A mother of one year old daughter wanted to space her second child. Her doctor suggested CU-T. Explain its contraceptive actions.

Sanya has a piece of land which is in the shape of a rhombus (See Fig. ). She wants her one daughter and one son to work on the land and produce different crops to suffice the needs of their family. She divided the land in two parts by joining its opposite comers. If the perimeter of the land is 400 m and one of the diagonals is 160 m, how much area each of them will get to work on.

D.D.T. is one of the most powerful insecticide which is effective against the mosquitoes that spread malaria. Mukesh’s mother wanted to buy D.D.T. from the market to use at night to protect her family from mosquitoes. But Mukesh stopped his mother from purchasing D.D.T. What values are attached to suggestion of Mukesh ?

Sangeeta's gardner was suffereing from high blood pressure but he was not caring for his health. One day Sangeeta took him to the doctor. The doctor advised him to take less quantity of salt in his diet. Sangeeta suggested gardner's wife to cook food for her husband with very little salt. Answer the following questions: Why did the doctor advise Sangeeta's gardner to take less quantity of salt?

Sanya has a piece of land which is in the shape of a rhombus (See Fig. ). She wants her four children to work on the land and produce different crops to suffice the needs of their family. She divided the land in four parts by joining its opposite comers. If the perimeter of the land is 400 m and one of the diagonals is 160 m, how much area each child will get to work on.

One day Reeta went to a jeweller 's shop with her mother. Her mother gave old gold jewellery to the goldsmith to polish . Next day when they brought the jewellery back, they found that there was a slight loss in its weight. Can you suggest reason for the loss in weight?