Chemistry - MOST IMPORTANT CAPF Previous Year Questions

temperature only

volume only

pressure only

temperature, volume and pressure

On increasing the temperature of solids, the kinetic energy of particles increases

The maximum temperature at which a solid melts to become a liquid at atmospheric pressure is called its melting point

Particles of steam have more energy than water at $\displaystyle 100$°C

Direct change of gas to solid is called deposition

water is difficult to handle

water at $\displaystyle 273$ K has less energy than ice at the same temperature

water at $\displaystyle 273$ K has more energy than ice at the same temperature

water is not a cooling agent

steam is in the gaseous state and water is in the liquid state

steam has an additional heat known as 'latent heat of vaporization'

water has hydrogen bonds but steam does not

transfer of heat from steam is easier than water

increases the boiling point of the liquid

lowers the boiling point of the liquid

does not affect the boiling point of the liquid

increases the time required for it to boil

Decreases, Decreases

Increases, Decreases

Increases, Increases

Decreases, Increases

The rate of evaporation depends on temperature

The rate of evaporation does not depend on surface area exposed to the atmosphere but on volume of the liquid

The rate of evaporation depends on humidity of the surroundings

The rate of evaporation depends on the wind speed

increases with increased temperature

decreases with increased temperature

decreases with decreased temperature

has no relation with increase or decrease of temperature

$\displaystyle 1$ and $\displaystyle 2$ only

$\displaystyle 3$ and $\displaystyle 4$ only

$\displaystyle 1$, $\displaystyle 2$ and $\displaystyle 3$

$\displaystyle 1$, $\displaystyle 3$ and $\displaystyle 4$

Melting of ice and burning of candle represent the same kind of chemical change

Melting of ice is a physical change and burning of candle is a chemical change

Melting of ice is a chemical change and burning of candle is a physical change

Melting of ice and burning of candle represent the same kind of physical change

Digestion of food

Corrosion or rusting of a metal

Production of hydrogen from an acid

Sublimation of iodine

Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I

Both Statement I and Statement II are true but Statement II is not the correct explanation of Statement I

Statement I is true but Statement II is false

Statement I is false but Statement II is true

Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I

Both Statement I and Statement II are true but Statement II is not the correct explanation of Statement I

Statement I is true but Statement II is false

Statement I is false but Statement II is true

Balloon A

Balloon B

Balloon C

Balloon D

lack of colour.

ability to flow.

inability to form free surfaces.

ability to exert a buoyant force.

Kinetic energy of gas must increase

The gas must undergo a change of state

The gas must undergo a chemical change

None of the above

Carbon dioxide

Hydrogen

Nitrogen

Oxygen

Fusion

Sublimation

Diffusion

Emulsion

It has a high specific heat

It has no colour

It has a high dipole moment

It has a high boiling point

Combustion of carbon

Mixing acid and alkali

Photosynthesis

Respiration