Physics
Which set of conditions represents the easiest way to liquify a gas ?

Low temperature and low pressure
High temperature and low pressure
Low temperature and high pressure
High temperature and high pressure

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Physics
Two identical solid pieces, one of gold and other of silver, when immersed completely in water exhibit equal weights. When weighed in air (given that density of gold is greater than that of silver)

Weighing will depend on their masses
Both silver and gold pieces weigh equal
The gold piece will weigh more
The silver piece will weigh more

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Physics
'Mirage' is an example of

Total internal reflection of light only
Refraction and total internal reflection of light
Refraction of light only
Dispersion of light only

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