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

The various physical properties of a substance may include

  1. colour, odour and taste

  2. hardness, solubility and density

  3. melting point and boiling point

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

The various physical properties of a substance may include colour, odour, taste, hardness, solubility, density, melting point and boiling point.

Multiple choice

Which of the following is the correct spelling of 'preatiness'?

Directions: Read the following passage carefully and select the most suitable option from each list according to the corresponding number in the passage.
A candle's beauty is not preatiness (1) of colour or shape, but rather (2) something else: "Not the best-looking thing, but the best-acting thing." A candle taps (3) all of the known laws of the universe.
The heat of the flame melts the wax and draws up (4) currents of air to cool the wax at the periphery, thus creating a cup (5) for the molten wax, which remains horizontal thanks (6) to gravity - "the same force of gravity which holds worlds together". Capillary action draws the melted wax up the wick from cup to flame, while the flame's heat triggers (7) a chemical reaction in the wax that sustains (8) the flame.

  1. prittiness

  2. pretiness

  3. pretyness

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

The correct spellings are 'prettiness'.

Multiple choice

During normalizing process of steel the specimen is heated

  1. between the upper and lower critical temperature and cooled in still air

  2. above the upper critical temperature and cooled in furnace

  3. above the upper critical temperature and cooled in still air

  4. between the upper and lower critical temperature and cooled in furnace
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Normalizing involves prolonged heating just above the critical temperature to produce globular form of carbine and then cooling in air.

Multiple choice

Mineralwasser

  1. Mineral Water

  2. Orange juice

  3. Milk

  4. Water
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mineralwasser is the German term for mineral water, which is carbonated water.

Multiple choice

Orangeensaft

  1. Orange Juice

  2. Water

  3. Orange soda

  4. Water
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Orangensaft (misspelled as Orangeensaft in the prompt) is the German word for orange juice.

Multiple choice chemistry separation of substances substances and mixtures formation of mixtures and types of mixtures based on states types of mixtures

The constituents of the mixture are easily seen with naked eyes. Then the mixture is ____________.

  1. Homogenous

  2. Heterogenous

  3. Both (a) and (b)

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

The homogenous mixture consists of different components which are uniformly distributed in the solution and it can't be seen with naked eyes.

The heterogeneous mixture consists of two or more parts which have different compositions. These have visible boundaries of separation between the different constituents and can be easily seen even with naked eyes.

Multiple choice chemistry separation of substances substances and mixtures formation of mixtures and types of mixtures based on states types of mixtures

The example of heterogeneous mixture is:

  1. Water and stone.

  2. Water and lemon juice.

  3. Water and alcohol.

  4. Water and sugar.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A heterogeneous mixture is simply any mixture that is not uniform in composition. Two immiscible liquids form heterogeneous mixtures.

In given examples, water & lemon juice, water & alcohol, water & sugar result in uniform composition forming homogeneous mixture.
$\therefore$ Water and stone is a heterogeneous mixture.

Multiple choice chemistry separation of substances substances and mixtures formation of mixtures and types of mixtures based on states types of mixtures

A mixture refers to the physical combination of two or more substances on which the chemical identities are retained and are mixed in the form of solutions, suspensions, and colloids.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A mixture is indeed a physical combination of two or more substances where each retains its own chemical identity. They can exist as solutions, suspensions, or colloids.

Multiple choice chemistry separation of substances substances and mixtures formation of mixtures and types of mixtures based on states types of mixtures

Vinegar is a solution of acetic acid in water, it is:

  1. a homogeneous solid in liquid mixture

  2. a heterogeneous liquid in liquid mixture

  3. a homogeneous liquid in liquid mixture

  4. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Vinegar is homogenous solution because it is a completely uniform solution of liquid in liquid type of mixture (acetic acid in water)
Multiple choice chemistry separation of substances substances and mixtures formation of mixtures and types of mixtures based on states types of mixtures

Unlike gases, can all liquids in liquid mixtures form solutions.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

No, not all liquids in liquids mixture form solutions

we know that "like dissolve like", so, the liquids which have same polarity only form solutions.
for example: water and oil have different polarity and hence they do not form solution.