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Class 11
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Purification of Impure Samples by Crystallization
Purification of Impure Samples by Crystallization
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1)
What is the most important characteristic of a crystal?
Isotropic nature
Irregular structure
Colour
Geometry and shape
2)
What is the formula of Blue vitriol?
Fe₂(SO₄)₃
CuSO₄.5H₂O
FeSO₄.7H₂O
CuSO₄
3)
What is green vitriol?
Hydrated ferrous sulphate
Aluminium sulphate
Ferric sulphate
Hydrated copper sulphate
4)
What is the crystal structure of blue vitriol?
Triclinic
Cubic
Octahedral
Monoclinic
5)
What is the chemical formula of potash alum?
FeSO₄.(NH₄)₂SO₄.6H₂O
(NH₄)₂SO₄.Fe₂(SO₄)₃.24H₂O
K₂SO₄.Al₂(SO₄)₃.24H₂O
Na₂SO₄.Al₂(SO₄)₃.24H₂O
6)
What is the shape of potash alum?
Square planar
Octahedral
Cubic
Tetrahedral
7)
What is the colour of crystals of potash alum?
Green
Blue
Yellow
Colourless
8)
What is the process by which the crystals are formed by the slow cooling of a hot saturated solution?
Sublimation
Crystallization
Distillation
Chromatography
9)
What is an example of crystalline solid?
Glass
Plastic
Fused silica
Quartz
10)
Which one of the following is the structure of benzoic acid?
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Cite this Simulator:
amrita.olabs.edu.in,. (2013). Purification of Impure Samples by Crystallization. Retrieved 30 October 2020, from amrita.olabs.edu.in/?sub=73&brch=7&sim=110&cnt=296
