A English

Mix Example - MATTER IN OUR SURROUNDINGS Questions in English

Class 9 Science · MATTER IN OUR SURROUNDINGS · Mix Example - MATTER IN OUR SURROUNDINGS

153+

Questions

English

Language

100%

With Solutions

Showing 3 of 153 questions in English

151
Easy
State whether the following statement is true or false:
The term $vapor$ describes the gaseous state of a substance that normally exists as a liquid or solid.

Solution

(TRUE) The statement is $True$.
In physics and chemistry,the term $vapor$ refers to a substance in the gas phase at a temperature lower than its critical temperature. This means that the substance can be condensed to a liquid or solid state by increasing the pressure on it without lowering the temperature. Substances like water,which are liquid at room temperature,exist as $vapor$ when they evaporate.
152
Easy
State whether the following statement is true or false:
Latent heat means the heat which can be seen easily.

Solution

(B) The statement is False.
Latent heat is defined as the amount of heat energy absorbed or released by a substance during a change of state (e.g.,from solid to liquid or liquid to gas) without any change in its temperature.
It is called 'latent' (which means 'hidden') because this heat does not cause a rise in temperature and cannot be detected by a thermometer,nor can it be seen visually.
153
Easy
State whether the following statement is true or false:
Gases can be liquefied easily by applying pressure and reducing temperature.

Solution

(TRUE) The statement is True.
Explanation:
$1$. Gases consist of particles that are far apart and move randomly at high speeds.
$2$. By applying high pressure,the distance between gas particles is reduced,bringing them closer together.
$3$. By reducing the temperature,the kinetic energy of the gas particles decreases,causing them to slow down.
$4$. When particles are brought close enough and their kinetic energy is sufficiently low,the intermolecular forces of attraction become strong enough to hold them together,resulting in the transition of the gas into a liquid state.

MATTER IN OUR SURROUNDINGS — Mix Example - MATTER IN OUR SURROUNDINGS · Frequently Asked Questions

1Are these MATTER IN OUR SURROUNDINGS questions useful for JEE and NEET?

Yes. All questions in this section are mapped to JEE Main and NEET exam patterns. Previous year questions from JEE Main, NEET, GUJCET and state-level exams are included with full solutions.

2Can I switch to Hindi or Gujarati for these questions?

Yes. Use the language tabs in the hero section or the sidebar to view the same questions and solutions in English, Hindi or Gujarati.

3How do I generate a question paper from this subtopic?

Use the Vedclass Exam Paper Generator — select the chapter and subtopic, set difficulty, and generate Sets A, B, C, D automatically. First 3 chapters of every subject are free.

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D papers from this chapter in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo
For Teachers & Institutes

Generate a MATTER IN OUR SURROUNDINGS Exam Paper in 2 Minutes

Select subtopic & difficulty — Sets A, B, C, D auto-generated with No Repeat logic.

First 3 chapters of every subject are free — no payment required.