Explanation

The velocity of sound in air at sea level under standard conditions (around 15°C or 59°F) is approximately 343 meters per second (m/s)

The speeds of sound in different materials:

• Air: 343 m/s
• Water: 1433 m/s
• Wood: 3300-3600 m/s
• Brick: 4176 m/s
• Steel: 6100 m/s
• Diamond: 12000 m/s

Explanation

In 2022, Beijing became the first city to hold both the Summer and the Winter Olympic Games

In a 44 to 40 vote, Beijing won the 2022 Winter Olympic Games bid over Almaty Kazakhstan

This makes the Beijing capital the first city to host both Olympic games

Bing Dwen Dwen, a panda was revealed as a mascot for Beijing Winter Olympics 2022.

Additional information:

The Olympics is an international multi-sporting event

It is held once every four year

Blue, yellow, black, green, and red are the order of the colors of the Olympic logo rings.

It represents five continents: 

• Asia
• Africa
• America
• Australia
• Europe

Explanation

The conqueror conquest of Khyber was Hazrat Ali

Hazrat Ali killed Marhab while conquering the Qamus fort.

The Battle of Khaybar was fought in 628 CE (7Hijri)

Between the early Muslims led by Muhammad and Jews living in Khaybar.

93 Jews were killed 

15 Muslims got martyrdom 

3 caliphs were martyred due to the lake of water

The Battle of Khaybar Result: Muslim victory

Explanation

NATO full form: North Atlantic Treaty Organization

Founded: 4 April, 1949 (Washington, USA)

Headquarters: Brussels, Belgium

Total members: 32 (29 European & 2 North American countries)

Latest Member: Sweden

Type: Military Alliance

Official Languages: English & French

Founding members: 12

Pakistan: Not a NATO member

Member Muslim country: Turkiye  

 List of NATO member countries

1.       Albania

2.       Belgium

3.       Bulgaria

4.       Canada

5.       Croatia

6.       Czechia

7.       Denmark

8.       Estonia

9.       France

10.   Germany

11.   Greece

12.   Hungary

13.   Iceland

14.   Italy

15.   Latvia

16.   Lithuania

17.   Luxembourg

18.   Montenegro

19.   Netherlands

20.   North Macedonia

21.   Norway

22.   Poland

23.   Portugal

24.   Romania

25.   Slovakia

26.   Slovenia

27.   Spain

28.   Turkiye

29.   United Kingdom

30.   United States

31.   Finland

32. Swedon 

Explanation

The Winter Olympics 2022 game was held in China

91 countries are participating in the 2022 Winter Olympics

China nabbed its first gold medal on February 5, 2022, at Beijing Olympics 2022.

The 2022 Winter Olympics is an ongoing international winter multi-sport event 

Explanation

Explanation

The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium.

Explanation

Respect all religions, this is solution of bad blood between different religions.

Explanation

At one's beck and call: always having to be ready to obey someone's orders immediately.