Water in an ice cube tray is put into the freezer section of a refrigerator. As it freezes, this water — A loses all entropy B increases in entropy C decreases in entropy D has constant entropy

Entropy defines as the degree of randomness occurring in the molecules. Entropy depends on the following:-

Entropy depends on heat energy as heat energy alters the motion and randomness of the particle.

According to the question, the correct option is C that is decreased in entropy.

When the water in an ice cube tray is put into the freezer section of a refrigerator. As it freezes, this water entropy decreased because the temperature gradually decreases which slows down the movement of particles and decreases the randomness.

Hence, the correct option is C.

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Explanation:

As we know that the entropy is defined as

So here we know that initially in ice tray we put water at room temperature into this

After placing this into the refrigerator the heat is extracted out of the water due to which the entropy of water will decrease

So correct answer here will be

C decreases in entropy

it takes about 30 days for it to break down

scattering of light by tiny particles in air to produce the colors we see on sky, is dependent on the following factors:

(i) wavelength of light

(ii) size of the scattering particle  

(iii) distance traveled by light through the atmosphere.

according to rayleigh's law of scattering, the amount of scattering is inversely proportional to the fourth power of its wavelength. shorter the wavelength, greater is its scattering. hence violet/blue light is scattered more than red.

sun's light is a composite light ( visible light) with wavelengths in the range 400 nm (violet) to 700 nm (red). as sunlight passes through our atmosphere, the molecules of air scatter light according to their wavelengths. during sunrise and sunset, the sun's position is below the horizon. hence light from the sun travels a greater distance in the atmosphere when compared to its position a noon.

as sunlight enters the earth's atmosphere, blue light is scattered away and at the end of its journey in the sky, only red and orange wavelengths remain in the beam.

hence at sunrise and sunset, the sky appears reddish orange.