Manu and his father went to a shop to purchase a battery for their inverter. The shopkeeper showed them two types of batteries, one with lead plates and the other with cadmium plates. The battery with cadmium plates was more expensive than the lead battery. Manu's father wanted to purchase lead battery as it was cheaper.
After reading the above passage answer the following questions:
(a) As a student of chemistry, why would you suggest Manu's father buy the expensive cadmium plate battery. Give two reasons.
(b) What are the values associated with the above decision?

Manoj went with his father to buy hinges for the door. The shopkeeper showed two types of hinges: normal iron hinges and the galvanized hinges. The normal hinges were costlier. Manoj's father opted for the cheaper normal iron hinges. Manoj suggested his father to buy galvanized hinges through these were costlier.
(a) what are the rationale for Manoj to buy galvanized hinges?
(b) What values are attached with this decision?

Many food products are available in the market in tin cans. Jayant went to the market to buy tinned cans of a food product. The shopkeeper gave him a can which had scratches, though it had been recently packed. Jayant did not buy that can. How do you agree with Jayant's decision?