Chemistry · Science General

States of Matter

2,382 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 chemistry separation of substances classification of mixtures mixtures: examples and properties types of solutions

Which of the following is a mixture?

  1. Air

  2. Alloys

  3. Both A and B

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

Air is a homogeneous mixture. However, the Earth's atmosphere as a whole is a heterogeneous mixture. Alloys are made when two or more metals are mixed together. They usually are homogeneous mixtures. Examples include brass, bronze, steel, and sterling silver.

Multiple choice chemistry separation of substances classification of mixtures mixtures: examples and properties types of solutions

In a mixture of kerosene and water, kerosene forms the:

  1. Lower layer

  2. Upper layer

  3. It mixes with water and forms no layer

  4. Data insufficient
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When two liquids do not mix, they form two separate layers and are known as immiscible liquids. These two liquids can be separated by using a separating funnel. It will separate the immiscible liquids into two distinct layers depending on their densities. The heavier liquid forms the lower layer while the lighter one forms the upper layer. Kerosene has lower density than water and hence forms the upper layer.

Multiple choice chemistry separation of substances classification of mixtures mixtures: examples and properties types of solutions

A mixture is a material system made up of two or more different substances which are mixed :

  1. chemically

  2. physically

  3. both a and b

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

A mixture is a material system made up of two or more different substances which are mixed but are not combined chemically. A mixture refers to the physical combination of two or more substances on which the identities are retained and are mixed in the form of solutions, suspensions, and colloids.

Multiple choice chemistry separation of substances classification of mixtures mixtures: examples and properties types of solutions

Mixture is a physical combination of two or more pure substances.

  1. True

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

Mixture, a physical combination of two or more pure substances. A mixture is distinguished from a compound, which is formed by the chemical combination of two or more pure substances in a fixed, definite proportion. 

It should be noted that the components of a mixture retain their own chemical properties and may be present in any proportion.

Multiple choice chemistry separation of substances classification of mixtures mixtures: examples and properties types of solutions

Gunpowder is an example of a__________.

  1. compound

  2. mixture

  3. element

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Gunpowder is an explosive mixture of potassium nitrate, charcoal, and sulphur in ratio 75 : 15: 10 used in time fuses, blasting and fireworks. 
It is obtained by mixing compounds so it is not a compound or an element.
Multiple choice chemistry separation of substances classification of mixtures mixtures: examples and properties types of solutions

Which among the following statement(s) is/are true?

  1. Brass is an element

  2. Dry ice is a mixture

  3. Aerated drink, e.g., coca cola is a mixture

  4. Diesel is a mixture
Reveal answer Fill a bubble to check yourself
C,D Correct answer
Explanation

A ) Brass is an alloy made of copper and zinc.
B) Dry ice, sometimes referred to as "cardice" (chiefly British chemists), is the solid form of carbon dioxide, so it is a compound.
C) Aerated drink would be anything that would have fizz (gas) filled in it. For example, your pepsi, coke, thums up, mirinda etc.
D) Diesel is mixture of many hydrocarbons.
Options C & D are correct.

Multiple choice chemistry separation of substances classification of mixtures mixtures: examples and properties types of solutions

In a mixture, constituents exhibit:

  1. similar properties

  2. only those properties which are characteristic to the mixture.

  3. their own properties

  4. no properties
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Impure substances are commonly called mixtures. A mixture is a material containing two or more elements or compounds that are in close contact and are mixed in any proportion. The constituents of mixtures exhibit their individual properties. These constituents can be separated by physical means.

Multiple choice chemistry separation of substances classification of mixtures mixtures: examples and properties types of solutions

A _____ is a mixture of two or more substances in a single phase.

  1. Element

  2. Compound

  3. Solution

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

A solution is a mixture of two or more substances in a single phase. At least two substances must be mixed in order to have a solution. Since solutions are mixtures, their compositions may vary over a very wide range. The concentrations may be expressed using a variety of measures.