Explanation

Hazrat Umar ibn al-Khattab was the second caliph of Islam.

He was ruled for 10 years from 634 CE to 644 CE.

He succeeded Hazrat Abu Bakr.

He was instrumental in expanding the Islamic state.

Explanation

El Salvador in 2021 become the first country in the world to officially classify Bitcoin as legal currency.

Additional information:

Bitcoin was invented by Satoshi Nakamoto in 2008

It was initially released: On 9 January 2009

Code: BTC, XBT

White paper: "Bitcoin: A Peer-to-Peer Electronic Cash System"

Symbols: BTC, ฿, ₿

Bitcoin: a virtual currency

Central African Republic became the first African country to legalize the digital currency bitcoin in May 2022

Explanation

Fawad Khan made his Bollywood debut in the film Khoobsurat (2014) alongside Sonam Kapoor.

Khan has also acted in the following films: Kapoor & Sons (2016) and Armaan (2013).

Explanation

Khanki Headworks is a headworks situated on the River Chenab in Gujranwala District 

The construction of this headworks was completed in 1889 

It is also used to divert water to the Lower Chenab Canal

The old "Head Khanki Barrage" was built from 1892 to 1898 on the Chenab River 

Explanation

The mean proportional between two numbers a and b is √(ab).

So, √(2 × 8) = √16 = 4.

Explanation

Brevity means اختصار

Prolixity means پُرگوئی

Explanation

Explanation

"Draught" refers to a current of air, often used to describe a gentle breeze or a flow of air through a room.

In this sentence, "draught" is the correct choice, as it implies that there is a flow of air coming through the window.

Explanation

Benign means مہربان

Kind means مہربان

Explanation

مربہ صحت کے لیے بہت مفید ہے۔