Chemistry Chapter 5 Short Questions For Class 11

Last Updated on June 10, 2026 by Ahsa.Pk

The most important chemistry chapter 5 short questions for class 11. 1st Year Chapter 5 of Chemistry is related to atomic structure. These questions are for the Punjab Textbook Board and can be used within all of Punjab where this syllabus is taught.

Students are advised to prepare these questions in order to perform the best in the board examination.

Chemistry Chapter 5 Short Questions for Class 11

Explain, at a molecular level, why evaporation leads to a cooling effect.
Explain why liquids with stronger intermolecular forces tend to have lower rates of evaporation at a given temperature compared to liquids with weaker intermolecular forces.
One feels a sense of cooling under the fan after a bath. Explain.
How is a dynamic equilibrium established during evaporation of a liquid in a closed vessel at constant temperature?
The boiling point of water is different at Lahore and Murree Hills. Why?
Discuss two significant consequences of the lower density of ice compared to liquid water in natural environments.
Why boiling point of a liquid increase when the external pressure rises?
Mention four items in which liquid crystals are used.
How do you differentiate between crystalline solids and amorphous solids?
Propanone (CH₃COCH₃), propanol (CH₃CH₂CH₂OH), and butane (CH₃CH₂CH₂CH₃) have very similar relative molecular masses. List them in the expected order of increasing boiling points. Explain your answer.
Discuss how hydrogen bonding is responsible for the relatively high surface tension of water.
What type of intermolecular forces will dominate in the following liquids?
(i)NH₃ (ii) Ar (iii) CH₃COCH₃ (iv) CH₃OH
Write any four properties of gases.
Write any four properties of liquids.
Give two statements of Boyle’s Law.
State Charles’ law and write its mathematical form.
What is Avogadro’s law of gases? Give an example.
Derive molecular mass of a gas by general gas equation.
Show hydrogen bonding in alcohol and water.
What do you mean by liquid crystal? Write any two uses of it.
Why ice occupies more volume than liquid water?
Evaporation takes place at all temperatures. Justify.
Why are the vapour pressure of solids far less than those of liquids?
Define boiling point and molar heat of vapourization.
What are ionic solids? Give two examples.