The part of the refrigerator that absorbs heat from the interior is MCQ with Answer and Explanation

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The part of the refrigerator that absorbs heat from the interior is

A. Evaporator coils

B. Condenser coils

C. Expansion valve

D. Compressor

Answer: Option A

Solution (By JKSSB Mock Tests)

Evaporator (cooling coil) absorbs heat, refrigerant evaporates.

This question belongs to: Science Physics

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Question #1

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The freezing point of mercury is -39°C. It cannot be used in thermometers for temperatures below this because

A. It expands

B. It becomes transparent

C. It freezes

D. It evaporates

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Correct Answer: Option C

Explanation:
Below freezing point, mercury solidifies and doesn't work. Alcohol thermometers used for low temps.

This question belongs to: Science Physics

Question #2

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A thermometer reads 25°C. What is the corresponding temperature in Kelvin?

A. 273 K

B. 298 K

C. 248 K

D. 325 K

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Correct Answer: Option B

Explanation:
To convert a temperature from Celsius to Kelvin, the formula is K = °C + 273.15. For most physics problems, we use 273. Therefore, K = 25 + 273 = 298 K. Kelvin is the SI unit of temperature, and it never uses a degree symbol.

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Question #3

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A ship entering a river from sea will

A. Rise a little

B. Remain same

C. Sink a little

D. Sink completely

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Correct Answer: Option C

Explanation:
Seawater density > river water. To displace same weight, ship sinks deeper in less dense river water.

This question belongs to: Science Physics

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