Chemistry · Science General

States of Matter

2,382 Questions

States of matter questions explore physical changes, evaporation, phase transitions, and the properties of liquids and gases. Topics cover density, cryosurgery, heavy water, and electrolytes. This foundational chemistry topic frequently appears in general science sections of SSC and railway exams.

Phase change mechanismsEvaporation and temperature effectsProperties of liquidsPhysical versus chemical changesElectrolytes and heavy water

States of Matter Questions

Multiple choice evs - i substances, objects and energy the states of substances introduction to matter gaseous state

Arrange the following substances in increasing order of forces of attraction.

  1. Oxygen, water, sugar

  2. Sugar, water, oxygen

  3. Water, sugar, oxygen

  4. Sugar, oxygen, water
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The forces of attraction are strongest in solids, followed by liquids and the weakest in gases.oxygen is a gas, water is a liquid and sugar is a crystalline solid. 


So the increasing order of forces of attraction is oxygen $<$ water $<$sugar.

So, the correct option is $A$

Multiple choice dew point and humidity heat physics

Formation of dew is an example for ......

  1. Boiling

  2. Melting

  3. Condensation

  4. Evaporation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

It is a example of condensation.Condensation is the process in which gas changes into a liquid when it touches a cooler surface.


Dew drops are formed due to condensation of water vapors. Air around us contains water vapors which we call moisture or humidity. Hot air contains more moisture as compared to cold air. During the night when the hot air comes into contact with some cold surface, water vapor present in it condenses on the cold surface in the form of droplets. These tiny drops of water are called dew drops

Multiple choice biology meaning of life chemical organization in living beings lipids proteins and their structure

In which of the following solvents lipids are found to be insoluble?

  1. Ether

  2. Water

  3. Chloroform

  4. Benzene
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Lipids are compounds of carbon, hydrogen and oxygen where ratio of hydrogen and oxygen is less than that of water. Lipids are esters of fatty acids and alcohol which form emulsion with water but are soluble in organic solvents. Some of the common examples of lipids are butter, ghee, cholesterol, carotene etc.

Multiple choice biology food components and nutrition water as nutrient basics of water pollution sources of water

Water has 

  1. High surface tension and low thermal conductivity.

  2. Low surface tension and low thermal conductivity.

  3. High surface tension and high thermal conductivity.

  4. Low surface tension and high thermal conductivity.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Water is unique because it possesses both high surface tension (due to hydrogen bonding) and high thermal conductivity compared to many other common liquids.

Multiple choice biology food components and nutrition water as nutrient basics of water pollution sources of water

Hydrogen bonds amongst water molecules have bestowed the property of 

  1. Liquid with ability to flow.

  2. High velocity, high specific heat and high heat of vaporisation.

  3. High boiling point and low freezing point.

  4. All of the above.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hydrogen bonds in water contribute to high specific heat, high heat of vaporization, high boiling point, and low freezing point, all of which are essential for biological life.

Multiple choice thermo flask thermos flask heat energy transfers transfer of heat physics

A                is a storage vessel that greatly lengthens the time over which its contents remain hotter or cooler than the flask's surroundings

  1. Closed flask

  2. Vacuum flask

  3. Conducting flask

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A thermoflask is a storage vessel that greatly lengthens the time over which its contents remain hotter or cooler than the flask's surroundings. As thermoflask is designed to prevent heat loss by conduction, convection and radiation.

Multiple choice thermo flask thermos flask heat energy transfers transfer of heat physics

Thermos flask, when closed, is an approximate

  1. open system.

  2. closed system.

  3. isolated system.

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An open system is a one which can exchange matter as well as energy with the surroundings. Eg: a beaker of water. A closed system is a one which can exchange only energy with the surroundings. Eg: a liquid in a closed bottle. An isolated system is a one which cannot exchange anything with the surroundings. Eg: Thermos Flask .

Multiple choice thermo flask thermos flask heat energy transfers transfer of heat physics

Which of the following is an insulating component in thermos flask?

  1. plastic foam

  2. air

  3. vacuum

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Insulating component in thermos flask are plastic foam, air, vacuum.
As plastic foam is insulator, so to prevent heat to radiate plastic foam is used just after the inner layer, plastic foam is being polished to reflect the inner heat inside, as air is bad conductor of heat it does not conduct heat just outside the outer layer. Vacuum is poor conductor of heat. It is situated between two layers, which prevents heat conduction through convection.
Multiple choice chemistry separation of substances mixtures: examples and properties types of solutions all about mixtures

Example of  a 'solid in liquid' mixture is :

  1. oil in water

  2. muddy water

  3. smoke

  4. all of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

 Phases of matter   Name of mixture  Examples
 Liquid - liquid  Emulsion  Oil in water
 Solid - liquid  Suspension  Muddy water
 Gas - liquid  Aerosol  Fizzy drinks
 gas - solid  Smoke  Smog

A mixture is a combination of two or more substances, where these substances are not bonded (or joined) to each other and no chemical reaction occurs between the substances.

Multiple choice chemistry separation of substances mixtures: examples and properties types of solutions all about mixtures

The components retain their individual properties in:

  1. Solutions

  2. Mixtures

  3. Compounds

  4. Solvents
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

1) Solution is a homogeneous mixture of two or more substances.
2)Compound a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight
3) solvent is a substance that dissolves a solute (a chemically different liquid, solid or gas), resulting in a solution.

Hence only mixtures are the one in which the individual properties of the components are retained