Home
About
FAQs
System Requirements
In the news
Workshops
Training
Training Calendar
Request for Training
Training Status
Registration
For Teachers
For Students
For Schools
Contact us
Login
Languages
English
हिंदी
മലയാളം
मराठी
ಕನ್ನಡ
you are here->
home
->
Class 11
->
Purification of Impure Samples by Crystallization
Purification of Impure Samples by Crystallization
Theory
Theory
Procedure
Animation
Simulator
Video
Viva Voce
Resources
Feedback
1)
What is the most important characteristic of a crystal?
Colour
Geometry and shape
Irregular structure
Isotropic nature
2)
What is the formula of Blue vitriol?
CuSO₄.5H₂O
CuSO₄
FeSO₄.7H₂O
Fe₂(SO₄)₃
3)
What is green vitriol?
Aluminium sulphate
Ferric sulphate
Hydrated copper sulphate
Hydrated ferrous sulphate
4)
What is the crystal structure of blue vitriol?
Triclinic
Monoclinic
Cubic
Octahedral
5)
What is the chemical formula of potash alum?
K₂SO₄.Al₂(SO₄)₃.24H₂O
(NH₄)₂SO₄.Fe₂(SO₄)₃.24H₂O
FeSO₄.(NH₄)₂SO₄.6H₂O
Na₂SO₄.Al₂(SO₄)₃.24H₂O
6)
What is the shape of potash alum?
Cubic
Tetrahedral
Octahedral
Square planar
7)
What is the colour of crystals of potash alum?
Blue
Green
Yellow
Colourless
8)
What is the process by which the crystals are formed by the slow cooling of a hot saturated solution?
Chromatography
Distillation
Crystallization
Sublimation
9)
What is an example of crystalline solid?
Fused silica
Plastic
Glass
Quartz
10)
Which one of the following is the structure of benzoic acid?