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Metal and Non Metal : Complete Set Question

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This set of questions contains all the possible concepts
which could be asked in the examination

Physical properties of metals and non metals

Q.1 (a) Name two solid metals and two non-metals along with their symbols?

(b) Name two metals which are found in nature in the free state.

(a) Solid metals :

(i) Gold (Au)

(ii) Silver (Ag)

Solid non-metals :

(i) Carbon (C)

(ii) Sulphur (S)

(b) Gold and silver

Q.2 Name a non – metal which is lustrous and a metal which is non– lustrous?

Iodine is a non-metal which is lustrous, lead is a metal which is non-lustrous.

Q.3 Metals generally occur in solid state. Name and write symbol of a metal that exists in liquid state at room temperature?

Metals are generally solid at room temperature with an exception of Mercury(Hg)  which is liquid. 

Q.4 Which of the following two metals will melt at body temperature (37 °C)
Gallium, Magnesium, Caesium and Aluminium?

Gallium and Caesium.

Q.5 Why school bells are made up of metals?

School bells are made up of metals because metals are sonorous.

Q.6 Why electrical wires are made up of copper?

Electrical wires are made up of Copper because it is a very good conductor of electricity.

Q.7 Define the term malleability and ductility?

Malleability : Property of a substance due to which it can be beaten into thin sheet. Metals are malleable while non-metals are not.

Ductility: Property of a substance by which it can be drawn into thin wires.Metals are ductile while non-metals are not.

Q.8 State any five differences between the physical properties of metals and non-metals?

• Conduction of electricity :  Metals are good conductors of electricity while non-metals are bad conductors of electricity with an exception of graphite (an allotrope of carbon).

• Appearance of surface : Metals, in their pure state, have a shining surface also called metallic-lustre. Non-metals are generally non-lustrous with an exception of iodine. Metals on reacting with gases in atmosphere lose its shiny appearance when kept in air for a long time.

• Hardness : Metals are generally hard with the exceptions of sodium and potassium that can be cut by knife.

• Melting and boiling points : Generally metals have melting and boiling points except for sodium, potassium, mercury, cesium and gallium.

 • State at room temperature : Metals are generally solid at room temperature with an exception of mercury which is liquid. Non-metals are present in all three states: solids, liquids and gaseous, at room temperature.

Q.9  Define the term sonority?

Sonority : Property of producing sound on striking a hard surface. Metals are sonorous while non-metals are not.

Q.10 A non metal X exists in two different from Y and Z. Y is the hardest natural substance, whereas Z is a good conductor of electricity. Identify X, Y and Z?         

‘X’ is carbon, ‘Y’ is diamond as it is the hardest natural substance and ‘Z’ is graphite as it is good conductor of electricity.

Q.11 Write down the exceptions in physical properties of metal and non-metal?

Exceptions in Physical Properties

(i) Graphite, a non-metal, is a good conductor of electricity.

(ii) Iodine is a lustrous non-metal.

(iii) Diamond, an allotrope of carbon, which is a non-metal is the hardest substance while sodium and potassium, being metals are soft enough to be cut by knife.

(iv) Mercury, which is a metal, is liquid at room temperature while rests are solids.

(v) Sodium, potassium, mercury, cesium and gallium are metals with low melting and boiling points.

(vi) Diamond is the non-metal with high melting and boiling point.

(vii) Sodium, potassium and lithium are metals with low density.


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