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.