General Science | Physics | Physical Properties of Materials
General Science | Physics | Physical Properties of Materials
1. The tendency of a liquid drop to contract and occupy minimum area is due to
Surface tension
Viscosity
Density
Vapour pressure
Correct Answer
Wrong Answer
2. The most important property of nanomaterial is
Force
Friction
Pressure
Temperature
Correct Answer
Wrong Answer
3. Spherical form of raindrop is due to
Density of liquid
Surface tension
Atmospheric pressure
Gravitational force
Correct Answer
Wrong Answer
4. The rain drops are spherical because
They fall from big height
The air has resistance
The water has surface tension
None of the above
Correct Answer
Wrong Answer
5. Oil spreads on water surface because
Oil is denser than water
Oil is less dense than water
Surface tension of oil is more than water
Surface tension of oil is less than water
Correct Answer
Wrong Answer
6. Kerosene oil floats on water because
Its density is greater than the density of water
Its density is less than the density of water
Its density is equal to that of the density of water
None of the above
Correct Answer
Wrong Answer
7. Pressure inside a soap bubble is
More than atmospheric pressure
Less than atmospheric pressure
Equal to atmospheric pressure
Half of atmospheric pressure
Correct Answer
Wrong Answer
8. If two bubbles of soap of different diameter come in contact with a tube, then what will happen?
The size of both the bubbles will remain same
The smaller bubble will become smaller and bigger will become bigger
The smaller bubble will become larger and larger will become smaller to get the same size
Both bubbles will burst as soon as they come in contact
Correct Answer
Wrong Answer
9. The size of the Respirable Suspended Particulate Matter (R.S.P.M.) in air is
more than 7μm (micron)
more than 6μm (micron)
more than 5μm (micron)
less than 5μm (micron)
Correct Answer
Wrong Answer
10. For which one of the following capillarity is not the only reason?
Blotting of ink
Rising of underground water
Spread of water drop on a cotton cloth
Rising of water from the roots of a plant to its foliage
Correct Answer
Wrong Answer
11. With the rise of temperature, the viscosity of liquid
Increases
Decreases
Remains unchanged
May increase or decrease depending on nature of liquid
Correct Answer
Wrong Answer
12. Kerosene rises in the wick of the stove is due to
Osmosis
Diffusion
Surface tension
Biogen contraction
Correct Answer
Wrong Answer
13. In a capillary tube a fluid rises more as compared to water, it is due to
Fluid is more viscous than that of water
Temperature of fluid is more than that of water
Surface tension of fluid is less than that of water
Surface tension of fluid is more than that of water
Correct Answer
Wrong Answer
14. When an air bubble at the bottom of lake rises to the top, it will
Increased in size
Decreased in size
Maintain its size
Flatten into a disc like shape
Correct Answer
Wrong Answer
15. While travelling by plane, the ink of the pen starts to come out
Due to decrease in air pressure
Due to increase in air pressure
Due to increase in volume of ink
Due to excessive load
Correct Answer
Wrong Answer
16. In automobile hydraulic brakes work on
Archimedes Principle
Newton's law of motion
Bernoulli's Principle
Pascal's Law
Correct Answer
Wrong Answer
17. A sudden fall in barometer reading indicates that the weather will be
Stormy weather
Rainy weather
Cool dry weather
Hot and humid weather
Correct Answer
Wrong Answer
18. Which of the following is the byproduct derived from the refining process of petroleum?
Petrol
Charcoal
Coal
Asphalt
Correct Answer
Wrong Answer
19. The surface of a lake is frozen in severe winter, but the water at its bottom is still liquid. Why?
Ice is a bad conductor of heat
Since, the surface of the lake is at the same temperature as the air, no heat is lost
The density of water is maximum at 4°C
None of the above
Correct Answer
Wrong Answer
20. In cold weather, aquatic animals survive even when water at the top layer of the lake freezes into ice because
They can breathe in ice
They have enough of accumulated oxygen inside them
Their body structure is such that they can survive without oxygen
Water has the highest density at 4°C so underneath the top layer of ice there is a layer of water
Correct Answer
Wrong Answer
21. Fish can survive in a frozen lake because
Fish are warm blooded animals
Fish hibernate in ice
Water near the bottom does not freeze
Ice is a good conductor of heat
Correct Answer
Wrong Answer
22. Increasing the amount of a substance does not change its
Volume
Weight
Mass
Density
Correct Answer
Wrong Answer
23. If an unsaturated sugar solution is prepared by mixing 100 grams of sugar with half litre of water, which of the following physical quantities will not change?
Mass
Density
Concentration
Volume
Correct Answer
Wrong Answer
24. The density of water will reach its maximum value at the temperature of
0°C
4°C
50°C
100°C
Correct Answer
Wrong Answer
25. The maximum density of water is at
373 Kelvin
277 Kelvin
273 Kelvin
269 Kelvin
Correct Answer
Wrong Answer
26. Why does an iron nail float on mercury while it sinks in water?
Due to less chemical interaction of iron with mercury than it is with water
Iron is heavier than water and lighter than mercury
Iron has greater density than water and lesser than mercury
Mercury is heavier than water
Correct Answer
Wrong Answer
27. A needle sinks in water whereas a ship made of iron floats on it because
The edge of the needle is pointed
The ship is flat
The ship driver, by power flat engine
Specific gravity of the needle is greater than that of water displaced by it
Correct Answer
Wrong Answer
28. An iron needle floats on the surface of water due to
Upthrust of water
Surface tension
Viscosity
Gravitational force
Correct Answer
Wrong Answer
29. While lifting a bucket of water from a well, we feel that the bucket
Becomes heavier above the surface of water
Becomes lighter above the surface of water
Loses stability on coming out of the water
Has gained mass on coming out of water
Correct Answer
Wrong Answer
30. 200 gm of water is filled in a weightless balloon. Its weight in water will be
Zero
100 gm
200 gm
400 gm
Correct Answer
Wrong Answer
31. The separation of cream from milk by churning is due to
Gravitational force
Cohesive force
Centrifugal force
None of the above
Correct Answer
Wrong Answer
32. The clouds float in the atmosphere because of their low
Temperature
Velocity
Pressure
Density
Correct Answer
Wrong Answer
33. Which of the following elements was first produced artificially?
Neptunium
Plutonium
Francium
Technetium
Correct Answer
Wrong Answer
34. While floating in a sea what part an iceberg is above the surface of the sea?
1/9
1/10
1/6
1/4
Correct Answer
Wrong Answer
35. An ice cube is floating in a glass of water. What happens to the water level when the ice melts? It
Rises
Falls
Remains the same
First rises and then falls
Correct Answer
Wrong Answer
36. A body floats at 4°C water. If temperature reaches 100°C, then
The body will sink
No change
More part of the body will submerge
The body will float freely
Correct Answer
Wrong Answer
37. Why it is easier to swim in the sea than in a river?
The sea water is salty
The sea water is deep
The sea water is heavier
The sea water is lighter
Correct Answer
Wrong Answer
38. When a ship enters a sea from a river, what happens?
It rises a little
It remains at the same level
It sinks a little
It immersed in the bottom of the sea
Correct Answer
Wrong Answer
39. Static science is associated with
Dynamic situation
Situation of rest
Mental situation
Data analyzing
