Explanation

Perihelion is the point in a comet’s orbit closest to the Sun.

According to Kepler’s Second Law, a comet moves faster when closer to the Sun.

Aphelion is the farthest point from the Sun, where speed is minimum.

The increase in speed is due to Sun’s gravitational pull.

This principle applies to all celestial bodies in elliptical orbits.

Explanation

A cell is the basic structural and functional unit of life.

All plant and animal tissues are made up of cells.

Nitrogen, phosphorus, and oxygen are elements, not units of tissue.

Explanation

• Mono cropping is the practice of cultivating the same crop repeatedly on the same field.
• Common in regions where a single crop is highly profitable.

Additional information:

• Mono cropping may require higher fertilizer and pesticide use.
• Crop rotation is the recommended alternative to maintain soil health.

Last verified on 25-01-2026

Explanation

CPEC Phase-II is also called CPEC 2.0.

It focuses on industrialization and Special Economic Zones (SEZs).

Sectoral Focus: The focus has shifted toward industry, agriculture, mining, and IT.

Explanation

The 25th SCO Summit took place from 31 August to 1 September 2025.

It was hosted by China in the city of Tianjin.

It was the largest summit in SCO's history,

It was the fifth time that China hosted the meeting.

Explanation

• The seed coat protects the embryo inside the seed.
• The outermost layer of the seed coat is called Testa.
• It acts as a barrier against mechanical damage, pathogens, and water loss.

Additional information:

• Testa may have hair, wax, or spines in some seeds.
• Plays a role in seed dormancy and protection.

Last verified on 25-01-2026

Explanation

 Hahn is involved in the German project aimed at developing an atomic bomb.

History:

On December 21, 1938, German scientists Otto Hahn and Fritz Strassmann split uranium atoms

and were surprised to find several lighter products, including barium-141, instead of the heavy elements they had anticipated.

Additional information:

J. Robert Oppenheimer was called the "father of the atomic bomb".

Explanation

• Short key use for Date and Time 
• Date: Ctrl+;
• Time: Ctrl+ Shift+ ;

Additional information

shortcut key in  MS Excell:

Which key is used to help in MS Excel?

F1

***

Shift+Backspace

**

Which key is used to enter the current date in Excel?

 Ctrl+;

Explanation

• HEIS refers to irrigation systems that maximize water use efficiency.
• Drip and sprinkler systems deliver water directly to the root zone.

Additional information:

• HEIS improves crop yield due to precise water and nutrient application.
• Helps in conserving water in water-scarce regions.

Last verified on 25-01-2026

Explanation

• Hydroponics is a soilless cultivation system where plants grow in nutrient-rich water.
• Water and fertilizers are supplied directly to roots.

Additional information:

• Hydroponics reduces soil-borne diseases.
• Can be set up indoors or in areas with poor soil.

Last verified on 25-01-2026