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Test: Heat - UPSC MCQ


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

Test: Heat for UPSC 2024 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 2024 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

Choose the correct statement when we measure the temperature of water kept in a beaker: 

Detailed Solution for Test: Heat - Question 3

While measuring temperature, the laboratory thermometer should be held vertically. It should be surrounded from all sides by the substance(water in this case) whose temperature is to be measured and hence, it should not touch the sides or the bottom of the beaker.

 

Hence, option C is correct.

Test: Heat - Question 4

Beaker A contains hot water. Beaker B contains cold water. Beaker C contains a mixture of hot and cold water. If initially your hand is put into a beaker containing ice, then putting your hand in which of the beakers A, B or C will give a sensation of warmth?

Detailed Solution for Test: Heat - Question 4

We know that ice is solid form of water which is at 0oC. And all other forms given in question are liquid forms and all liquid forms are above melting point of water that is 0oC. So compared to ice, all beakers are comparatively at higher temperature and will give sensation of warmth to our hand when we put our hand in any of these beakers after putting it in ice because they are at higher temperature than ice.

Test: Heat - Question 5

What is the range of the temperature reading of a laboratory thermometer?

Detailed Solution for Test: Heat - Question 5

 The range of the temperature reading of a laboratory thermometer -10°C – 110°C.

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 materials that conduct heat are known as ___ and the materials that do not conduct heat easily are known as ___.

Detailed Solution for Test: Heat - Question 8

The materials which allow heat to pass through them easily are conductors of heat. Examples: aluminum, iron, and copper.
The materials which do not allow heat to pass through them easily are poor conductors of heat and are known as insulators. Examples: plastic and wood.

Test: Heat - Question 9

Which one of the following metals 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

Which of the following statements is true?

Detailed Solution for Test: Heat - Question 10

In the day-time, the sun heats both the land and the sea. Land heats up more quickly than the water. Hence, it is hotter than the sea. As you know, hot air is lighter than the cold air. Therefore, warm air above the land rises. The cool air from the sea comes in to take its place. This is known as sea breeze. It cools the land near the coast.

At night, the water cools down more slowly than the land. So, the cool air from the land moves towards the sea.This is called the land breeze. Hence correct option is C.

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