Test: Heat


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10 Questions MCQ Test Science & Technology for UPSC CSE | Test: Heat

Test: Heat for UPSC 2022 is part of Science & Technology for UPSC CSE preparation. The Test: Heat questions and answers have been prepared according to the UPSC exam syllabus.The Test: Heat MCQs are made for UPSC 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Heat below.
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Test: Heat - Question 1

The heat in metals is conducted by the process of:

Detailed Solution for Test: Heat - Question 1

The heat in metals is conducted by the process of conduction in which molecules in contact, transfer heat to adjacent molecules.

Test: Heat - Question 2

Heat always flows:

Detailed Solution for Test: Heat - Question 2

Heat is always the transfer of energy from an object at a higher temperature to an object at a lower temperature.

Test: Heat - Question 3

During the night,

Detailed Solution for Test: Heat - Question 3

At night, lands cool more quickly than the sea. So, air from the sea move towards the land called a sea breeze.

Test: Heat - Question 4

Freezing point of water is:

Detailed Solution for Test: Heat - Question 4

The temperature at which water starts changing into solids is called the freezing point of water.
Water freezes at 32 ºF or ºC or 273.15 K. 

Test: Heat - Question 5

Temperature is measured with the help of:

Detailed Solution for Test: Heat - Question 5

Temperature is measured with the help of a thermometer.
Clinical thermometer is used to measure body temperature.

Test: Heat - Question 6

Thermos flask keeps hot liquid hot and cold liquid cold by:

Detailed Solution for Test: Heat - Question 6

Thermos flask containers have two-layer and there is a vacuum between two layers to prevent heat loss to keep hot liquids hot and cold liquid cool.

Test: Heat - Question 7

Heat of sun reaches to earth by:

Detailed Solution for Test: Heat - Question 7

The heat from the Sun reaches us through the process of radiation. The radiant heat travels similar to the speed of light.

There are millions of miles of empty space between the Earth and the Sun. Therefore, only through radiation can heat be transferred to the Earth from the Sun, as it does not require any medium.

Test: Heat - Question 8

The normal temperature of Human body is;

Detailed Solution for Test: Heat - Question 8

The average normal body temperature is generally accepted as 98.6 °F (37 °C).

A temperature over 100.4 °F (38 °C) most often means you have a fever caused by an infection or illness.

Test: Heat - Question 9

Which one is filled in the bulb of a thermometer?

Detailed Solution for Test: Heat - Question 9

A glass tube is filled with mercury and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale.

Test: Heat - Question 10

Ventilation in the room is due to:

Detailed Solution for Test: Heat - Question 10

Ventilation is extremely necessary as it circulates air in the house, provides a constant supply of fresh air, and removes the air present before. 

Ventilation takes place due to convection. If there was no ventilation then the room might stink and there can be a feeling of stuffiness.

In the room, when air is hot its density decreases and rises up. So, ventilators help to move out hot air from the room and lower its temperature.

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