At higher altitudes, pressure cooker is used for cooking. Give reason.

Vapour pressure is an important property of liquids. pressure cooker is used for cooking food at higher altitudes. Give reason.

Vapour pressure is an important property of liquids . Pressure cooker is used for cooking food at higher altitudes. Give reason.

Pressure cooker reduce-cooking time. Why?

Cockroach is uricotelic animal. Give reason.

Sheela observed that after buying a pressure cooker, the cooking time is very much reduced. She asked the teacher about it. Then, what explaination should the teacher give?

Natural fibres and synthetic fibres are used in the field of textile manufacturing. Which of these clothes is most suited for the following situations? Give reason. i. While cooking in the kitchen ii. To wear during summer

Alum is used for cleaning muddy water. Give the reason?