$CATEGORY: MathsDemo/1.Number system/1.Number system--Real Numbers and their Decimal Expansions

//Multiple Choice

The water vapor is the ________ of the matter.
{
~Liquid state
=Gaseous state
~Solid state
~Plasma state
}

Who among the following is used in measuring the temperature?
{
~Ruler
~Thermostat
~Hygrometer
=Thermometer
}

What does the melting point of a solid indicate?
{
=Strength of attraction force between its particles
~Amount of heat needed to melt
~Strength of repulsive force between its particles
~Temperature at which it melts
}

What does the word "Latent" mean?
{
~Unseen
=Hidden
~Temporary
~Dormant
}

The vapor particles absorb excess amount of heat in the form of:
{
~Specific heat
~Latent heat of fusion
=Latent heat of vaporization
~Sensible heat
}

At which temperature does the ice start melting?
{
~1°C
~100°C
=0°C
~-10°C
}

What happens to the gas volume when pressure increases?
{
~Increases
=Decreases
~Remains constant
~Changes in an unexpected manner
}

Which of the following is true in concern with solids under pressure?
{
~They expand significantly
=They are incompressible
~They change shape readily
~They compress easily
}

The process of liquid turning into gas is known as:
{
~Freezing
~Melting
~Sublimation
=Evaporation
}

Which among the following has the maximum rate of evaporation?
{
~A drop of water
~A glass of water
~A beaker with water
=A plate with water
}

//True or False

Ice is a solid state of water.{T}

A clinical thermometer can be used in the labs.{F}

The melting point of a substance is directly proportional to the strength of the attractive forces between its particles.{T}

The conversion of a solid state into a liquid state is also known as “fusion”.{T}

The boiling point of water is 100°C.{T}

The movement of particles in a substance slows down during the transition from a liquid to a vapor state.{F}

All matter changes from solid to liquid and liquid to gas in the same order.{F}

An increase in surface area reduces the rate of evaporation.{F}

The heat supplied to matter overcomes the attractive forces between its particles.{T}

The rate of evaporation is directly proportional to the humidity.{F}

Ammonium chloride can bypass the liquid stage.{T}

The water can show sublimation.{T}

On increasing the pressure the particles of matter come closer.{T}

The sublimation can occur only at high temperatures.{F}

//Match the Following

Match the following items from Column A with their correct corresponding options from Column B:
{
=Freezing -> Liquid into solid
=Condensation -> Gas into liquid
=Sublimation -> Solid into gas
=Evaporation -> Liquid into vapor
}

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