Science & Technology

16. What frequency range is the High Frequency band? A.     100 kHz B.     1 GHz C.     30 […]

11. Who is largely responsible for breaking the German Enigma codes, created a test that provided a foundation for artificial

11. Who is largely responsible for breaking the German Enigma codes, created a test that provided a foundation for artificial

1. In which decade was the American Institute of Electrical Engineers (AIEE) founded? A.     1850s    B.     1880s C.

6. In which decade was the SPICE simulator introduced? A. 1950s B. 1960s C. 1970s D. 1980s Answer & Explanation

1. In which decade was the American Institute of Electrical Engineers (AIEE) founded? A.     1850s    B.     1880s C.

61. Which of the following metals remain in liquid for under normal conditions? A.     Radium    B.     Zinc C.

56. Water is a good solvent of ionic salts because A.     it has a high specific heat B.   

51. Production of chlorofluorocarbons (CFC) gas which is proposed to be banned in India, is used in which of the

41. What is laughing gas? A.     Nitrous Oxide B.     Carbon monoxide C.     Sulphur dioxide D.     Hydrogen

46. In fireworks, the green flame is produced because of A. sodium B. barium C. mercury D. potassium Answer &

41. What is laughing gas? A.     Nitrous Oxide B.     Carbon monoxide C.     Sulphur dioxide D.     Hydrogen

31. Potassium nitrate is used in A.     medicine    B.     fertiliser C.     salt    D.     glass Answer &

36. Which of the following was to be discovered first in the chromospheres of the sun? A. Krypton B. Xenon

31. Potassium nitrate is used in A.     medicine    B.     fertiliser C.     salt    D.     glass Answer &

26. The chemical (ethyl mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the

16. The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is

21. When an iron nail gets rusted, iron oxide is formed A. without any change in the weight of the

16. The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is

11. Bromine is a A.     black solid B.     red liquid C.     colourless gas D.     highly inflammable

1. Brass gets discoloured in air because of the presence of which of the following gases in air? A.   

6. Chemical formula for water is A. NaAlO2 B. H2O C. Al2O3 D. CaSiO3 Answer & Explanation Answer: Option B

1. Brass gets discoloured in air because of the presence of which of the following gases in air? A.   

46. What does SSL stand for? A.     Secure Socket Layer B.     System Socket Layer C.     Superuser System

41. The first graphical browser for the WWW was named: A.     Netscape    B.     Veronica C.     Mosaic    D.