Explanation

Explanation

Big Ben is a clock at British parliament building.

Location: London, England

Architect: Augustus Pugin

Height: 96 m 

Explanation

Explanation

Euclid was an ancient Greek mathematician active as a geometer and logician.

He established the foundations of geometry that largely dominated the field until the early 19th century.

Died: Alexandria, Egypt

Explanation

Laser technology is used in compact disc

Compact Disc is an example of Optical Storage

James T. Russell invented C.D. (Compact Disc).

 co-developed by Philips and Sony to store and play digital audio recordings.

history

 In August 1982, the first compact disc was manufactured.

It was then released in October 1982 in Japan and branded as Digital Audio Compact Disc.

It was released on March 2, 1983, in North America and Europe.

FIA CBT VU PAPER 22-12-2021

ND30-4-2023

Explanation

Sahih Muslim, together with Sahih al-Bukhari is termed as Sahihayn.

Explanation

Explanation

Explanation

Vinton Gray Cerf, born on June 23, 1943.

He is an American Internet pioneer known as the "Father of the Internet."

In 1997, President Bill Clinton awarded him the U.S. National Medal of Technology.

Explanation

Hazrat Bilal called the first Azan of  Fajar prayer

First Azan was called out in 1 A.H

Bilal ibn Rabah is considered to have been the first muezzin, chosen by Hazrat Muhammad himself.

The Title of Bilal ibn Rabah: Sayyid al-Muʾaḏḏin

Bilal ibn Rabah Born: 580 AD, Mecca, Saudi Arabia

Bilal ibn Rabah Died: on March 2, 640 AD, in Damascus, Syria

Bilal ibn Rabah's Place of burial: Bab el Saghir Cemetery, Damascus, Syria

while 

Hazrat 'Umar was the first person to suggest the calling of the Azan.

ND2023-2-12