metals and non metals properties

Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?

• (a) Sonorousness

• (b) Malleability

• (c) Ductility

• (d) Conductivity

Which of the following non-metal is lustrous?

• Sulphur

• Oxygen

• Nitrogen

• iodine

Metals above hydrogen in the activity series can displace ……… from dilute acids.

Galvanisation is a method of protecting iron from rusting by coating with a thin layer of

Which of the following is the correct arrange-ment of the given metals in ascending order of their reactivity? (Zinc, Iron, Magnesium, Sodium)

• Zinc > Iron > Magnesium > Sodium

• Sodium > Magnesium > Iron > Zinc

• Sodium > Zinc > Magnesium > Iron

• Sodium > Magnesium > Zinc > Iron

Non-metals form covalent chlorides because

• they can give electrons to chlorine

• they can share electrons with chlorine

• they can give electrons to chlorine atoms to form chloride ions

• they cannot share electrons with chlorine atoms

……… is an allotroph of carbon and is the hardest natural substance.

The highly reactive metals like Sodium, Potassium, Magnesium, etc. are extracted by the

• electrolysis of their molten chloride

• electrolysis of their molten oxides

• reduction by aluminium

• reduction by carbon

• none of these

The poorest conductor of heat among metals is

• Mercury

• Lead

• Sodium

• Copper

Which of the following oxide(s) of iron would be obtained on prolonged reaction of iron with steam?

• FeO

• Fe2O3

• Fe3O4