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WorksheetsChemistry
Total questions: 20
Worksheet time: 11mins
Air is a ________
Homogeneous mixture
Compound
Heterogeneous mixture
Pure substance
A mixture of sand and iron fillings is best separated by __________
sedimentation
Winnowing
Magnetic separation
Hand picking
A mixture of chalk and common salt in water can be separated by __________
sedimentation
Filtration
Sedimentation and filtration
Sedimentation and evaporation
A mixture of chalk and common salt in water can be separated by __________
sedimentation
Filtration
Sedimentation and filtration
Sedimentation and evaporation
The solubility of most solid substances increases with increase in ___________
Mass
Matter
Temperature
Volume
Oil and water can be separated by __________
Filter paper
Distillation
Evaporation
A separating funnel
Compounds like sugar and salt are mixtures?
True
False
A mixture can have only solids or liquids?
True
False
The substance that dissolves in a liquid is called the solvent
True
False
Filtration is used to remove seeds from fruit juice
True
False
Seawater can be converted to drinking water by ___________
Evaporation
Filtration
Sedimentation
Filtration and Sedimentation
(a) is a method of separating the grain from the stalk
The rearing of silkworms for the production of silk is called (a)
(a) fibers are made- from human made materials
We get jute fibers from the ______ of the jute plant
Flowers
Roots
Stem
Bark
Which of these traps most of the air?
Nylon
cotton
Jute
Wool
The seeds are removed from cotton fiber by _________
Ginning
Weaving
Spinning
Sheering
Which of these is not a fiber?
Leather
Cotton
Nylon
Jute
A new substance is formed in a (a) change
A pure substance is a substance _______________
That consists Of only elements
That is safe to eat
That has only One kind of material
That is made up only of atoms
