Question

Which of the following statements are true about the general properties of non -metals?

A. Non -Metal can be converted into thin sheets.

B. Usually non - metals are heat insulators.

C. Usually Non -Metals can be drawn in thin wires.

D. Non – metallic oxides are usually acidic. 

1. A, B, C
2. B, D
3. B, C, D
4. A, C

Answer 1

Correct Answer - Option 2 : B, D

Concept:

Physical Properties	Metals	Non - Metals
Electrical and heat Conductivity	Metals are good conductors of electricity and heat	Non -Metals are poor conductors of electricity and heat.
Sonorous	Metals are sonorous which means the ringing sound is produced when they are hit.	Non -metals are non-sonorous.
Malleability	Metals can be converted into thin sheets and hence are malleable.	Non - metals cannot be converted into thin sheets and hence are non Malleable.
Ductility	Metals can be drawn into thin wires.	Non -metals cannot be drawn into thin wires and hence are non - ductile.
High melting and Boling point	Metals have high melting and boiling point. They are usually solid at room temperature.	Non - metals are having a low melting points and boiling points. They can be solid, liquid, or gas at room temperature.

 

• Oxides of metals are basic while oxides of non - metal are acidic in nature. 

Conclusion:

• So, Non - metals cannot be converted into thin wires or thin sheets.
• Non - metallic oxides are acidic. 

So, the correct statements are B, D