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Q. No.A boat carrying a number of large stones is floating in a water tank. What will happen to the water level if the stones are unloaded into the water?
| 1. | the water level remains unchanged. |
| 2. | the water level falls. |
| 3. | the water level rises. |
| 4. | the water level rises till half the number of stones are unloaded and then begins to fall. |
Subtopic: Â Properties of Fluids |
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Two substances of relative densities \(\rho_{1}\) and \(\rho_{2}\) are mixed in equal volume and the relative density of the mixture is \(4.\) When they are mixed in equal masses, the relative density of the mixture is \(3.\) The values of \(\rho_{1}\) and \(\rho_{2}\) are:
1. \(\rho_{1}=6~\text{and}~\rho_{2}=2\)
2. \(\rho_{1}=3~\text{and}~\rho_{2}=5\)
3. \(\rho_{1}=12~\text{and}~\rho_{2}=4\)
4. none of these
1. \(\rho_{1}=6~\text{and}~\rho_{2}=2\)
2. \(\rho_{1}=3~\text{and}~\rho_{2}=5\)
3. \(\rho_{1}=12~\text{and}~\rho_{2}=4\)
4. none of these
Subtopic: Â Properties of Fluids |
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The properties of a surface are different from those of the bulk liquid because the surface molecules
| (a) | are smaller than other molecules |
| (b) | acquire charge due to collision from air molecules |
| (c) | find different types of molecules in their range of influence |
| (d) | feel a net force in one direction |
Choose the correct option:
| 1. | (a) and (b) | 2. | (b) and (c) |
| 3. | (c) and (d) | 4. | All of these |
Subtopic: Â Properties of Fluids |
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Level 2: 60%+
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