A brass plate (5 cm `xx` 4 cm ) is to be plated on both sides with a coating of thickness `0.25` mm . Calculate the strength of current so that work may be completed in 5 h . Electrochemical equivalent of silver is `0.00112 g C^(-1)` and density of silver = `10.5 g cm^(-3)`,

A spoon having 10cm ^(2) area is to be electroplated with silver .Calcalate the thick - ness of silver coating when a currect of 0.12 A is passed for 48 h through the electrolye .Electrochmical equivlent of silver is 0.001118 gC^(-1) and density is 10.5 gcm^(-3)

An electroplating unit plates 3.0 g of silver on a brass plate in 3.0 minutes. Find the current used by the unit. The electrochemical equivalent of silver is 1.12 xx 10^(-6) kg C^(-1) .

How long would it would it take a currect of 1.2 A to deosit a layer of coppcr 0.10 mm thick on both sides of a brass rectangular plate 10cmxx15cm ? Electrochmical equiva- lent of copper =0.00033 g c^(-1) density of copper =8.9 g cm^(-1)

A metal surface of surface area 250 cm^(2) is to coated onboth sides with copper by eletrolysis .How long will it take to deposit copper lauyer 0.01 cm in thick if a currect of 1.5 A is used ECE of copper =0.0003gC^(-1) and density of copper =9 g cm^(-3)

How many grams of silver could be plated out on a serving tray by the electrolysis of a solution containing silver in +1 oxidation state of a period of 8.0h at a current of 8.46A ? What is the area of the ray, if the thickness of the silver plating is 0.0254 cm ? The density of silver is 10.5 g cm^(-3) .

The frequency of the note emitted by a silver wire 1 mm in diameter and 50 cm in length is 256 Hz.Find the tension in the wire, if density of silver is 10.5 g cm^(-3) .

Mass of a wooden piece of length 20 cm breadth 10 cm and thickness 0.5 cm is 50g. What is the density of wood ?