Explanation

• The normal resting heart rate of an adult human is about 70 beats per minute.
• It can vary depending on age, fitness, and health condition.

Additional information:

• Normal adult: 60–100 beats/min
• Athletes: 40–60 beats/min
• Children: 70–120 beats/min
• Infants: 100–160 beats/min

Last verified on 31-03-2026

Explanation

• Geochemistry focuses on the chemical elements and compounds in Earth materials.
• It helps to understand rocks, minerals, and soil composition.

Last verified on 01-04-2026

Explanation

• Jabir ibn Hayyan, known as the "father of chemistry."
• He was an Arab Chemist.
• Composition of Alchemy was written by Jabir Bin Hayyan.

Notable ideas:

• Use of organic substances in chemistry
• Sulfur-mercury theory of metals
• Science of the balance
• Science of artificial generation

Last verified on 07-02-2026

Explanation

• Dermatology: Study of skin.
• It involves the study of health conditions that may affect the skin, fat hair, nails, and membranes.

Additional information:

• Agrostology: Study of Grasses
• Hematology: Study of blood
• Agronomy: Study of soil management and crop production
• Odontology: Study of teeth
• Arthrology: Study of joints
• Nephrology: Study of kidneys

Last verified on 01-04-2026

Explanation

• Violet light has the smallest wavelength, approximately 380-450 nanometers (nm).
• While red light has the longest wavelength, approximately 620-750 nanometers (nm).
• The order of colors in the spectrum, from longest to shortest wavelength, is: Red, Orange, Yellow, Green, Blue, Indigo, Violet (ROYGBIV).

Last verified on 01-04-2026

Explanation

• Total planets: 8
• Inner planets: Mercury, Venus, Earth, Mars (4)
• Outer planets: Jupiter, Saturn, Uranus, Neptune (4)
• Pluto reclassified: 2006 (IAU decision)
• Largest planet: Jupiter
• Smallest planet: Mercury

Last verified on 01-04-2026

Explanation

• The scientific study of different aspects of plants is called botany.
• Plant biology or Phytology, is the science of plant life and a branch of biology.

Additional information:

• Study of soil is called Pedology
• Study of grasses is called Agrostology
• Study of food is called Bromatology
• Study of cells is called Cytology
• Study of animals is called Zoology
• Study of skin is called Dermatology
• Study of insects is called Entomology
• Study of eggs is called Oology
• Study of earthquakes is called Seismology
• Study of viruses is called Virology
• Study of bacteria is called Bacteriology
• Study of the heart is called Cardiology 
• Study of fermentation is called Zymology

Last verified on 31-03-2026

Explanation

• Calcium phosphate, specifically hydroxyapatite, is the main component of bones and teeth.
• It is a calcium salt of phosphoric acid.
• It is the primary mineral constituent of bone tissue, making up about 70-80% of bone dry weight.
• Calcium phosphate gives bones and teeth their strength and rigidity.

Last verified on 31-03-2026

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