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 chemistry properties of natural resources conservation of water and recycling properties of water structure and properties of water

Which one of the following property is high in the case of water?

  1. Surface tension

  2. Specific heat

  3. Heat of vaporization and heat of fusion

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Physical properties of water
1.Boiling Point and Freezing Point.
2.Surface Tension, Heat of 3.Vaporization, and Vapor Pressure.
4.Viscosity and Cohesion.
5.Solid State.
6.Liquid State.
7.Gas State.
8.High specific heat capacity.
Multiple choice chemistry properties of natural resources conservation of water and recycling properties of water structure and properties of water

When we heat water, we can find bubbles coming from it. This shows that:

  1. water contains air

  2. air contains water

  3. hot water becomes bubbles

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

When we heat water, we can find bubbles coming from it. This is because the solubility of gases decreases as the temperature increases and that is why the dissolved air bubbles go out from the water. Then as the boiling point of the water is reached ($100^{\circ}C$), water vapour starts to form inside the liquid in the form of bubbles.  

Hence, option (A) is correct.

Multiple choice chemistry properties of natural resources conservation of water and recycling properties of water structure and properties of water

Pure water is:

  1. colourless and opaque

  2. colourless and transparent

  3. coloured and transparent

  4. colourless, odourless and transparent
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pure water, also known as purified water, is water from a source that has removed all impurities. Distilled water is the most common form of pure water. The water can be purified by carbon filtration, microporous filtration and ultraviolet oxidation. Some places use a combination of purification processes. Pure water is colorless, odorless and transparent.

Multiple choice chemistry properties of natural resources conservation of water and recycling properties of water structure and properties of water

Water exists in which of the following state?

  1. solid

  2. liquid

  3. gas

  4. all of above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Water exists in solid state (ice), liquid state (water) and gaseous state (steam or water vapours).
Water is the only substance that exists on earth in all the three physical states: solid, liquid and gas. Earth has rivers, lakes and oceans in liquid form. 

Polar regions are covered with solid water called ice. Water absorb solar energy and evaporate and escape as water vapour.

Multiple choice chemistry properties of natural resources conservation of water and recycling properties of water structure and properties of water

Which of the following is a universal solvent?

  1. water

  2. alcohol

  3. acetic acid

  4. both A and B
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Water is  a universal solvent.  Water is capable of dissolving a variety of different substances. It dissolves more substances than any other liquid. Water is important to every living thing on earth. Wherever water goes, either through the ground or through our bodies, it takes along valuable chemicals, minerals, and nutrients.

Multiple choice chemistry properties of natural resources conservation of water and recycling properties of water structure and properties of water

Water is ______ in nature?

  1. acidic

  2. basic

  3. neutral

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

Water is neutral in nature.
Since pH is defined as the negative log of the hydrogen ion concentration, the pH of pure water is 7 or neutral. Pure water is neutral because the number of positive hydrogen ions produced is equal to the number of negative hydroxide ions.

Multiple choice chemistry properties of natural resources conservation of water and recycling properties of water structure and properties of water

Which property of water is used while washing clothes?

  1. Odour

  2. Colour

  3. Solubility

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

Water is a good solvent. It combine with dirt and other particles with it when treated with soap, which is water soluble and form lather in water. Hence due to its solubility it is used while washing clothes. 

Multiple choice chemistry properties of natural resources conservation of water and recycling properties of water structure and properties of water

Water has maximum density at

  1. Room temperature
  2. ${4}^{o}C$
  3. ${0}^{o}C$
  4. $-{4}^{o}C$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
When Water is in its Solid Form (Ice) below $0^0 C$, it is forced into a regular Cage like Structure with small voids due to which the Volume of Ice is larger.
At $4^0 C$, the Cage like Structure of Ice starts to break and the molecules can slide along each other, closing the empy voids due to which momentarily the Volume of Water decreases. Due to decrease in Volume, Density increases because Density is inversely proportional to Volume.
As temperature rises to over $4^0 C$, the extra space needed by increased motion of water molecules starts being larger than the space gained due to structural changes and the molecules start to move away from each other due to which the Volume again increases and Density decreases.

Thus, Density maximum is reached at $4^0C$.