General Knowledge - 5 May 20

Ø    Change of Qibla was ordered in 2 Hijrah.
Ø    Four Kings accepted Islam when holy prophet sent them letters.
Ø    There were 360 Idols in Kaba before Islam
Ø    The largest idol named in kaaba was Habal.
Ø    Bilal called first aazan of Fajar prayer.
Ø    The grave of the Prophet was prepared by Hazrat Abu Talha.
Ø    First Muslim University was established at At Masjid-e - Nabvi
Ø    The flag colour of the Holy Prophet was white and yellow at the time of conquest of Makkah.
Ø    Shab-e-Barat is celebrated on the 15 night of Shaaban.
Ø    Khadija died at 65 years age.
Ø    Alexander Graham Bell invented the telephone.
Ø    George Stephenson invented the railway engine.
Ø    Heinrich Hertz invented Radar.
Ø    Albert Sabin invented polio vaccine (oral).
Ø    Edward Jenner developed the small pox vaccination.
Ø    Helium was to be discovered first in the chromosphere of the sun.
Ø    Jacques Cousteau, the famous scientist and inventor participated in the invention of the Aqua-Lung.
Ø    Vulcanised rubber was invented by Charles Goodyear
Ø    The system for writing by blind people was invented by Louis Braille
Ø    The steam engine was invented by James Watt
Ø    The revolver was invented by Samuel Colt.
Ø    The nuclear reactor was invented by Enrico Fermi.
Ø    The laws of floating bodies was discovered by Archimedes.
Ø    The four blood groups were discovered by Karl Landsteiner
Ø    The existence of isotopes was discovered by Frederick Soddy.
Ø    The electro-cardiograph was invented by Willem Einthoven.
Ø    Stethoscope was invented by Rene Laennec.
Ø    Spinning frame was invented by Richard Arkwright.
Ø    Sodium was discovered by Humphry Davy.
Ø    Safety matches was invented by Johan Edvard Lundstrom
Ø    Rayon was invented by Georges Audemars.
Ø    Radium was discovered by Marie and Pierrie Curie.
Ø    Radioactivity was discovered by Henri Becquerel.
Ø    Nylon was invented by Wallace Carothers.
Ø    Microscope was invented by Zacharias Janssen.

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