Explanation

• The cheapest source of electricity generation is Solar Energy.
• Solar energy uses sunlight, which is free and renewable.
• Costs have dropped significantly due to modern solar panel technology.
• It avoids fuel costs and environmental pollution.

Last verified on 31-03-2026

Explanation

• Diseases can be caused by bacteria, viruses, or other pathogens.
• Flu (Influenza) and Jaundice (Hepatitis A, B, or C) are caused by viruses.
• Typhoid and Cholera are caused by bacteria.
• Therefore, Typhoid and Cholera are not viral diseases.

Last verified on 31-03-2026

Explanation

• Jupiter's diameter is about 11 times the diameter of Earth.
• Jupiter is the largest planet in our solar system.

Last verified on 30-03-2026

Explanation

• The freezing point of heavy water is 3.82°C:
• Heavy water (D2O) Regular water
• Freezing point 3.82°C 0°C |
• Boiling point 101.42°C 100°C | 
• Heavy water is made up of two deuterium atoms and one oxygen atom.
• It contains more deuterium, a hydrogen isotope, than regular water, which contains hydrogen-1.
• Heavy water is used in reaction mechanisms.
• It is is prepared by electrolyzing water.

Last verified on 30-03-2026

Explanation

Saturn is the second-largest planet in the solar system.

Ganymede (Moon of Jupiter) is the largest satellite in the solar system.

Planets and Natural Satellites:

• Mercury: 0
• Venus: 0
• Earth: 1 (Moon)
• Mars: 2 (Deimos, Phobos)
• Jupiter: 95
• Saturn: 274
• Uranus: 27

Last verified on 30-03-2026

Explanation

• Guava is rich in Vitamin C.
• Contains more Vitamin C than oranges per 100 g.
• Strengthens immunity and skin health.
• Helps in iron absorption and antioxidant protection.

Last verified on 30-03-2026

Explanation

Samuel Hahnemann

• Birth: 1755
• Death: 1843
• Country: Germany
• Principle: “Similia similibus curentur” (like cures like)
• Famous work: Organon of Medicine

Last verified on 30-03-2026

Explanation

• Law of Inertia = Newton’s First Law of Motion.
• States: “An object at rest stays at rest, and an object in motion continues in the same direction and speed unless acted upon by an unbalanced force.”
• Explains why seat belts are important in cars.
• Applies to all objects on Earth and in space.

Last verified on 13-03-2026

Explanation

• An aqueous solution is one where water acts as the solvent, dissolving the solute.
• This type of solution is common in many chemical reactions and biological processes.

Last verified on 06-03-2026

Explanation

The total percentage of silicon in the Earth's crust is approximately 27.7% by weight.

Additional information

Abundance: Second most abundant by weight (~ 28%) and volume (0.9%).

Occurrence: It does not exist in pure form in nature, but rather as oxides (e.g., sand, quartz) and silicates (e.g., feldspar, mica, clay).

Last updated 14-feb-2026