In gun metal percentage of Zn is ____.

Zn replaces Cu from CuSo_(4) solution because the satandard reduction potential of Zn is ______than that of Cu.

An oxide ore of Zn is-

A gun is sold at a profit of 25% . If the sale price is doubled, find the percentage of profit.

A sulphate of a metal is isomorphous with ZnSO_(4)*7H_(2)O . In this salt, the percentage of the metal is 9.75. what is the atomic mass of the metal?

A metallic wire is stretched to increase its length by 20% .What will be the percentage change of its resistance?

A metal oxide has empirical formula M_(0.96)O_(1.00) What will be the percentage of M^(2+) ion in the crystal ?

Vapour density of a metal chloride is 54 . Metal content of the compound is 34.32 % . Calculate the atomic weight of the metal .

In the crystal structure of metallic Zn, the layers of Zn atoms have stacking sequence ABABAB… . What type of close-packed structure is formed in the crystal of Zn? How many Zn atoms are there in the unit cell of Zn crystal?