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Chemistry Class 12 Chapter 3
Group III & IV Elements
Test 10
1.
Special feature of borax glass is
For chemical garden
All of these
Heat resistance
Low melting point
2.
Which of the following is mono-basic?
Tetraboric acid
Pyroboric acid
Meta boric acid
Orthoboric acid
3.
Which element is not present is earth crust abundantly?
Sodium
Oxygen
Silicon
All of these
4.
The hardness of diamond is due to?
It is allotropic form of carbon
Valance shell electrons take part in bonding
It is giant molecule
5.
In the thermite process aluminum acts as?
An reducing agent
An oxidizing agent
A flux
Solder
6.
PbO is?
Basic
Amphoteric
Neutral
Acidic
7.
The process of aluminum extraction is?
Contact process
Hall process
Thermite process
Haber process
8.
Boron in soil is considered as?
Soil porocity
Alkaline of solution
All of these
Proper growth of plants
9.
Mineral of aluminum is?
Talc
Analcite
Emerald
Colemanite
10.
Methyl silicon is used for making?
Medicines
Tubes and sheets
Washing powder
Antifreezing agents
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