Galvanization is the process of coating iron with a thin layer of:
A. Zinc
B. Tin
C. Silver
D. Copper
Answer: Option A
Solution (By JKSSB Mock Tests)
Galvanization is the process of applying a protective zinc coating to iron or steel to prevent rusting. Zinc acts as a sacrificial anode, meaning it will oxidize preferentially to iron, protecting it even if the coating is scratched and the underlying iron is exposed to moisture.
Explanation:
Methanol is metabolized in the body to formaldehyde and formic acid, which are highly toxic and can damage the optic nerve, causing permanent blindness or even death if ingested in significant amounts. Ethanol is used as an antidote because it competitively inhibits methanol metabolism by alcohol dehydrogenase. Methanol is used as industrial solvent and in illegal liquor (hooch) sometimes resulting in mass poisoning.
Explanation:
In any electrochemical cell, the anode is defined as the electrode where oxidation (loss of electrons) takes place, and the cathode is where reduction (gain of electrons) occurs. In an electrolytic cell, the anode is positively charged, attracting anions which then lose electrons.
Explanation:
Both diamond and graphite are allotropes of carbon, having the same chemical element but different structural arrangements: diamond has a tetrahedral 3D network, graphite has layered planar structure. This leads to differing physical properties (hardness, conductivity).
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