Reactivity series of metals

Why sodium is keep in the paraffin oil?

• To keep away from water

• To keep away from oxygen

• To keep away from animals

• To prevent rusting.

When the sodium is freshly cut, what are the characteristic of metal does it shows?

• Shiny

• Dull

• soft

• Electric conductor.

If you compared the magnesium, aluminium, zinc and the sodium, which shows the most reactive reaction?

• Aluminium

• Zinc

• Magnesium

• Sodium

Tags

NGSS.HS-PS1-2

If you compared the magnesium, copper, lead, iron and sodium, which shows least reactive reaction?

• Copper

• Lead

• Iron

• Sodium

1.       Choose reason why Lithium is more reactive than magnesium?

• Magnesium located on the higher position than lithium.

• Magnesium and Lithium are in similar Period.

• Lithium is in the 1^st group in Periodic Table.

• Magnesium and Lithium are in similar group.

Choose the colour of burning magnesium?

• white

• Bright white

• Green

• Maroon

What colour is lithium flame?

• Green

• Blue

• Lilac

• Carmine red

1.       Choose the colour of iron when reacted with oxygen?

• Red

• Green

• Blue

• Yellow

Choose the best answer of the following equation for zinc reaction with oxygen.

• Zinc + Oxygen --> Zinc Oxygen

• Zinc + Oxygen --> Zinc Oxide

• Zinc + Oxygen --> Zincoxide

• Zinc + Oxygen --> Zinc Oxide + Water

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Choose the best answer of the series of reactivity

• Mg, Zn, Fe, Al, Sn

• Al, Mg, Zn, Fe, Sn

• Mg, Al, Zn, Fe, Sn

• Al, Zn, Mg, Fe, Sn

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1