Explanation

 The Vaal River is the largest tributary of the Orange River in South Africa.

Length 1,458 km (906 mi)

Explanation

The First Mysore War  (1775–1782) was fought between the English East India Company and Haider Ali of Mysore.

It ended with the Treaty of Madras in 1769.

• Second Mysore War (1780–1784): Fought between the English and Haider Ali, later Tipu Sultan; ended with the Treaty of Mangalore.
• Third Mysore War (1790–1792): Fought between Tipu Sultan and the English, ending with the Treaty of Seringapatam.
• Fourth Mysore War (1799): Fought between Tipu Sultan and the British; Tipu Sultan was killed, and Mysore was brought under British control.

Explanation

 The Byzantine Empire, also known as the Eastern Roman Empire

Capital: Constantinople (modern-day Istanbul)

Common languages: Greek

Religion : Christianity (official)

Demonym: Byzantine Roman

Currency: Solidus, denarius, and hyperpyron

Explanation

 The capital of the Xinjiang Uyghur Autonomous Region of China is Ürümqi. 

Capital: Urumqi

Region: Xinjiang Uyghur Autonomous Region

Location: Northwestern China

Other Names: Also known as Urumqi

Explanation

The mango (Mangifera indica) is the national tree of Bangladesh.

Bangladesh Capital is Dhaka.

Bangladesh Currency is Taka.

Bangladesh official language is Bangla.

Bangladesh located is in Continent Asia.

Bangladesh Primary Religion is Islam.

Bangladesh Head of Govt. is Prime Minister – Sheikh Hasina.

Bangladesh Parliament called Jatia Parliament.

Explanation

Mount Everest is the Highest peak in the world.

The highest part of the Earth is Mount Everest.

It is located in Nepal.

The new height of Mount Everest is 8,848.86m (29,032 feet).

Mount Everest was named after George Everest in 1856

First time Mount Everest expedition in 1953

Mount Everest is present in the range of mountains: the Himalayas

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the first person to reach Mount Everest: 

Sherpa Tenzing and Edmund Percival Hillary

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The first man to climb Mount Everest twice was: 

Nawang Gombu

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The first Pakistani woman to scale Mount Everest is:

Samina Baig

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 the first blind man in Asia and the third in the world to climb Mount Everest:

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Explanation

The US is the largest producer of natural gas in the world.

It accounting for 32% of global primary energy consumption.

Russia is the second-largest producer.

The top 10 natural gas producers account for about 73% of total global production:

• 1. United States  
• 2. Russia  
• 3. Iran  
• 4. China  
• 5. Qatar  
• 6. Canada  
• 7. Australia  
• 8. Saudi Arabia  
• 9. Norway  
• 10. Algeria

Explanation

"Ottawa Convention 1997" is related to Banning land mines.

The Ottawa Treaty prohibits the development and production of anti-personnel mines.

It was accepted in Oslo on 18 September 1997.

History:

In October 1996, at the first Ottawa Conference,

• Canadian Minister of Foreign Affairs Lloyd Axworthy launched the Ottawa Process,
• which led to the ratification of the Mine Ban Treaty
• signed by 122 countries
• at the Second Ottawa Conference in December 1997.
  

Explanation

NIKKEI is the Share Price Index of the Tokyo Share Market.

It is also known as Nikkei 225, the Nikkei index.

Nihon Keizai Shinbun newspaper calculating the NIKKEI Index since 1950.

Explanation

• Capital: Kathmandu
• Official Language: Nipali
• Currency: Nepalese Rupee