Explanation

• Bleaching powder: CaOCl₂
• Chemical name: Calcium oxychloride.
• Main uses: Bleaching and disinfection.
• CaCl₂: Calcium chloride.
• Ca(OH)₂: Calcium hydroxide (slaked lime).

Last verified on 03-09-2026

Explanation

• BCC stands for: Blind Carbon Copy
• Used in: Email communication
• Purpose: Hides recipient email addresses from other recipients

Additional information:

• CC (Carbon Copy): Recipients are visible to all
• BCC: Recipients are hidden from everyone except the sender

Last verified on 16-01-2026

Explanation

• The Pacific Ocean is the largest and deepest ocean on Earth.
• It covers about 30% of the Earth's surface.
• It contains 97% of the Earth's water.
• The Mariana Trench, the deepest part of the ocean.
• It is located in the Pacific.
• The Arctic Ocean is connected to the Pacific Ocean via the Bering Strait.

Additional information:

• The Arctic Ocean is the Smallest Ocean of the world.
• Oceans cover 71% of the Earth's surface.
• The Indian Ocean is the warmest, with the Persian Gulf being the hottest area.
• The Diamantina Trench is the deepest point in the Indian Ocean.
• Jordan does not have an ocean.

Last verified on 17-03-2026

Explanation

• Ismail Ould Cheikh Ahmed is the Current Secretary-General of OIC.
• He is elected for a five-year term starting August 28, 2026.
• He belongs to the Mauritanian.
• 
  
• Last verified on 02-09-2026

Explanation

Pakistan’s borders with neighbors:

• India: 2,100 km (East)
• Afghanistan: 2,611 km (West/Northwest)
• Iran: 909 km (West)

• Arabian Sea coast: 1,058 km (South)
• Total land border: 6,219 km
• Land + Sea border: 7,277 km
• Land + Sea + LOC & Working Boundary: 8,340 km

Explanation

• URL stands for Uniform Resource Locator.
• It is a specific type of Uniform Resource Identifier (URI).
• Domain: World Wide Web
• First published: 1994
• Latest version: Living Standard, 2023

Used:

• Web page (HTTP/HTTPS)
• File transfer (FTP)
• Email (mailto)
• Database access (JDBC)

Last verified on 08-06-2026

Explanation

• Main Cause: Freon / CFCs
• Effect: Breaks down O₃ molecules → more UV-B radiation
• Other Contributors: Halons, carbon tetrachloride
• Result: Skin cancer, cataracts, climate impact

• The Montreal Protocol (1987) aimed to reduce CFC emissions
• Ozone layer protects Earth from harmful ultraviolet rays

Explanation

• The shortcut key to insert a new slide in a PowerPoint presentation is Ctrl + M.

Additional information:

• Ctrl + N shortcut key used to create a new presentation document.
• Ctrl + S shortcut key used to save a presentation.

Last verified on 29-05-2026

Explanation

• Greenland is the world’s largest island.
• It is located between the Arctic and Atlantic Oceans.
• It belongs to the Kingdom of Denmark.
• Population is about 56,000 people only.
• Area: 2.131 million km²
• Maximum width: 1,050 km
• Location: North America region (Arctic area)
• Capital: Nuuk

Last verified on 06-06-2026

Explanation

• SAARC founded: 8 December 1985
• Full Form: South Asian Association for Regional Cooperation
• Headquarters: Kathmandu, Nepal
• Founding place: Dhaka, Bangladesh

SAARC Member Countries:

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

Last verified on 12-06-2026