Download App

Is Matter Around Us Pure — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceIs Matter Around Us Pure1 Mark
Question
18 Which one amongst the following will show Tyndall effect? Common salt solution.
✓

Answer

$(b)$ milk and $(d)$ starch solution show Tyndall effect because they are colloidal solution. Whereas $(a)$ salt solution and $(c)$ copper sulphate solution are true solution. Their particle size is too small to scatter light. So they do not show Tyndall effect.

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 "Do as directed; [1 M ]" from Is Matter Around Us Pure→Is Matter Around Us Pure — all question types→Science STD 9 question papers→Gujarat Board STD 9 question papers→Gujarat Board question paper generator→

Similar questions

Which type of connective tissue is present in hump of camel and blubber of whale?
→

Why does a block of wood held under water rise to the surface when released?

→
Which is second largest phylum of Invertebrata.
→
When an incense stick (agarbatti) is lighted in one corner of a room, its fragrance spreads in the whole room quickly. Which characteristic of the particles of matter is illustrated by this observation?
→
What will be the momentum of a body of mass $‘m’$ which is moving with a velocity $'v'?$
→
Name two marine fishes of India.
→
Why do algae live in well lighted areas?
→
Which mode of nutrition is found in algae?
→
Why are lysosomes known as 'suicide-bags' of a cell?
→
Mixed cropping is done to reduce the _________ between component crops for _______, nutrients and water.
→