Download App

Is Matter Around Us Pure? — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceIs Matter Around Us Pure?2 Marks
Question
How will you distinguish a colloid from a solution?
✓

Answer

A true solution can be distinguished from a colloidal solution by experimenting Tyndall effect. A true solution does not scatter a beam of light passing through it but a colloidal solution scatters a beam of light passing through it.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the questions.[Che-2M]" from Is Matter Around Us Pure?→Is Matter Around Us Pure? — all question types→Science STD 9 question papers→CBSE Board STD 9 question papers→CBSE Board question paper generator→

Similar questions

State two characteristics of matter demonstrated by:
Diffusion.
→
Define ‘melting point’ of a substance? What is the melting point of ice?
→
Calculate the mole ratio of 240g calcium and 240g of magnesium.
(Ca = 40u; Mg = 24u)
→
Name any two monovalent cations, divalent cations and trivalent cations. Also name any one compound each one of them make.
→
9.72g of potassium chloride dissolves in 30g of water at 70°C. Calculate the solubility of potassium chloride at that temperature.
→
How many moles of calcium carbonate (CaCO3) are present in 10g of the substance?
(Ca = 40u; C = 12u; O = 16u)
→
Why does evaporation cool a liquid?
→
Why is it not possible to see an atom even with the most powerful microscope?
→
Define ‘formula unit’ of an ionic compound. What is the formula unit of:
  1. Sodium chloride
  2. Magnesium chloride?
→
How was it shown that an atom has a lot of empty space within it?
→