Explanation

• First World population day was celebrated in 1987.
• World population day is observed on July 11.

Additional information:

• Theme 2024: Leave no one behind, count everyone
• Theme 2025: Empowering young people to create the families they want in a fair and hopeful world.

Last verified on 01-02-2026

Explanation

Major Kharif Crops

1. Rice
2. Sugarcane
3. Cotton
4. Maize
5. Bajra
6. Jowar

• Start: April – June
• End: September – October

• Sowing: October – December
• Harvesting: March – May

Last verified on 27-01-2026

Explanation

• Metals allow electricity to pass through them easily.
• Among all metals, silver has the highest electrical conductivity.
• Copper and gold are also very good conductors.
• Silver is widely used in high-precision electrical applications.
• Copper is commonly used in wiring due to cost-effectiveness.

Last verified on 16-05-2026

Explanation

• Vitamin A deficiency → Night blindness (Nyctalopia)
• Vitamin A is important for vision and immune function.

Additional information:

• Vitamin K is essential for blood clotting.
• Vitamin D helps in calcium absorption and bone mineralization.
• Vitamin B1 supports nerve function and energy metabolism.

Last verified on 01-02-2026

Explanation

• The Treaty of Versailles was a peace treaty signed on 28 June 1919.
• Exactly five years after the assassination of Archduke Franz Ferdinand
• Ended  World War I Between Germany and the Allied Powers.
• Location: Hall of Mirrors in the Palace of Versailles, France
• Effective: 10 January 1920
• Languages: French and English

Last updated by NA on 27 April 2026

Explanation

• Pomology is the branch of horticulture that deals with the study, cultivation, and production of fruits.
• Includes fruit breeding, harvesting, storage, and marketing.
• Examples of fruits studied: apple, mango, citrus, banana, grapes.

Last verified on 31-01-2026

Explanation

• Nocturnal insects are active at night.
• Examples include moths, crickets, and many beetles.

Additional information:

• Diurnal insects: Active during the day (e.g., butterflies, bees)
• Crepuscular insects: Active at dawn and dusk (e.g., mosquitoes, some moths)

Last verified on 25-01-2026

Explanation

• Microbiologists study microorganisms using specific media that provide nutrients for growth.
• Agar is widely used because it is solid at room temperature and supports the growth of many bacteria.

Additional information:

• Agar is derived from red algae.
• It was first used in 1882 by Fannie Hesse for culturing bacteria.

Last verified on 01-02-2026

Explanation

• A trade surplus occurs when a country exports more goods than it imports.
• It indicates that a nation is earning more from exports than it is spending on imports.
• Trade surplus strengthens a country’s economy and foreign reserves.

Last verified on 01-02-2026

Explanation

• Gram blight is a fungal disease affecting gram (chickpea) plants.
• Caused by Ascochyta rabiei (Ascochyta blight).
• Leads to leaf spots, stem lesions, and pod damage, reducing yield.
• Occurs mainly in cool and wet climates.
• Managed by resistant varieties, crop rotation, and fungicides.

Last verified on 22-01-2026