Introduction to Chemistry

Which method of seperation is solid solid mixture ?

• Sublimation

• Sedimentation

• Handpicking

What is handpicking method ?

• Undesirable substance from large amount of substance

• Undesirable substance from small amount of substance

What is fitted into a mesh in a sieve ?

• Iron

• Frame

• Compound

What are magnetic substances ?

• Iron

• Copper

• Cobalt

• Platinum

Can we seperate iron and nickle mixture from a magnet ?

• Yes

• No

What sublime on heating ?

• Sublimable substance

• Sublimable vapous

What is winnowing ?

• To separate husk from grains with the help of wind

• To separate mud from stone with the help of wind

• To seperate husk from grains with the help of the machine

What is sedimentation?

• The process of floating away the light insoluble impurities in a liquid

• The process of settling down of heavy solids at the bottom of the liquid

What are the leftover particles known as in filtration process ?

• Impurities

• Filtrate

• Residue

What rises in form of water vapour in salt solution ?

• Salt

• Water