Q. The vacuum flask is designed to keep liquids hot by minimizing heat loss in

View solution

Q. Where direct heating is involved, the utensils are usually made up of

View solution

Q. The dense feathers and a layer of fat under the skin allows the penguins to withstand temperatures below

View solution

Q. The heating coil of the electric kettle is always placed at the kettle's

View solution

Q. To help plants grow better by trapping heat in cold climates, we use

View solution

Q. Due to good insulator property, to cover ice blocks, we use

View solution

Q. The shiny surfaces are

View solution

Q. Double-glazed windows have air trapped between two panes of glass, which reduce

View solution

Q. Soldering iron rods are made of iron with the tip made of

View solution

Q. During boiling, temperature remains constant at the

View solution

Q. During condensation temperature remains constant at the

View solution

Q. The boiling point of mercury is

View solution

Q. The reverse process of boiling is termed as

View solution

Q. A typical graph of temperature against time is called the

View solution

Q. When a pure liquid is heated and it changes to vapor at a fixed temperature, the state is called

View solution

Q. The particular temperature at which the pure liquid is heated and it changes to vapor is known as

View solution

Q. The change of state from vapor to liquid when a substance is cooled at the same constant temperature as in boiling is known as

View solution

Q. In a meter rule, when the pivot is at the 50 cm mark, the ruler is

View solution

Q. The center of gravity of an object depends on the distribution of its

View solution

Q. If we place the pivot at a special position, its weight causes

View solution