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#1. . An empty bottle weighs 12.4 g. When filled completely with water, it weighs 62.4 g. When filled completely with acid, it weighs 72.4 g. The relative density of the acid is

#2. . A person does not sink in the Dead sea because

#3. A ship sailing from a river to the sea

#4. The relative density of a solid according to the principle of Archimedes' is

#5. When a body is partly or wholly immersed in a liquid the apparent loss of weight is equal to the weight of the liquid displaced by the submerged portion. This is known as

#6. When a body freely floats in a liquid

#7. Two bodies, A of volume 20 cm³ and B of volume 30 cm³ are found to weigh the same when fully immersed in water. If weighed in air

#8. A bucket of water is hung from a spring balance. A piece of iron is suspended in the water without touching the sides or the bottom of the bucket. The reading of the spring balance - (a) B will weigh more than A; (b) The data is insufficient

#9. A boat loaded with rocks floats in the middle of a swimming pool. A man in the boat throws the rocks overboard. The level of water in the pool will

#10. . A balloon filled with hydrogen will

#11. The weight of a piece of cork is 20 g. What volume of the cork is immersed when it floats in water?

#12. . A weightless rubber balloon has 100 g of water in it. Its weight in water will be

#13. If the metacentric height of a ship increases, the stability of the shipped

#14. A boat gets most easily rocked if it is

#15. A piece of cork is embedded inside an ice block which floats in water. What happens to the level of water when all ice melts?

#16. A wooden block weighs 100 g. It can be just immersed in water when a weight of 25 g is placed on it. What is the specific gravity of wood?

#17. When a body is immersed in a fluid the force of buoyancy of the fluid on the bo depends on

#18. When the force of buoyancy on a fully immersed body is equal to the weight body, the body

#19. A wide-mouthed glass tube is open at both ends. A thin almost weightless metal disc is held tight at the bottom by a string passing through the tube. The tu with the disc is now lowered vertically into a jar of water. Water is now pouring into the tube. The disc will fall down

#20. A ship, due to displacement of water, experiences an upthrust at the point known as the "metacenter." To make the ship stable the metacentre should

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