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 viscosity option b: engineering physics properties of matter physics

We have three beakers A, B and C containing glycerine, water and kerosene respectively. They are stirred vigorously and placed on the table. The liquid which comes to rest at the earliest is

  1. Glycerine

  2. Water

  3. Kerosene

  4. All of them at the same time
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The rate at which a stirred liquid comes to rest depends on its viscosity. Glycerine has the highest viscosity among the given liquids, causing it to dissipate kinetic energy through internal friction most rapidly.

Multiple choice physics learning how to measure measurement of area and volume measurement of volume measurement of area, volume and density

Choose the INCORRECT statement from the following.

  1. Volume is a chemical property of matter

  2. Volume is a physical property of matter

  3. Volume is needed to find density

  4. Volume is the amount of space something takes up
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Option D is the definition of Volume. It is only a physical property of any object and has nothing to do with the chemical properties. Since density is mass/ volume, it is necessary to find density.

Multiple choice salts salts and their classification acids, bases and salts chemistry

Which technique produces a compound which is not soluble in water?

  1. Conductivity

  2. Calorimetry

  3. Precipitation

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

A reaction occurs when you mix two aqueous solutions. This is when you will find out whether a precipitate will form or not. A precipitate forms if the product of the reaction is insoluble in water.

Precipitation occurs when cations and anions in the aqueous solution combine to form an insoluble ionic solid called a precipitate.
Conductivity is the property to conduct electricity, calorimetry is the process of measuring the heat of chemical reactions and spectrophotometry is the measurement of reflection or transmission properties of the material as a function of wavelength.
Since precipitation produces a compound which is not soluble in water, the correct answer is the option (C).

Multiple choice physics electrical conductivity of liquids does liquid conduct electricity? liquids conduct electricity do liquids conduct electricity?

Which statements about conductivity of distilled water are correct?

  1. It possesses almost non-conducting nature

  2. It is obtained by distillation of water several times

  3. It is contaminated with little acid

  4. None of the above
Reveal answer Fill a bubble to check yourself
A,B Correct answer
Explanation

Water is a weak electrolyte and is almost non conducting in nature as hardly any ions are present in pure water. However if impurities are present, then the conductivity will be high. In order to obtain the true value of the conductivity of water, these ions are removed by distilling the water several times. 

Multiple choice physics electrical conductivity of liquids does liquid conduct electricity? liquids conduct electricity do liquids conduct electricity?

$H _2SO _4$ solution attached to a bulb in a beaker:

  1. cannot light the bulb

  2. can light the bulb

  3. diffuses the bulb

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

An acid in aqueous medium releases hydronium ions. Hence, it is able to conduct electricity. When sulphuric acid in aqueous medium is attached to a bulb in a beaker, current flows through it and lights the bulb.

Multiple choice archimedes' principle fluid pressure properties of matter physics

A piece of ice floats in a liquid denser than water.The liquid fills the vessel upto the edge. If ice melts completely then:

  1. water level remains unchanged

  2. water level decreases

  3. water overflows

  4. data is insufficient
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Density of ice is less than that of water. If it melts it becomes water. But still, the density of liquid is greater than water therefore, water remains on top and thus it floats and then overflows.

Multiple choice archimedes' principle fluid pressure properties of matter physics

A piece of ice is floating on water in a container. What will happen to the surface of the water when whole ice piece melts

  1. Will go up

  2. Will not change

  3. Will go down

  4. Noe of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The water level eill not change. As the mass of ice before and after melting will remain same. When the ice was floating, the volume of water displaced has the mass equal to that of ice. After melting, that mass of ice has been converted into water. 
Thus there is no net change in level.

Multiple choice archimedes' principle fluid pressure properties of matter physics

A piece of ice is floating in a beaker containing thick sugar solution of water. As the ice melts, the total level of the liquid:

  1. increases

  2. decreases

  3. remains unchanged

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

Let $\rho $=density of sugar solution $> \rho _{w}$
m=mass of ice.
In floating condition weight=upthrust
$\therefore $   $mg=V _{I}\rho g$
or $\displaystyle V _{I}=\frac{m}{\rho }$          (i)
When ice melts, m mass of ice becomes m mass of water. Volume of this water formed.
$\displaystyle V _{F}=\frac{m}{\rho _{w}}$          (ii)
Since $\rho _{w}< \rho $, $V _{F}> V _{I}$. Hence level will increase.

Multiple choice biology biology : an introduction introduction to organization of life signs of life what is living?

Important inorganic molecules of living things are

  1. Water

  2. Salts

  3. Glucose

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Water is a major component of many of the body’s lubricating fluids and transport of materials throughout an organism. Water also protects cells and organs from physical trauma.
Many other salts are important in the body. For example, bile salts produced by the liver helps break apart dietary fats, and calcium phosphate salts form the mineral portion of teeth and bones. Salts also help in maintaining pH level of body along with water and other components.
Hence correct option is "Both A and B".
Multiple choice physics heat - measurement thermometers application of various thermometric scales different types of thermometers

__________thermometers include two different metals that are bonded together and expand at different rates as they warm up.

  1. Liquid in glass

  2. Gas

  3. Bimetallic strip

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

Bimetallic thermometer include two different metals , bonded together . These two metals have different coefficients of thermal expansion , due to this they expand or contract at different rates , when put into a temperature change together .This is the principle of a bimetallic thermometer .

Multiple choice physics heat - measurement thermometers application of various thermometric scales different types of thermometers

Which of the following methods would reduce the temperature of hot tea

  1. Add more tea at the same temperature

  2. Add water at the same temperature

  3. Add water at temperature lower than the temperature of tea

  4. Add water at temperature higher than the temperature of tea
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

temperature of hot tea add water at temperature lower than the temperature of tea

Water is an  effective coolant,For a coolant a substance has to have a high specific heat capacity, meaning it can absorb a lot of heat. It also has to be nontoxic, or non-poisonous. It also needs to be fairly common, which would mean since it is readily available, the cost should be fairly low

Multiple choice physics heat - measurement thermometers application of various thermometric scales different types of thermometers

A laboratory thermometer is dipped in a beaker containing hot water. As the thermometer is removed the mercury level will

  1. rise

  2. fall

  3. it may rise or fall depending upon how much water is kept inside the beaker

  4. neither rise nor fall
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A laboratory thermometer is dipped in a beaker containing hot water. As the thermometer is removed the mercury level will fall.

As the temperature of hot water is much higher than the room temperature th level of mercury rises but when it is removed then the thermometer comes down as the temperature of room is less than the temperature of hot water hence level will fall

Multiple choice physics heat - measurement thermometers application of various thermometric scales different types of thermometers

How should a thermometer be dipped inside beaker containing water

  1. Vertically

  2. Tilted

  3. Any of the above way

  4. None of the above way
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A thermometer is a device that measures temperature or a temperature gradient. A thermometer has two important elements: (1) a temperature sensor (e.g. the bulb of a mercury-in-glass thermometer or the digital sensor in an infrared thermometer) in which some change occurs with a change in temperature, and  2.some means of converting this change into a numerical value (e.g. the visible scale that is marked on a mercury-in-glass thermometer or the digital readout on an infrared model). Thermometers are widely used in industry to monitor processes, in meteorology, in medicine, and in scientific research.thermometer be dipped inside beaker containing water vertically

Multiple choice physics heat - measurement thermometers application of various thermometric scales different types of thermometers

Choose the wrong statement when we measure the temperature of a water kept in a beaker: 

  1. Thermometer should be kept vertical so that the bulb does not touch sides or bottom of the beaker

  2. Thermometer should be kept vertical so that the bulb touches the bottom of the beaker

  3. Thermometer should not be kept tilted so that the bulb touches sides or bottom of the beaker

  4. Thermometer should be kept tilted without touching bottom or sides of the beaker
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A pot of boiling water is actually slightly higher than the boiling point. The boiling point is defined as the temperature at which the vapour pressure is exactly equal to the external pressure. The “Normal Boiling Point” is the boiling point at exactly 1 atm of pressure. If you look closely at a pot of. Piling water you'll notice bubbles rising from the bottom of the pot. Those bubbles are pure water vapour and since they have pushed back the water that is on top of themselves and the air over the water, they must have had a pressure greater than the external pressure to do that. Those bubbles will stop expanding when the pressure just exactly equals the boiling point and will stay there as they finish rising in the pot. This, the steam just above the water will be a better measure of the boiling point because it will not yet have had a chance to cool down.


Hence Option A is correct

Multiple choice physics heat - measurement thermometers application of various thermometric scales different types of thermometers

A laboratory thermometer is dipped in a beaker containing ice. As the thermometer is removed the mercury level will

  1. rise

  2. fall

  3. either rise or fall depending upon how much ice is kept inside the beaker

  4. neither rise nor fall
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A laboratory thermometer is dipped in a beaker containing ice. As the thermometer is removed the mercury level will rise.

The temperature of ice is about 0 degree celsius and temperature of  room is abut 34 degree when thermometer is removed mercury will expand and level will rise.