Galvanization

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1. Bakelite is a copolymer of Phenol and
(a) Formaldehyde
(b) Acetaldehyde
(c) Benzaldehyde
(d) Cinnaldehyde

Ans.(a)

2. The process of covering water pipes made of Iron with Zinc layer to prevent corrosion is called:
(a) Zinc plating
(b) Alloy formation
(c) Vulcanization
(d) Galvanization

Ans.(d)

3. The element used for making solar cells is
(a) Magnesium
(b) Sodium
(c) Calcium
(d) Silicon

Ans.(d)

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