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Elements and atoms - class-XII

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In how many forms did the earlier Indian philosophers classify matter?

  1. 2

  2. 6

  3. 7

  4. 5


Correct Option: D
Explanation:

Early Indian philosophers classified matter in the form of five basic elements – the “Panch Tatva”– air, earth, fire, sky and water.

Sub atomic particles of atoms are:

  1. protons

  2. electrons

  3. neutrons

  4. all of these


Correct Option: D
Explanation:

Subatomic particles are particles that are smaller than the atom. Protons, neutrons, and electrons are the three main subatomic particles found in an atom.

A mixture is made from different substances that are ___________.

  1. not chemically joint

  2. chemically joint

  3. physically joint

  4. not physically joint


Correct Option: A
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.

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

  1. life

  2. water

  3. matter

  4. None of the above


Correct Option: C
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.

Which of the following cannot be considered as matter?

  1. Love

  2. Nitrogen

  3. Mixture

  4. Water


Correct Option: A
Explanation:

Love cannot be considered as matter as it does not have mass and volume.

Which of the following is the correct properties of matter?

  1. have no mass but occupies space

  2. have mass but occupies no space

  3. have no mass and occupies no space

  4. it have mass and occupies space


Correct Option: D
Explanation:

Matter is something that has mass and occupies space. 


It can be living or non-living. 

Hence the correct option is D.

Which of the following is not matter?

  1. Oxygen

  2. Microwaves

  3. Water

  4. All of above


Correct Option: B
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 $B$.

Change of state is also called as _____________.

  1. phase change

  2. mass change

  3. volume change

  4. particle change


Correct Option: A
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.

Why  helium is a matter?

  1. It has mass.

  2. It is a gas.

  3. It occupies space.

  4. All of above.


Correct Option: D
Explanation:

Matter is something that has mass and occupies space. Helium is an inert gas which has mass and volume. Hence, it can be considered as a matter.


Hence, the correct option is $D$.

Matter has both _________ and _________.

  1. mass, volume

  2. mass, weight

  3. life, particle

  4. None of the above


Correct Option: A
Explanation:

Matter is defined as something which has both mass and volume. 


It occupies space and can be felt.

Hence the correct option is A.

Matter consist of particles such as ____.

  1. ions

  2. molecules

  3. atoms

  4. All of the above


Correct Option: D
Explanation:

All materials are made up of matter, and matter consists of particles such as atoms, ions or molecules.

Chemically, matter can be classified as ___________.

  1. pure and impure substances

  2. elements, compounds and mixtures

  3. solids, liquids and gases

  4. metals and non-metals


Correct Option: A
Explanation:

Matter can be classified chemically as pure substance (elements and compounds) and mixture or impure substance.

On the basis of composition, which of the following is a type of matter?

  1. Compound

  2. Solid

  3. Liquid

  4. Both b and c


Correct Option: A
Explanation:

On the basis of composition, matter can be classified as compound, element and mixture. Solids, liquids and gases are physical states of matter.

Which of the following is a matter?

  1. Chair

  2. Smell

  3. Love

  4. Cold


Correct Option: A
Explanation:

Anything that occupies space and has mass is called as matter. Smell, love and cold does not occupy space and has no mass. Hence, they are not matter.

Which of the following are states of matter?

  1. solid

  2. liquid

  3. gases

  4. all of the above


Correct Option: D
Explanation:

There are three states of matter: Solid, liquid, gases.

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


Correct Option: C
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.

Identify which of the following has mass and takes up space is :

  1. energy

  2. work

  3. matter

  4. acceleration

  5. force


Correct Option: C
Explanation:

Anything that has mass and posses space is known as matter.


Hence the correct option is C.

More than one may be correct:
The number of g-atoms of nitrogen in its $7gm$ is equal to number of g-atoms in

  1. $6gm$ $Mg$

  2. $28gm$ $fe$

  3. $30gm$ $Ca$

  4. $20gm$ $Hg$


Correct Option: A

The matter can not be perceived through our senses.

  1. True

  2. False


Correct Option: B
Explanation:

The matter can be perceived through our senses. Example: water is matter and we can sense it by touching it and by seeing it.

Which of the following is not matter?

  1. Air

  2. Water

  3. Light

  4. Sofa


Correct Option: C

Which of the following changes increases the overall density of the object?

  1. A block of iron is formed into a hollow shape

  2. A submarine fills its ballast tanks with water

  3. A submarine fills its ballast tanks with air

  4. A fish increases the amount of gas in its swim bladder


Correct Option: B
Explanation:

When a low-density substance is replaced by high-density substance,the overall density increases.Here air which has low density compared to water is replaced.So,the overall density increases while in removing cases overall density decreases.


Option B is correct.

The spaces between molecules is least in :

  1. Solid

  2. Liquid

  3. Gases

  4. Vapour


Correct Option: A
Explanation:

In solid state the intermolecular forces are maximum and the molecules are very closely packed.

We have four substances P,Q,R,S. Substance P is dark coloured violet solid having diatomic molecules. Solution of P in alcohol is an Antiseptic 'T' Substance 'Q'is a white solid usually recovered from sea on a large scale. Substance 'R' is also a white solid insoluble in water and used in the form of small balls for safe storage of woolen clothes. Substance 'S' is a white solid too used in dry cell. P,Q,R,S,T, may be -(choose correct option)

  1. P-lodine, Q-Napthalene,R-$\displaystyle R-NH _{4}CI$ S-Nacl, T-lodine tincture

  2. P-NaCl,Q-Napthalene, $\displaystyle R-NH _{4}CI$

    S-lodine, T-lodine tincture

  3. P-lodine tincture, Q-$\displaystyle R-NH _{4}CI$ R- lodine, S-Napthalene, T-NaCl

  4. P-lodine, Q-Nacl, R- Napthalene,

    S-$\displaystyle R-NH _{4}CI$, T-lodine tincture


Correct Option: D
Explanation:

P = lodine $\displaystyle 1 _{2}$, dark coloured  violet solid Q = NaCl, recovered  from sea on large scale. R = Nephathalene, used in the from of small balls for safe storage of woolen clothes S = $\displaystyle NH _{4}Cl$, used in dry cells
T = TIncture iodine, a solution of iodine in alcohol as antiseptic 

Which of the following are the correct examples of matter?

  1. Glass bottle, water and noise.

  2. Air, wood and vacuum

  3. Silver foil, hot air and chalk.

  4. Sand, oxygen and light flash


Correct Option: C
Explanation:

Noise, vacuum and light flash are not the examples of matter.

Which of the following is a state of matter?

  1. Quark-gluon plasma

  2. Quantum spin liquid

  3. Superfluid

  4. All of above


Correct Option: D
Explanation:

There are more phases of matter which aren't as familiar nor do we see them every day. Some exist only in theory, others can be reproduced in laboratories, some are so new that scientists are still figuring out the details and others might exist, but have not yet been found in nature. They include: quark-gluon plasmas, Bose-Einstein condensates, fermionic condensates, strange matter, liquid crystals, quantum spin liquid (QSL), superfluids, supersolids and the paramagnetic and ferromagnetic phases of magnetic materials.

How many of the following is the matter?


Chair, Air, Heat, Smell, Sound, Almonds, Thought and Cold drink.

  1. $4$

  2. $5$

  3. $6$

  4. $7$


Correct Option: A
Explanation:

Chair, Air, Cold drink, Almonds are matters as they have mass and occupy space. 


Remaining all does not have mass and does not occupy space. 

Thus they are not a matter.

Hence the correct option is A.

 Which of the following can occupy space and has mass?

  1. Density

  2. Weight

  3. Matter

  4. A solid

  5. Volume


Correct Option: C
Explanation:

Matter is defined as anything that occupies space and has mass. Matter occurs in one of three states: Solid, liquid or gas. 


Hence the correct option is C.

Every matter can be seen.

  1. True

  2. False


Correct Option: B
Explanation:

Any material can be seen if the molecules are dense or large but if the molecules are scattered like in gaseous state one cannot see it so every matter can be seen is a false statement.

Which of the following statements is TRUE of matter?

  1. The states of matter are interconvertible

  2. Force of attraction varies from one kind of matter to another

  3. The states of matter can be changed by changing the temperature of pressure

  4. All of the above


Correct Option: D
Explanation:

Matter is a substance which has mass and takes up space by volume the properties of matter are,

States of matter (solid,liquid,gas)are inter convertable.
Force of attraction varies from one kind of matter to another.
States of matter can be varied by varying temperature and pressure.

Choose one of the following definitions that give the correct meaning of matter :

  1. anything that occupies space and has mass is known as matter.

  2. anything that has definite shape and volume is known as matter.

  3. anything that has mass but not definite shape is known as matter.

  4. anything that is intangible is known as matter.


Correct Option: A
Explanation:

There are many possible definitions of Matter. Matter is termed as any substance that has mass and occupy space.

Examples of matter- protons, atoms, molecules, compounds, pen, cap, ball, tree, cat, dog ,etc.
Examples that are not matter- light (photons), UV rays, heat, thought, infra-red waves, microwaves, emotions, etc.

What is the smallest constituent of matter that retains its chemical identity?

  1. Atom

  2. Molecule

  3. Ion

  4. Radical


Correct Option: A
Explanation:

Atom is the smallest unit of matter that still retains its chemical identity.Atoms can be broken down into electrons,neutrons and protons which can be further broken down into quarks.Atoms differ from each other with different chemical properties.

Nine planets revolve around the sun. The outer, distant planets are Jupiter, Saturn, Neptune, Uranus and Pluto. In comparison to these, the 'inner planets', Mercury, Venus, Earth and Mars that are nearer to the centre of the sun contain relatively:

  1. New elements of matter

  2. Lighter elements

  3. Heavier elements of matter

  4. Larger quantities of gas


Correct Option: C

As a balloon is filled with water,it expands and increases in weight,This shows that water:

  1. Has mass

  2. Occupies space

  3. Is a kind of matter

  4. All of these


Correct Option: D
Explanation:

The balloon expands shows that the water n the balloon is occupying the space and the increase in weight of the balloon proves that water has mass and Matter is anything that has mass and takes up space.

Matter can be defined as something that:

  1. Occupies space

  2. Has mass

  3. Exists in three states

  4. All of the above


Correct Option: D
Explanation:

Matter is defined as something  that which occupies space and possesses rest mass, especially as distinct from energy and exists in all the three states

The quantity of matter present in an object is called its ___________.

  1. weight

  2. volume

  3. mass

  4. density


Correct Option: C
Explanation:

Mass is the property of a physical body which determines the strength of its mutual gravitational attraction with other bodies. The unit of mass is kilogram.

 Matter is composed of:

  1. atoms

  2. molecules

  3. tiny particles

  4. all of the above


Correct Option: D
Explanation:

Matter is anything which have mass and occupy space. Substance and Mixture is the main part of the matter. Substance is the further classified in elements and compound, which is further categorized as atom and molecule. 

Hence, matter is composed of everything atoms, molecules, tiny particles etc.

Matter is defined as anything that ____________.

  1. occupies space and has mass

  2. has mass only

  3. occupies space only

  4. none of the above


Correct Option: A
Explanation:

Matter is a substance that has a mass and occupy space. Example: sofa, TV, water, air, etc.


Option A is correct.

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