Explanation

• Hajr-e-Aswad, or the Black Stone, is located in the eastern corner of the Kaaba in the Grand Mosque in Mecca, Saudi Arabia.
• The Black Stone is a revered Islamic relic believed to have been set into the Kaaba by the Prophet Muhammad (SAW) in 605 CE, five years before his first revelation.

Explanation

Explanation

Hazrat Yousaf (AS) and Hazrat Yaqoob (AS) met each other after a period of 40 years

Hazrat Yousaf (AS) was put into the jail by the king of Egypt. He remained behind the bars for  5 years

Hazrat Yousaf (AS) remained in the well for 3 DAYS 

Yaqub was also known as Israel.

Prophet Yusuf (AS) was the son of Prophet Ya'qub (AS). 

The Holy Qur'an has mentioned his story in a beautiful chapter entitled "Surah Yusuf".

Prophet Yusuf (AS) had 11 brothers.

Explanation

• Lord Lytton, who was the Governor-General of India from 1876 to 1880, followed a spirited "Forward" policy towards Afghanistan.
• He believed that the British should pursue an aggressive policy towards Afghanistan, which led to the Second Anglo-Afghan War.
• Lytton was appointed by Conservative Prime Minister Benjamin Disraeli and purportedly feared the spread of Russian influence in Central Asia.

Explanation

Explanation

• Speleology is the scientific study and exploration of caves.
• The word comes from the Greek words "spelaion", meaning "cave", and "-logy", meaning "study" or "science".

Explanation

• Vitamin D serves as a hormone precursor, as it is converted into a hormone in the body.
• Cholesterol also serves as a precursor of vitamin D and steroid hormones.

Explanation

COBOL stands for Common Business-Oriented Language

It is a programming language specifically designed for business, finance, and administrative systems.

It was designed in 1959 by CODASYL

And was partly based on the programming language FLOW-MATIC

Designed by Grace Hopper

Stable release: ISO/IEC 1989:2023 / 2023

Explanation

Copper, silver, aluminum, gold, steel, and brass are common conductors of electricity.

The most highly conductive metals are silver, copper, and gold

Silver is the first-best conductor of heat.

Copper is the second-best conductor of heat.

Explanation

A Realtime operating system (RTOS) is designed to respond immediately to external events.

It is used in systems like aircraft controls, medical devices, and industrial machines, where delays can be critical.