Semiconductors having extra purity is widely used in the field of electronics and computers.Identify an element which is used in this field.

Semiconductors having extra purity is widely used in the field of electronics and computers.Write a method to purify semiconductors.

Which chromium compound is widely used in tanning of leather?

Use the periodic table to answer the.following questions? a. Identify an element with five electrons in the outer subshell. b. Identify an element that would tend to lose two electrons. c. Identify an element that would tend to gain two electrons. d. Identify group having metal, non-metal, liquid as well as gas at the room temperature.

Represent a uniform electric field using lines of force.

Natural fibres and synthetic fibres are used in the field of textile manufacturing. Compare their merits and demerits and tabulate.

Which instrument is used to test the purity of milk?