Explanation

The Steady State theory proposes that the universe has no beginning or end in time.

It suggests that as the universe expands, new matter is continuously created to maintain a constant density.

This theory was proposed by Fred Hoyle, Thomas Gold, and Hermann Bondi in 1948

Explanation

Neptune is the eighth and farthest planet from the Sun in our solar system.

It takes approximately 165 Earth years to complete one orbit around the Sun.

• Neptune: ~165 Earth years
• Uranus: ~84 Earth years
• Saturn: ~29.5 Earth years
• Jupiter: ~12 Earth years
• Mars: ~687 Earth days (1.88 years)
• Earth: 365.25 days
• Venus: ~225 Earth days
• Mercury: ~88 Earth days 

Explanation

Paediatrics is the branch of medicine that deals with the health and medical care of children.

It covers newborns, infants, children, and adolescents.

Explanation

The outermost layer of the Sun is called the corona.

It is the Sun's outer atmosphere, extending millions of kilometers into space and visible during a total solar eclipse.

The innermost layer is the core, where nuclear fusion occurs.

Explanation

A pacemaker is a small device implanted in the chest.

Its main function is to regulate the heartbeat.

Explanation

Maslow's Hierarchy of Needs theory relates primarily to human motivation

It suggests that human needs are arranged in a pyramid from basic to higher-order needs.

The levels include physiological, safety, social, esteem, and self-actualization.

Explanation

• Lactose is a disaccharide made of glucose + galactose.
• Provides energy and helps in calcium absorption.

Additional information:

• Some people have lactose intolerance, meaning they cannot digest lactose properly.
• Found in milk, cheese, and other dairy products.

Last verified on 17-01-2026

Explanation

• Natural gas produces less carbon dioxide, sulfur oxides, and particulate matter.
• It is considered a cleaner fossil fuel.

Additional information:

• Coal is the most pollutant.
• Coal producing high levels of smoke and harmful gases.
• Diesel emits more particulates and nitrogen oxides than petrol.

Last verified on 17-01-2026

Explanation

HP processing of fruit and vegetables mean high pressure.

Additional information:

• Preserves taste, color, and nutrients better than traditional heat methods.
• Used in juices, smoothies, and ready-to-eat foods.
• Also called High-Pressure Processing (HPP).
• It is chemical-free and safe for extending shelf life.

Last verified on 17-01-2026

Explanation

Vitamin B6 is also called Pyridoxine.

Additional information:

• Vitamin B6 helps in amino acid metabolism.
• It supports brain development and immune function.
• Deficiency may cause anemia, skin disorders, and nerve problems.

Last verified on 17-01-2026