Physics - General Knowledge Questions and Answers

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When a bottle of perfume is opened in one corner of a room the smell spreads soon throughout the room. This is an example of

Surface tension

Capillarity

Viscosity

Diffusion

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Which of the following laws validates the statement that matter can neither be created nor destroyed ?

Law of conservation of energy

Le Chatelier's Principle

Law of conservation of mass

Law of osmosis

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The boiling point of liquids vary as

Pressure varies

Temperature varies

Volume varies

Density varies

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The freezing point of fresh water is ________ .

4°C

3°C

5°C

0°C

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The density of water is 1 g/cc. This is strictly valid at

0°C

4°C

25°C

100°C

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Specific gravity is defined as the ratio of

Density of the substance to the density of water

Density of the substance to the density of water at 0°C

Density of water at 4°C to the density of the substance

Density of the substance to the density of water at 4°C

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The cause for the Tsunami, as deduced by the seismologists, is

Gravitational pull of the moon

Low pressure trough in the ocean

Deformation of sea floor and vertical displacement of water

Sudden change in the monsoon wind

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Which statement best describes an igneous intrusion?

Igneous intrusion for when ice crystals splash into lava

Magma is injected into surrounding rock forming an igneous intrusive

Magma is exported to an open area and forms iron

Magma explodes to the surface and forms a smooth outer layer of rock

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Which is a common first indicator of an approaching thunderstorm?

Too hot

Heavy wind

A buildup of dark clouds

Lightning