Chemistry · Science General

States of Matter

2,682 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 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

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

Mixture perfectly uniform in its composition and properties throughout its bulk is called :

  1. homogeneous mixture

  2. heterogeneous mixture

  3. both A and B

  4. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mixture perfectly uniform in its composition and properties throughout its bulk is called homogeneous mixture, e.g., solution of alcohol in water, dust free air etc.

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

Mixture with different compositions and different properties at different locations in the mixture is called a :

  1. homogeneous mixture

  2. heterogeneous mixture

  3. Both A and B

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

Heterogeneous mixture is a mixture that consists of physically different parts each with different properties.