Dioptre is a unit of measurement for __________ ?
A. Current B. Lens C. Force D. Focal Length
Transistor is a device that convert weak signal into__________?
A. small signal B. strong signal C. both D. none
Second name of ethyl alcohol is___________?
A. Ethene B. Ethanol C. Propyle D. none
Electromagnetisms is the branch of___________?
A. Chemistry B. Physics C. Both D. None of these
Which one of the following non-metals is not a poor conductor of electricity?
A. Sulphur B. Selenium C. Bromine D. Phosphorus
Which of the following is the world’s loudest bird?
A. White bellbird B. Peacock C. Piha D. None of the above
Which one of the following is not a radioactive element?
A. Cadmium B. Thorium C. Radium D. Uranium
Which of the following is used in beauty parlors for hair setting?
A. Silicon B. Chlorine C. Sulphur D. Phosphorus
Which of the following is not a chemical reaction?
A. Burning of coal B. Conversion of water into steam C. Digestion of food D. Burning of paper
Which of the following is commonly called a polyamide?
A. Rayon B. Nylon C. Terylene D. Orion