Question

give reasons- (a) immersion roads for heating are made up of metallic substances. (b) sodium and potassium are stored in kerosene (c) copper cannot displace zinc fromite salt solution.

Answer 1

a. immersion of roads are made up of mettalic substance because it contains metal in raw form such as iron one and bauxite because it is a good conductor of electricity
b. sodium and potassium are stored in kersoscene because these are very higly reactive metals
c. copper cannot displace zinc formite from salt solution because copper is less reactive metal than zinc. but zinc can displace zinc because it is highly reactive than copper

Answer 2

b) sodium and potassium are stored in kerosene because by coming in contact with oxygen the catch fire

c) copper cannot displace zinc because zinc is more reactive than copper

a) immersion roods are made up of metallic substance because metals are good conductor of heat