Tag: evs - i

Questions Related to evs - i

A shining metallic ball with a small black spot on its surface is heated to very high temperature and then quickly taken to a dark room. Then.

  1. Both appear equally bright

  2. The spot appears brighter than the ball

  3. The spot appears darker than the ball

  4. Both are invisible in the dark room


Correct Option: B

Which of the following gas is used in vehicles?

  1. L.P.G

  2. C.N.G

  3. Nitrogen

  4. Nitrogen dioxide


Correct Option: B
Explanation:

Compressed natural gas is used in vehicles and is a cheap source of fuel.

The kinetic energy of particles is maximum in __________.

  1. gas

  2. liquid

  3. solid

  4. Same in all the states


Correct Option: A
Explanation:

The kinetic energy of particles is maximum in gas as the particles are free to roam with maximum speed as there is negligible force of attraction between the particle.


Hence the option A is correct.

The gas which is used for cooking at our home is _____________.

  1. Oxygen

  2. Nitrogen

  3. L.P.G ( liquefied petroleum gas ) 

  4. C.N.G ( compressed natural gas )


Correct Option: C
Explanation:

Liquefied petroleum gas is used for cooking food at the homes.


Hence the option C is correct.

Thermal conduction takes place in ___________.

  1. solid, liquid

  2. liquid, gas

  3. gas, solid

  4. solid, liquid, gas


Correct Option: D
Explanation:

Thermal conduction takes place in all the states of matter as the energy is transferred through particles so transfer of heat takes place.

The three phases of water (Solid, Liquid, Gas) are:

  1. ice, water, steam

  2. water, ice, steam

  3. steam, ice, water

  4. steam, water, ice


Correct Option: A
Explanation:

The three phases of water are ice (present in solid state),  water (present in liquid state) and steam (present in the gaseous state).

Which among the following is solid at room temperature?

  1. Oxygen

  2. Mercury

  3. Potassium permanganate

  4. Nitrogen


Correct Option: C
Explanation:

Oxygen and nitrogen are gases, bromine is liquid at room temperature. So $KMnO _4$ is solid at room temperature.

Particles move randomly in _____________.

  1. nitrogen

  2. sugar

  3. ice

  4. water


Correct Option: A
Explanation:

Particles move randomly in a gaseous state. Here nitrogen is the only substance which is in a gaseous state.

Which of the following has the highest density?

  1. Kerosene

  2. Water

  3. Iron

  4. Wood


Correct Option: C
Explanation:

Iron has the highest density as the particles are closely packed and volume occupied is less which makes the density very high.

Arrange the following objects in the order of the intermolecular force of attraction.


( Oxygen, Sugar, Water )

  1. Oxygen > Water > Sugar

  2. Sugar > Water > Oxygen

  3. Water > Sugar > Oxygen

  4. None of the above


Correct Option: B
Explanation:

The general order of force of attraction is Solid > Liquid > Gas. 


Therefore, the order is Sugar > Water > Oxygen.