Why are gases easily compressible whereas solids are incompressible?

Hold a ‘smiley ball’ and squeeze it. Can you compress it? Justify your answer?

Which of the following are pure substances? Ice, Milk, Iron, Hydrochloric acid, Mercury, Brick and Water.

Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound?

What is an adsorbate and adsorbent?

What is meant by Rf value?

Differentiate between filtrate and distillate

Name the apparatus that you will use to separate the components of mixtures containing two,
i. miscible liquids
ii. immiscible liquids

How will you separate a mixture containing saw dust, naphthalene and iron filings?

Write the applications of fractional distillation.