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

What does evaporation mean?

  1. The process of a solid turning to liquid.

  2. The process of gas turning to liquid

  3. The process of a gas turning to a solid

  4. The process of liquid turning to gas
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Evaporation is the phase transition in which a liquid turns into a gas, typically occurring at temperatures below the boiling point at the liquid's surface. Solid to liquid is melting, and gas to liquid is condensation.

Multiple choice

How do you turn a liquid into a gas?

  1. Mix it

  2. Cool it

  3. Heat it

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

Heating a liquid increases the kinetic energy of its molecules, allowing them to overcome intermolecular forces and transition into a gas. Cooling a liquid would instead lead to freezing (turning into a solid).

Multiple choice

What are two types of changes that can happen to matter?

  1. Chemical and Physical

  2. Chemical and Spiritual

  3. Physical and Emotional

  4. Emotional and Spiritual
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Matter can undergo physical changes (which alter the form or appearance but not the chemical composition) and chemical changes (which result in the formation of new chemical substances). Spiritual and emotional changes do not apply to physical matter in science.

Multiple choice

Which is not a state of matter?

  1. Solid

  2. Gas

  3. Molecules

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

The primary states of matter are solid, liquid, and gas (as well as plasma). Molecules are particles that make up matter, not a state of matter itself.

Multiple choice

Describe concentrates ?

  1. Low in fibre, protein, high in energy

  2. Low in fibre, water, low in energy

  3. High in fibre, water, high in energy

  4. Low in fibre, water, high in energy
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Concentrates are animal feeds that are highly digestible and nutrient-dense. They are characterized by having low fiber and water content, but high energy value, making them ideal for supplementing the diets of high-producing animals.

Multiple choice

Mass flow or bulk flow involves movement of

  1. Water

  2. Minerals

  3. Food

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

Mass flow (or bulk flow) is the movement of substances in bulk from one point to another as a result of pressure differences, which applies to water, minerals, and food (in phloem).

Multiple choice

Pure water

  1. Will have the greatest water potential

  2. Has zero water potential at standard temperature and under no pressure

  3. is denoted by Greek sunil Psi

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

Pure water at standard temperature and pressure has the greatest water potential (defined as zero). It is denoted by the Greek letter Psi. Any solution has lower water potential than pure water because solute potential is always negative.