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 basic analytical techniques filtration and crystallisation other methods of separation separation techniques

Sublimation is the procedure in which ___________.

  1. solid on heating decompose.

  2. solid on heating directly converts into vapor.

  3. solid on heating converts into solid again

  4. solid on heating converts into liquid
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sublimation is the procedure in which solids on heating directly converts into vapor without converting into liquid phase. 

Multiple choice chemistry basic analytical techniques filtration and crystallisation other methods of separation separation techniques

The solid which undergoes sublimation is called ________ , whereas the solid obtained by cooling vapors is called____________ .

  1. sublimate, sublime

  2. sublime, sublimate

  3. sublime, vapor solid

  4. sublime, sublime
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sublimation is conversion of solid of vapors on heating and vapors to solid on cooling. The solid which undergoes sublimation is called sublime, whereas the solid obtained by cooling vapors is called sublimate.

Multiple choice chemistry basic analytical techniques filtration and crystallisation other methods of separation separation techniques

Which of the following will not show the property of sublimation?

  1. Ammonium chloride

  2. Common salt

  3. Camphor

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

Sublimation is the transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase. Ammonium chloride, camphor, anthracene can sublime but common salt cannot sublime.

Multiple choice chemistry basic analytical techniques filtration and crystallisation other methods of separation separation techniques

All the impurities after crystallization are left behind in:

  1. mother liquor

  2. impurity solution

  3. dirt liqour
  4. both $B$ and $C$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In crystallisation, the impure substance is dissolved in a suitable solvent to reach its nearly saturated solution at a temperature higher than the room temperature. At this high temperature, the solute has very high solubility in that solvent, so a much smaller quantity of hot solvent is needed for dissolving the solute than the solvent at room temperature.  When the solution is cooled, the pure substance is crystallised. The solution left behind is called mother liquor. All the impurities are left behind in the mother liquor. The purification method depends on the differences in solubility between the compound and the impurity.     

Multiple choice chemistry element, compound and mixture different types of solutions various mixtures introduction to solutions

A concentrated solution contains high amount of ________.

  1. solvent

  2. solute

  3. both solute and solvent

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

A concentrated solution contains the maximum amount of solute that can be dissolved because solubility depends on temperature, a solution that is concentrated at one temperature may not be concentrated at a higher temperature.

Multiple choice physics chemical effects of electric current does liquid conduct electricity? liquids conduct electricity do liquids conduct electricity?

Most liquids that conduct electricity are solutions of :

  1. acids

  2. bases

  3. salts

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

Most liquids that conduct electricity are solutions of acids, bases ,and salts (because the  solutions of acids, bases or salts are conducting in nature. They allow the current to pass through

Multiple choice biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

'volatile solids' represents

  1. Dissolved solids

  2. Organic Solids

  3. Colloidal Solids

  4. Suspended Solids
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Volatile solids are the portion of total solids that are driven off as gas during ignition at a specific temperature, typically 550 degrees Celsius. This fraction represents the organic matter present in the sample.

Multiple choice physics electric charges and fields conductors and insulators introduction to electrostatics electricity

An electrolyte is :

  1. a cell

  2. a metal

  3. a liquid that conducts electricity

  4. sugar
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Answer is C.
An Electrolyte is a substance that dissociates into ions in solution and acquires the capacity to conduct electricity. Sodium, potassium, chloride, calcium, and phosphate are examples of electrolytes, informally known as lytes. 
Therefore, it a liquid that conducts electricity.
Multiple choice chemistry p- block elements-ii hydrogen chloride chlorine - 17 group p-block elements

The boiling point of the hydrochloric acid varies with its concentration.

  1. True

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

Physical properties of $HCl$ acid such as boiling point and melting points, density and pH depend upon the concentration or molarity of $HCl$ in the aqueous solution. They range from those of water at very low conc. approaching 0% $HCl$ to values for fuming $HCl$ over 40% $HCl$.