Q1: Explain corrosion with suitable example.
Q2: Write the chemical name and colour of rust during corrosion of Iron.
Q3: Why surface of Al becomes dull after corrosion & write name & formula of
corrosion products.
Q4: Write name of corrosion product of Ag & mention its colour.
Q5: Write chemical name, formula & colour of corrosion product of Cu.
Answers
Answer:
The leaves of certain plants exhibit droplets of water along their margins in the morning. This particularly happens in plants growing in warm humid conditions. A humid environment hampers transpiration while the roots continue to absorb water from the soil. This builds up a big hydrostatic pressure within the plant and “forces out” the excess water directly from the tips of veins in the leaf. Special pore-bearing structures called hydathodes are present on the margins of the leaf to allow this exudation.
Answer:
"The gradual eating up of metals by action of air, moisture or a chemical reaction (such as an acid) on their surface is called corrosion. The most commonly seen example of corrosion of metals is rusting of iron i.e the formation of a brown flaky substance on iron objects on exposure to moist air."