Explanation

• The Opium Wars were fought between Britain and China in the 19th century.
• Britain wanted to force China to allow opium trade from India.
• The wars led to unequal treaties and loss of Chinese territory.

Additional information:

• First Opium War: 1839–1842
• Second Opium War: 1856–1860
• Treaty of Nanking ceded Hong Kong to Britain.

Last verified on 03-04-2026

Explanation

• Microsoft Excel is a spreadsheet program used to organize, calculate, and analyze data efficiently.
• It is widely used in offices, schools, and businesses for data management.

Additional information:

• Allows calculations using formulas and functions.
• Can create charts, graphs, and pivot tables for data analysis.
• Supports data sorting, filtering, and visualization.

Last verified on 17-01-2026

Explanation

• The author of Kitab-ul-Hind is Al-Biruni.
• Publisher: Anjuman Taraqqi Urdu (Hind), Delhi.
• Year of Publication: 1941.
• The language of Al-Biruni's 'Kitab-ul-Hind' is Arabic.

Last verified on 02-04-2026

Explanation

• Vitamin A is essential for vision, skin health, and immune function.
• Its deficiency can lead to night blindness and other health problems.

Additional information:

• Dry skin and eyes
• Impaired immune function
• Poor wound healing
• Increased risk of respiratory and urinary tract infections

Last verified on 17-01-2026

Explanation

• Asthma is a chronic respiratory disease affecting the airways of the lungs.
• It causes narrowing and inflammation of the air passages, leading to difficulty in breathing.
• Common symptoms include wheezing, coughing, chest tightness, and shortness of breath.

Last verified on 02-04-2026

Explanation

Explanation

Explanation

• Isaac Newton (1642–1727) was an English physicist and mathematician.
• He formulated the laws of motion and law of universal gravitation.
• His work laid the foundation for classical mechanics.

Last verified on 02-04-2026

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:

• 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.
• The Arctic Ocean is the Smallest Ocean of the world.

Last verified on 17-03-2026

Explanation

• Artist: Leonardo da Vinci (1452–1519)
• Painting Period: 1503–1519
• Origin: Italy
• Current Location: Louvre Museum, Paris, France
• Famous Features: Mysterious smile, sfumato technique, widely copied and recognized globally

Last verified on 18-01-2026