General Science

Q1701.The main constituents of pearl are

Q1702.Long radio waves are reflected by which of the following layer of Earth’s surface?

Q1703.Cycle and cars used ball bearing, because

Q1704.Pearl is mainly constituted of

Q1705.Wireless communication is reflected back to the Earth’s surface by the

Q1706.Which industry is primary user of Magnetic Ink Character Recognition (MICR)?

Q1707.What are Rubies and Sapphires chemically known as?

Q1708.Cosmic rays

Q1709.Which type of computers are the most widely used?

Q1710.These days yellow lamps are frequently used as street light. Which one of the following is used in these lamps?

Q1711.Which one of the following statements is not true about cosmic rays?

Q1712.Which type of computer could be found in a digital watch?

Q1713.Sodium Vapour Lamp is usually used as street light, because

Q1714.What is the distance between two successive crests or successive troughs called?

Q1715.Which of the following laser ray is used in laser printers?

Q1716.The most commonly used substance in fluorescent tubes are

Q1717.Which one of the following is used for determining the structure of crystal?

Q1718.Which printer is usually used for desktop printing?

Q1719.Which one of the following metals is accessed in the native state?

Q1720.Which of the following is a mechanical wave?