physical properties of metals and nonmetals

Which of the following is used for decorating sweets?

• Platinum

• Aluminium

• Gold

• Silver

All metals are solid except

• bromine

• mercury

• sodium

• potassium

Choose the correct set of non-metals.

• Carbon, Magnesium

• Calcium, Nitrogen

• Oxygen, Nitrogen

• Phosphorus, Copper

Non-metals are not lustrous. Which non-metal is an exception to this property?

• Chlorine

• Nitrogen

• Silicon

• Iodine

Which non-metal is a good conductor of electricity ?

• Phosphorus

• Sulphur

• Graphite

• Coal

Metals can be easily shaped into wires. This property of metals is called

• malleability

• conductivity

• ductility

• productivity

The most reactive metal is:

• Iron

• Gold

• Zinc

• Potassium.

The metal which can be cut with a knife

• Sodium and potassium

• Barium and calcium

• Sodium and mercury

• Potassium and calcium.

Which of the following statement is false?

• Metals are good conductor of heat and electricity

• Non-metals are non-sonorous.

• Non-metals are malleable

• Metals are lustrous

Non metal which is very hard

• diamond

• iodine

• graphite

• sulphur