Explanation

• Seismology is the study of earthquakes and seismic waves that move through and around the Earth.
• A seismologist is a scientist who studies earthquakes and seismic waves.

Last verified on 03-04-2026

Explanation

• Myopia (Nearsightedness) is an eye defect in which near objects are clear but distant objects appear blurred.
• It occurs when the image forms in front of the retina instead of on it.
• It is corrected by using a concave (diverging) lens.
• The concave lens helps to shift the image back onto the retina.

Last verified on 01-04-2026

Explanation

Uranus is the planet in our solar system that rotates on its side

• Rotates on its side (axial tilt ~98°), appearing to spin sideways
• 7th planet from the Sun
• 3rd-largest planet in the solar system
• Very cold and windy
• Has faint rings and more than two dozen small moons

Last updated by NS on 06-09-2026​

Explanation

• Red blood cells lack a nucleus to maximize space for hemoglobin, which carries oxygen.
• More hemoglobin means more oxygen transport.
• This makes RBCs highly efficient for gas exchange.
• Lack of nucleus also gives them a flexible shape.
• This helps them pass through narrow blood capillaries.

Last verified on 14-06-2026

Explanation

To convert Celsius to Kelvin, use: K = °C + 273

• Given temperature = 37°C
• 37 + 273 = 310 K

Additional information:

• 0°C = 273 K
• 100°C = 373 K

Last verified on 06-09-2026

Explanation

• The spinal cord is not part of the brain; it is part of the central nervous system (CNS).
• The brain is broadly divided into forebrain, midbrain, and hindbrain.
• Pons and medulla oblongata are parts of the brainstem.
• The hindbrain includes the pons, medulla oblongata, and cerebellum.

Last verified on 06-09-2026

Explanation

• Blood is red because of a protein called hemoglobin inside our red blood cells,
• Which contains iron that changes color when it binds to oxygen

Last updated by NS on 5-09-2026

Explanation

• Pressure cookers cook food faster due to Gay-Lussac’s Law.
• This law states that pressure increases when temperature increases in a closed container.
• In a pressure cooker, steam is trapped, increasing pressure.
• Higher pressure raises the boiling point of water above 100°C.
• Food cooks at a higher temperature, so it cooks faster.

Last verified on 14-06-2026

Explanation

• The lungs exchange gases — they absorb oxygen (O₂) and release carbon dioxide (CO₂).
• This process is essential for respiration and energy production in the body.

Last verified on 05-09-2026

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