The process of depositing a layer of any desired metal on another material by means of electricity is called ___________.
1). Electroplating
2). Galvanisation
3). Rusting
4). Crystallisation
1. Rise of oil a wick is due to
2. The illuminating powers of two sources are compared by
3. Which layer of the earth's atmosphere reflect back the radio waves to the earth's surface ?
4. Among the following materials sound travels fastest in
6. The velocity of heat radiation in vacuum is
7. The audio signals of TV are
8. Which of the following is false with reference to a photo-voltaic cell?
9. The GPS device in an automobile uses which communication channel?