Physical Properties of Matter One Liner Questions & Answers
| Questions | Answers | |
| 1 | A drop of water is spherical in shape. This is due to – | Surface tension |
| 2 | Oil spreads on the water surface because – | Surface tension of oil is less than water |
| 3 | Kerosene oil floats on water because – | Its density is greater than the density of water. |
| 4 | Pressure inside a soap bubble is – | More than atmospheric pressure |
| 5 | If two bubbles of soap of different diameters come in contact with a tube, then what will happen? | The smaller bubble will become smaller and bigger will become bigger |
| 6 | A hydrogen-inflated polyethylene balloon is released from the surface of the earth. As the balloon rises to an altitude up in the atmosphere, it will – | Increase in size |
| 7 | What happens when some charge is placed on a soap bubble? | Its radius increases |
| 8 | Kerosene rising in the wick of the stove is due to – | Surface tension |
| 9 | In a capillary tube a fluid rises more as compared to water, this is due to the – | Surface tension of fluid is more than that of water |
| 10 | When an air bubble at the bottom of the lake rises to the top, it will – | Increased in size |
| 11 | While traveling by plane, the ink of the pen starts to come out – | Due to a decrease in air pressure |
| 12 | In automobiles hydraulic brakes work on – | Pascal’s Law |
| 13 | A sudden fall in barometer reading indicates that the weather will be – | Stormy weather |
| 14 | With the rise in temperature, the viscosity of liquid – | Decreases |
| 15 | The highest viscosity among the following is – | Honey |
| 16 | Fish can survive in a frozen lake because – | Water near the bottom does not freeze |
| 17 | Increasing the amount of a substance does not change its – | Density |
| 18 | The density of water will reach its maximum value at the temperature of – | 4º C |
| 19 | The maximum density of water is at – | 277 Kelvin |
| 20 | Why does an iron nail float on mercury while it sinks in water? | Iron has greater density than water and less than mercury. |
| 21 | A needle sinks in water whereas a ship made of iron floats on it because – |
The relative density of the needle is greater than that of water displaced by it
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| 22 | While lifting a bucket of water from a well, we feel that the bucket – | Becomes heavier above the surface of water |
| 23 | 200 gm of water is filled in a weightless balloon. Its weight in water will be – | Zero |
| 24 | The clouds float in the atmosphere because of their low – | Density |
| 25 | While floating in a sea what part of an iceberg is above the surface of the sea? | 1/9 |
| 26 | An ice cube is floating in a glass of water. What happens to the water level when the ice melts? It – | Remains the same |
| 27 | A body floats at 4°C water. If the temperature reaches 100°C then – | The body will sink |
| 28 | Why it is easier to swim in the sea than in a river? | The sea water is salty |
| 29 | When a ship enters the sea from a river, what happens? | It rises a little |