Explanation

• A Barometer is an instrument used to measure air (atmospheric) pressure.
• It helps in weather forecasting by measuring changes in atmospheric pressure.
• The mercury barometer is the oldest type of barometer.
• It was invented by Evangelista Torricelli in 1643.
• Barometers are widely used in meteorology and aviation.

Last verified on 09-07-2026

Explanation

• OCR stands for Optical Character Recognition
• OCR converts text in scanned documents or images into machine-readable text.
• It is used to digitize printed books and documents.

Explanation

• Bravery means بہادری
• Boldness means دلیری

Last verified on 12-10-2026

Explanation

• SAARC was founded in Dhaka on December 8, 1985
• SAARC stands for the South Asian Association for Regional Cooperation
• Founded by Bangladeshi diplomat Abul Ahsan
• Launched for Regional cooperation
• Headquarters: Kathmandu

Additional information

SAARC cooperation has given observer status to 9 states:

1. Australia,
2. China,
3. the European Union,
4. Iran,
5. Japan,
6. Mauritius,
7. Myanmar,
8. South Korea
9. and the United States

There is a total of eight members of SAARC;

1. Afghanistan,
2. Bangladesh,
3. Bhutan,
4. India,
5. Nepal,
6. the Maldives,
7. Pakistan
8. and Sri Lanka

Last question by NA on 09 July 2026

Explanation

• Full Name: Amina bint Wahb
• Tribe: Banu Zuhrah
• Main Tribe: Quraysh
• Father: Wahb ibn Abd Manaf
• Mother: Barrah bint Abd al-Uzza
• Husband: Hazrat Abdullah ibn Abdul Muttalib
• Son: Prophet Muhammad (SAW)
• Death: Around 577 CE, at Al-Abwa, while returning from Madinah.
• Burial Place: Al-Abwa, between Makkah and Madinah.

Explanation

• WBCs survive for about 13–20 days, depending on the type.
• WBCs are also called Leukocytes.
• They protect the body against infections.
• They are produced in the bone marrow.

Important Note: The 13–20 days lifespan is not applicable to all WBCs; their lifespan varies according to type.

Explanation

• The United States is the world's largest crude oil-producing country.

Additional information:

• United States – 18.60 million barrels/day (mb/d)
• Saudi Arabia – 11.01 mb/d
• Russia – 10.50 mb/d
• Canada – 5.29 mb/d
• Iraq – 4–5 mb/d

Last updated 25-07-2026 by NA

Explanation

• The Durand Line was drawn in 1893.
• It was established as the official border between British India and Afghanistan.
• British representative: Sir Mortimer Durand
• Afghan ruler: Amir Abdur Rahman Khan
• It later became the international border between Pakistan and Afghanistan.
• Length: Around 2,640 km

Last verified on 09-06-2026

Explanation

Qatar Capital is Doha.

Qatar Currency is Qatari Riyal.

Qatar official language is Arabic.

Qatar located is in Continent Asia.

Qatar Primary Religion is Islam.

Last verified on 23-08-2026

Explanation

• Ibn Battuta belonged to Morocco.
• He was a famous Muslim traveler who visited India during the reign of Muhammad bin Tughlaq.

Additional information:

• Full Name: Abu Abdullah Muhammad ibn Battutah.
• Born: February 24, 1304, in Tangier, Morocco.
• Died: 1369, in Marrakesh, Morocco.
• He served at the court of Muhammad bin Tughlaq in Delhi after reaching India.

Last verified on 23-98-2026