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

A matter which contains only one substance is called __________.

  1. mixture

  2. pure substance

  3. solution

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

A pure substance cannot be separated into any other kinds of matter by any physical or chemical process. It is also made up of the same particles. An element is an example of a pure substance because it cannot be broken down into simpler substance. Examples of pure substances would be: H2O (water), neon (an element), and NaCl (table salt).

Multiple choice

A mixture which is perfectly uniform in its composition and throughout its properties is called _________.

  1. heterogeneous mixture

  2. homogeneous mixture

  3. colloid

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

A homogeneous mixture is a type of mixture in which the composition is uniform. A heterogeneous mixture is a type of mixture in which the composition can easily be identified since there are two or more phases present. Air is a homogeneous mixture of the gaseous substances nitrogen, oxygen, and smaller amounts of other substances. Salt, sugar, and many other substances dissolve in water to form homogeneous mixture.

Multiple choice

Which solution is an aqueous solution?

  1. Solution of iodine in carbon tetra chloride.

  2. Solution of sulphur in carbon disulphide.

  3. Solution of alcohol in water.

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

A solution in which the solvent is water is called aqueous solution. Solution of alcohol in water is an aqueous solution.

Multiple choice

Which of the following is not correct?

  1. Stone is opaque and glass is transparent.

  2. Sand does not dissolve in water.

  3. Water has a fixed volume, but it does not have its own shape.

  4. X-ray film is a transparent object.

  5. Vinegar dissolves in water.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

No, it is translucent as we can partly see through it.