Chemistry ยท 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

Soap is used in washing because

  1. it increase the surface tension of water

  2. it lower the surface tension of water

  3. it lower the viscosity of water

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

Soap acts as a surfactant, which lowers the surface tension of water, allowing it to penetrate fabrics and lift away dirt and grease more effectively.

Multiple choice

Burning of candle is

  1. Physical change

  2. Chemical change

  3. Both physical and chemical change

  4. Neither physical and chemical change
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

its an example of both physical and chemical change

Multiple choice

Which one is a periodic change

  1. Melting of ice

  2. Change in season

  3. Dissolving sugar in water

  4. Rusting of iron
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Change is season is periodic as it repeats

Multiple choice

A liquid has

  1. Definite volume and no definite shape

  2. No definite volume no definite shape

  3. Definite shape and volume

  4. Definite shape but no definite volume
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

liquid has no definite shape

Multiple choice

Evaporation always causes

  1. Thermal expansion

  2. Liquification

  3. Cooling down

  4. All the these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

cooling of body takes place after evaporation