Explanation

Greenwich is an area in south-east London, England

It lies on the south bank of the River Thames in the historic county of Kent.

It is famous for the Prime Meridian (0° longitude).

It is used as the reference for Greenwich Mean Time (GMT).

Greenwich is famous for calculating the time for all countries.

The Greenwich meridian, also known as the prime meridian, passes through the following countries:

• England
• France
• Spain
• Algeria
• Mali
• Burkina Faso
• Togo
• Ghana 
• Antarctica

Explanation

Greenwich main time is 5 hours behind Pakistan standard time.

Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London, counted from midnight.

Greenwich Mean Time was established in 1884

Explanation

The percentage of Punjabi-speaking people in Pakistan is 39%.

List of other Languages:

Sindhi speaking in Pakistan: 15%

Pashto speaking in Pakistan: 18%

Urdu in speaking Pakistan: 8%

Balochi speaking in Pakistan: 3%

Explanation

Explanation

 Shukria Khanum died of cancer in 2017 at the age of 82 in Lahore.

Explanation

Ibn Khaldūn was born on May 27, 1332 in Tunisia.

He died on March 17, 1406, in Cairo, Egypt.

He was an Arab sociologist, philosopher, and historian.

He was  the father of historiography, sociology, economics, and demography studies.

His best-known book, the Muqaddimah or Prolegomena ("Introduction".

Explanation

We can measure our blood pressure on our own using a digital blood pressure monitor for automated readings or an instrument called a sphygmomanometer for manual readings.

A sphygmomanometer also known as a blood pressure monitor, is a device used to measure blood pressure.

Explanation

Bauxite is the most important ore of aluminum which contains only 30–54% alumina.

The rest is a mixture of silica, various iron oxides,

and titanium dioxide along with trace amounts of zinc, phosphorous, nickel, vanadium etc.

Explanation

Ceylon was changed into Sri Lanka on 22 May 1972.

Sri Lanka: Asian island nation

Explanation