Metals and non metals (Class 8)

What is the chemical nature of metal hydroxides?

• basic

• acidic

• neutral

• acidic and neutral

This picture illustrates copper's

• brittleness

• malleability

• ductility

• sonority

Which of the following is the only metal that exist as a liquid at room temperature?

• Gold (Au)

• Mercury (Hg)

• Titanium (Ti)

• sodium

Which of the following metals can zinc replace in a displacement reaction?

• magnesium

• sodium

• aluminum

• lead

A sample of gas was found to burn with a pop. Which of the following could have given this result?

• Carbon Dioxide

• Hydrogen

• Nitrogen

• Oxygen

Sodium metal is very reactive, hence it is stored in

• Water

• Oxygen

• Kerosene

• Base

Food cans are coated with tin and not with zinc because:

• Zinc is less reactive than tin.

• Zinc is more reactive than tin.

• Zinc has a higher melting point than tin.

• Zinc is costlier than tin.

Which of the following is not the property of metals or metal oxides

• Lustrous

• Ductility

• Acidic

• Sonorous

Which of the following can be beaten in to thin sheets?

• Zinc

• Phosphorous

• Sulphur

• Coal

The metal which can be cut with a knife

• Sodium and potassium

• Barium and calcium

• Sodium and mercury

• Potassium and calcium.