the volume of an irregular solid like a stone, we use a ________.
13. The density of wood is $0.6 \text{ g/cm}^3$. In S.I. units, it is:
14. For a floating body, Weight of the body = ________.
15. Why does a piece of ice float on water?
16. The volume of a liquid is measured in ________.
17. A body weighs $40 \text{ gf}$ in air and $35 \text{ gf}$ in water. The apparent loss of weight is:
18. Relatve Density is the ratio of density of substance to density of ________ at 4°C.
19. If a body is heated, its volume increases and density ________.
20. Which of the following is a unit of Mass?
