Materials: Metals and Non-metals True False

Materials: Metals and Non-metals True False

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Kerala PSC

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Metals can be distinguished from non-metals on the basis of their physical and chemical properties. - True

Lustre and hardness are chemical properties. - False

The property of metals by which metals can be beaten into thin sheets is called malleability. - True

The shape of the iron nail and the aluminium wire didn't changed on beating. - False

Coal and pencil lead show malleability property. - False

Wood and Plastic handle in frying pan cannot condcut heat. - True

The property of metal by which it can not be drawn into wires is called ductility. - False

Metals produce ringing sounds, they are said to be sonorous. - True

The materials other than metals are sonorous. - False

Some materials are hard, lustrous, malleable, ductile, sonorous and good conductors of heat and electricity. - True

Materials which are not hard, lustrous, malleable, ductile, sonorous and good conductors of heat and electricity are called metals. - False

Magnesium Oxide is basic in nature. - True

Iron oxide(Rust) is acidic in nature. - False

The chemical formula for Rust is:- Fe5O3 - False

The chemical formula for Magnesium Oxide is:- MgO - True

When copper reacts with oxygen and moist sir then it forms copper hydroxide (Cu(OH)2 ) and copper carbonate (CuCO3 ). - True

Sulphuric acid is the name of a acid formed from nitrogen when reacts with oxygen. - False

When sulphur dioxide is dissolved in water sulphurous acid is formed. - True

The sulphurous acid turns blue litmus paper red. - True

Oxides of non-metals are basic in nature. - False

Sodium metal is very reactive. - True

Sodium metal is stored in water. - False

Non-metal used in water purification process. - True