Explanation

China has installed the world's largest air purifier to battle smog.

The 100-meter tall tower in Xi'an is designed to reduce air pollution by filtering large volumes of polluted air.

Explanation

The best orientation to fit maximum columns on a single sheet for print is Landscape. 

Landscape orientation provides a wider layout.

This making it ideal for printing more columns compared to the narrower Portrait orientation.

Explanation

Captain Esmond D. Cunha was the first non-Muslim to win the coveted Sword of Honour at the Pakistan Military Academy, Kakul.

He achieved this prestigious award in 1951, marking a significant milestone in Pakistan's military history.

Explanation

Prolactin is responsible for the production of milk in the human body.

It stimulates the mammary glands to produce milk, especially after childbirth.

Prolactin works in conjunction with oxytocin, which helps release the milk.

Explanation

Six Ansaar from Madina embraced Islam in the 11th year of Nabvi during the Prophet Muhammad's (PBUH) time.

They were among the first people from Madina to accept Islam and helped pave the way for the spread of Islam in the city.

Hazrat Suwaid bin Samit R.A was the first person from Madina to accept Islam.

Explanation

The first Global Conference on Air Pollution and Health was held at World Health Organisation (WHO) Headquarters in Geneva, Switzerland on October 30, 2018. 

Explanation

Ornithophily is the term used for pollination by birds.

This type of pollination typically involves brightly colored flowers with a lot of nectar to attract bird species.

Explanation

Julius Caesar was a Roman general and politician born on July 12 or 13, 100 B.C.

He declared himself dictator of Rome, but his rule lasted less than a year before his assassination in 44 B.C.

He played a key role in the fall of the Roman Republic and the rise of the Roman Empire.

Explanation

Xinjiang Province or Sinkiang Province was a province of the Republic of China.

First set up as a province in 1884 by the Qing dynasty

They were renamed Xinjiang (新疆) in 1884, meaning "new frontier,"

when both regions were conquered by the Manchu Qing dynasty after the Dungan revolt (1862–1877)

Explanation

Sir Syed Ahmad Khan predicted the widening gulf between Hindus and Muslims after the Urdu-Hindu controversy in UP in 1867.

The controversy arose when Hindus demanded that Hindi replace Urdu as the official language in courts, which deepened religious and cultural divides.