Position of hydrogen in reactivity series

The position of a metal in the reactivity series of metals depends on the reactivity of the metal when reacting with ....

• Carbon

• Hydrogen

• Oxygen

• Sulphur

Based on the following diagram, what is the function of potassium manganate (VII) crystals in this experiment?

• To supply oxygen

• To avoid the metals to mix with each other

• To release heat

• To give out water vapour

Based on the diagram, what is the function of anhydrous calcium chloride in the experiment?

• To absorb water vapour so that dry hydrogen will be produced

• To supply hydrogen gas

• To separate the metals

• To release heat for combustion

Hydrogen is more reactive than the following metals except .....

• Lead

• Copper

• Aluminium

• Mercury

What will happened when lead oxide react with hydrogen?

• Lead oxide burns brightly

• Yellow powder turns shiny grey

• Lead is produced

• All of the above

Choose the correct sequence.

.............. , ............ , .........

----------------------------------->

Reactivity towards oxygen increases

• Silver , Copper , Tin

• Iron , Lead , Mercury

• Magnesium , Aluminium , Calcium

• Iron , Carbon , Lead

The reactivity series of metals is applied in the ............. of the metals from their ore.

• Melting

• Extraction

• Freezing

• Crystalization

What are the two non-metals that are include in the reactivity series of metals?

• Hydrogen and iron

• Oxygen and lead

• Tin and carbon

• Carbon and hydrogen

Metal oxides that more reactive than carbon can be extracted through ......

• Electrolysis

• Fractional distillation

• Evaporation

• Photosynthesis

Reactivity of metal towards oxygen increases down the reactivity series of metal diagram

• True

• False