Combustion and corrosion

The substances which have very low ignition temperature will

• Catch fire easily

• Will not catch fire

• Catch fire after some time

• None of these

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Combustion is a

• Natural process

• Chemical process

• Physical process

• None of these processes

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

NGSS.MS-PS1-6

When a magnesium ribbon is burnt, it produces

• Magnesium hydroxide

• Magnesium oxide

• Magnesium chloride

• Magnesium sulphate

Which one of the following is combustible?

• Iron nail

• Glass

• Stone pieces

• Paper

What is corrosion?

• The release of oxygen
• Breakdown of a metal

Iron rusts in the presence of:

• Vacuum

• Moisture

• Oxygen

• Moisture and Oxygen

Galvanisation of iron and steel involves:

• Plating with a more reactive metal, like zinc, that forms a thin protective layer

• applying a layer of paint to protect the metal from rusting

• annealing the metal to make it stronger

• covering with a plastic layer to protect the metal from rusting

Is this an example of corrosion or combustion?

• corrosion

• combustion

What conditions are required for rusting?

• water only

• oxygen only

• water and oxygen

Which of the following pictures is not an example of a combustion reaction?

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