MCQs On Corrosion
1. Which of the following methods is not used for the prevention of corrosion?
(a) greasing
(b) painting
(c) plating
(d) Heating
Answer:::: (d)
2. Widening of a river valley takes place due to
(a) corrosion
(b) lateral erosion
(c) corrasion
(d) hydraulic action
Answer:::: (b)
3. Elements which have properties of metals and non metals are
(a) amorphous
(b) crystalline
(c) metalloids
(d) metals
Answer:::: (c)
4. Corrosion can be prevented by
(a) alloying
(b) tinning
(c) galvanizing
(d) all of the above
Answer:::: (d)
5. Galvanic cells are also named as
(a) electrolytic cells
(b) battery cells
(c) daniel cells
(d) john cells
Answer:::: (a)
6. Voltaic cells generate electricity by
(a) spontaneous redox reaction
(b) non spontaneous redox reaction
(c) sublimation reaction
(d) thermochemical reaction
Answer:::: (a)
7. Galvanization is a method to
(a) protect the iron metal from corrosion
(b) extract iron from its ore
(c) protect food from rancidity
(d) improve the ductility property of the metal
Answer:::: (a)
8. Rusting of iron could take place in
(a) distilled water
(b) ordinary water
(c) distilled and ordinary water
(d) none of the above
Answer:::: (c)
9. Which of the following non-metals is liquid at the room temperature?
(a) iodine
(b) bromine
(c) carbon
(d) sulphur
Answer:::: (b)
10. During roasting which of the following poisonous gas is mainly produced
(a) CO
(b) CO2
(c) SO2
(d) N2O
Answer:::: (c)
