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WorksheetsIntroduction to Chemistry
Total questions: 12
Worksheet time: 7mins
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
How is the common salt obtained ?
From ocean water
From sea water
From river water
From lake water
What is the name of process in which we separate grains from stalk
Winnowing
Decantation
Threshing
Hand picking
