Zinc ia added to copper in the right proprotion for the manufacture of hardware and screws.

Zinc powdern is added to copper sulphate solution.

A factory manufactures two types of screws, A and B. Each type of screw requires the use of two machines, an automatic and a hand operated. It takes 4 minutes on the automatic and 6 minutes on hand operated machines to manufacture a package of screws A, while it takes 6 minutes on automatic and 3 minutes on the hand operated machines to manufacture a package of screws B. Each machine is available for at the most 4 hours on any day. The manufacturer can sell a package of screws A at a profit of 70 paise and screws B at a profit of Rs 1. Assuming that he can sell all the screws he manufactures, how many packages of each type should the factory owner produce in a day in order to maximise his profit? Formulate the above LPP and solve it graphically and determine the maximum profit.

Zinc powder is added to copper sulphate solution. Give balanced reaction.

An alloy of copper and zinc.

An alloy of copper and zinc.

When zinc granules are added to copper sulphate solution, the blue coloured solution-turns colourless. Give reason

An alloy is made of copper and zinc in the ratio 3:2. If the weight of zinc in the alloy is 20.4 g, what is the weight of copper in the alloy?