English

Fill in the Blanks with the Correct Words of the Statement Given Below: During Sublimation, a Solid on Heating Turns Directly into _________ and on Cooling Back to __________. - Chemistry

Advertisements
Advertisements

Question

Fill in the blanks with the correct words of the statement given below:

During sublimation, a solid on heating turns directly into _________ and on cooling back to __________.

Fill in the Blanks

Solution

During sublimation, a solid on heating turns directly into vapour and on cooling back to solid.

shaalaa.com
  Is there an error in this question or solution?
Chapter 2: Physical and Chemical Changes - Objective Type Questions

APPEARS IN

Viraf J. Dalal New Simplified Middle School Chemistry [English] Class 7
Chapter 2 Physical and Chemical Changes
Objective Type Questions | Q 4.3

RELATED QUESTIONS

What is the physical state of water at 100°C.


Convert the following temperature to the Kelvin scale.

25°C


Dissolving salt in water is a reversible change.


Does the substance absorb or liberate any heat energy during the change of phase?


The boiling point of water is 100° C. Express this in SI units (Kelvin scale).


Convert the temperature of 373° C to the Kelvin scale.


What is the (a) common unit of temperature, and (b) SI unit of temperature ?


What should be added to a Celsius scale reading so as to obtain the corresponding Kelvin scale reading ?


Fill in the following blank with suitable words :

Gases can be liquefied by applying ....................... and lowering .....................


How does applying pressure (or compression) help in the liquefaction of a gas ?


Define the term 'latent heat of fusion' of a solid. How much is the latent heat of fusion of ice ?


Draw a labelled diagram of the experimental set-up to demonstrate the sublimation of ammonium chloride.


Which of the following factors are responsible for the change in state of solid carbon dioxide when kept exposed to air ?

  1. increase in pressure
  2. ncrease in temperature
  3. decrease in pressure
  4. decrease in temperature

Give reasons:

 How is interconversion of states of matter different from chemical reaction?


The state of matter which has no definite shape or volume is called


Explain the term melting


In the paragraph below, write ‘solid’, ‘liquid’ or ‘gas’ in each of the brackets depending on the substance referred to just before.

On a bright sunny day, Riya and Gargi are playing with a ball ( ) in the park. Gargi feels thirsty. So, Riya brings tender coconut water ( ) for her. At the same time, a strong breeze ( ) starts blowing and it also begins to rain ( ). They run back into the house ( ), change their clothes ( ), and then their mother gives them a cup ( ) of hot milk ( ) to drink.


Write the properties of this substance.

Water


With reference to the liquid state of matter – answer the following

At what point will the particles become free and escape as a gas.


Give the reason for the following 

Solids cannot be compressed, but gases are highly compressible.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×