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 evs look, learn and experience brief introduction to atoms of elements elements and atoms introduction of atom

A mixture is made from different substances that are ___________.

  1. not chemically joint

  2. chemically joint

  3. physically joint

  4. not physically joint
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A mixture is made from different substances that are not chemically joined. 


For example powdered iron and powdered sulphur mixed together makes a mixture of iron and sulphur. They can be separated from each other without a chemical reaction.

Multiple choice evs look, learn and experience brief introduction to atoms of elements elements and atoms introduction of atom

Everything in the universe is made up of material called as _______.

  1. life

  2. water

  3. matter

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

Everything in this universe is made up of material which scientists have named "matter". 


It can be living or non-living. 

For example, human beings are matter as well as a duster is also a matter.

Hence the correct option is C.

Multiple choice evs look, learn and experience brief introduction to atoms of elements elements and atoms introduction of atom

Which of the following is not matter?

  1. Oxygen

  2. Microwaves

  3. Water

  4. All of above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Matter is something that occupies space and has volume.
Microwaves are a form of electromagnetic radiation with wavelengths ranging from one meter to one millimeter. 

It does not have mass and volume. It is neither a solid, liquid or gas. Hence, microwave cannot be considered as matter.
Hence, the correct option is $B$.

Multiple choice evs look, learn and experience brief introduction to atoms of elements elements and atoms introduction of atom

Change of state is also called as _____________.

  1. phase change

  2. mass change

  3. volume change

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

Matter can move from one state to another, but can still be the same substance. A change of state, also called a phase change, is a physical change from one state of matter to another, 

for example, from solid to liquid or from liquid to gas.

Multiple choice evs look, learn and experience brief introduction to atoms of elements elements and atoms introduction of atom

The state or phase of a given set of matter can change depending on _____________.

  1. temperature

  2. pressure

  3. Both a and b

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

The state or phase of a given set of matter can change depending on pressure and temperature conditions, transitioning to other phases as these conditions change to favor their existence; for example, solid transitions to liquid with an increase in temperature. Near absolute zero, a substance exists as a solid.

Multiple choice botany breath and blood of life stomata and transpiration transport in organisms long distance transport of water different types of circulatory systems

Silicon emulsions are

  1. Antitranspirants

  2. Antirespirants

  3. Hormones

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

Antitranspirants are substances that are applied to the leaves to reduce transpiration. They are used on trees, cut flowers and shrubs. They reduces transpiration in fruit plants like apples, pears, orange, crop plants like cotton, tea, roses, tuber crops like potato, carrot and vegetable plants like chillies, tomato, cabbage. These are also used to protect plants from drying out too quickly. Various antitranspirants include abscisic acid (ABA), aspirin, silicon emulsions, plastics, waxes.

Thus, the correct answer is option A.

Multiple choice physics heat - measurement application of various thermometric scales different types of thermometers measuring temperature introduction to temperature

Water is better thermometric liquid

  1. True

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

The above statement is false.

Water can't be used as thermometric liquid as:
(i) It sticks to the glass
(ii) It is transparent, and hence difficult to read its level through 
(iii) It is volatile and hence vapors apply pressure on the surface thereby affecting reading
(iv) It is a poor conductor of heat.
(v) its expansion is not uniform.
(vi) It freezes at 0°C and boils at 100°C and hence range is not very wide.

Multiple choice chemistry substances in common use percent composition water of crystallisation percentage composition and empirical formula

The water of crystallisation is the fixed number of _________ molecules in one formula unit of salt.

  1. hydrogen

  2. water

  3. oxygen

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

Water of crystallisation are water molecules that form an essential part of the crystal structure of some compounds.

It is the fixed number of water molecules in one formula unit of salt.
For example Glauber's salt has 10 water of crystallisation and it's formula is $Na _2SO _4.10H _2O$.
Hence, the correct answer is option (B).