Advertisements
Advertisements
Question
Why does a lump of cotton wool shrink in water?
Advertisements
Solution
A lump of cotton wool shrinks when immersed in water. This is because air present in the cotton wool escapes. Thus, the volume of the cotton wool decreases.
RELATED QUESTIONS
Classify Carbon monoxide. Also give a balanced equation to prepare it.
Complete and balance the following equation
CaO + H2O →
Name the following:
The product formed when phosphorus burns in oxygen.
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
Carbon dioxide, water vapour and energy in the form of heat are evolved during respiration.
Why is air considered as a mixture?
Write the percentage of the gases present in air.
Nitrogen is essential for burning.
What is the presence of harmful substance in the air called?
______ is responsible for making clouds.
A gas that neither burns nor supports burning is ______.
