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Test: Matter In Our Surroundings - 1 - UPSC MCQ


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10 Questions MCQ Test Science & Technology for UPSC CSE - Test: Matter In Our Surroundings - 1

Test: Matter In Our Surroundings - 1 for UPSC 2024 is part of Science & Technology for UPSC CSE preparation. The Test: Matter In Our Surroundings - 1 questions and answers have been prepared according to the UPSC exam syllabus.The Test: Matter In Our Surroundings - 1 MCQs are made for UPSC 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Matter In Our Surroundings - 1 below.
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Test: Matter In Our Surroundings - 1 - Question 1

Under what conditions does diffusion occur faster?

Detailed Solution for Test: Matter In Our Surroundings - 1 - Question 1

Diffusion becomes faster at high temperatures. This is because, at higher temperatures, the particles of matter gain more kinetic energy, allowing them to move more rapidly and intermix more quickly. As temperature increases, the kinetic energy overcomes the forces of attraction between particles, facilitating faster diffusion.

Test: Matter In Our Surroundings - 1 - Question 2

Which term describes the random movement of microscopic particles in a fluid due to continuous bombardment from surrounding molecules?

Detailed Solution for Test: Matter In Our Surroundings - 1 - Question 2

The random movement of microscopic particles in a fluid is known as Brownian motion. This phenomenon was first observed by Robert Brown and is a result of continuous collisions between the particles and molecules in the surrounding medium.

Test: Matter In Our Surroundings - 1 - Question 3

What is the basis for the classification of matter into three categories?

Detailed Solution for Test: Matter In Our Surroundings - 1 - Question 3

Matter is classified based on particle arrangement. The three main categories are solid, liquid, and gas, each characterized by different arrangements and behaviors of particles.

Test: Matter In Our Surroundings - 1 - Question 4

At what temperature does water boil and change rapidly into a gas at atmospheric pressure?

Detailed Solution for Test: Matter In Our Surroundings - 1 - Question 4

Water boils at 100ºC at atmospheric pressure. This is the temperature at which the liquid rapidly changes into a gas.

Test: Matter In Our Surroundings - 1 - Question 5

What is the term for the process in which a gas turns into a liquid on cooling at a specific temperature?

Detailed Solution for Test: Matter In Our Surroundings - 1 - Question 5

The process in which a gas turns into a liquid on cooling at a specific temperature is called condensation.

Test: Matter In Our Surroundings - 1 - Question 6

What is the latent heat of fusion?

Detailed Solution for Test: Matter In Our Surroundings - 1 - Question 6

The latent heat of fusion is the amount of heat energy required to change a solid into a liquid at atmospheric pressure and at its melting point.

Test: Matter In Our Surroundings - 1 - Question 7

How can gases be liquefied?

Detailed Solution for Test: Matter In Our Surroundings - 1 - Question 7

Liquefaction of gases is the process in which a gas is liquified to change its state from gas to liquid. A gases can be liquified by increasing pressure and reducing the temperature.

Test: Matter In Our Surroundings - 1 - Question 8

What factor does not affect the rate of evaporation?

Detailed Solution for Test: Matter In Our Surroundings - 1 - Question 8

 

Humidity does not affect the rate of evaporation. The rate of evaporation increases with an increase in surface area, temperature, and wind speed.

Test: Matter In Our Surroundings - 1 - Question 9

What is the process of converting a substance from the liquid state to the gaseous state at any temperature below its boiling point?

Detailed Solution for Test: Matter In Our Surroundings - 1 - Question 9

The process of converting a substance from the liquid state to the gaseous state at any temperature below its boiling point is called evaporation.

Test: Matter In Our Surroundings - 1 - Question 10

How does evaporation cause cooling?

Detailed Solution for Test: Matter In Our Surroundings - 1 - Question 10

During evaporation, the particles of liquid absorb energy or latent heat of vaporization from the surroundings. This absorption of energy makes the surroundings cold, causing evaporation to have a cooling effect.

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