Explanation

• Normal blood pressure is 120/80 mmHg.
• High-normal: 130–139 mmHg, High: >140 mmHg.
• mmHg means millimeters of mercury, the unit of pressure.
• Blood pressure is measured using a Sphygmomanometer.
• Maintaining normal BP is essential for heart and overall health.

Last verified on 02-04-2026

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

• 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

• All plants move Anticlockwise around Sun.
• All plants move anticlockwise around their axis.
• Earth rotates its axis from West to East.

Last verified on 15-03-2026

Explanation

• The Moon's surface gravity is about 1/6th as powerful or about 1.6 meters per second.
• The Moon's surface gravity is weaker because it is far less massive than Earth.
• A body's surface gravity is proportional to its mass, but inversely proportional to the square of its radius.

Last verified on 13-03-2026

Explanation

• Pressure can be defined as the force acting per unit area.
• The unit of pressure is N/m² (Newton per square meter).
• It is also called Pascal (Pa).
• In SI base units kg⋅m−1⋅s−2
• Derivations from other quantities: p = F / A
• Dimension unit: M L^−1 T^-2.

Additional information 

The SI unit of energy/work is the joule (J)

Last updated on 09-03-2026

Explanation

• Sound waves are mechanical waves and need a medium to travel.
  • They travel fastest in solids, slower in liquids, and slowest in gases.
  • Solid particles are closely packed, allowing rapid vibration transfer.

Last verified on 04-02-2026

Explanation

• The study of tissues is called Histology.
• It involves examining the structure, composition, and function of cells and tissues under a microscope.
  

Additional information:

• Geology is the study of rocks and Earth's structure.
• Radiology is the study of medical imaging techniques like X-rays and MRI.

Last verified on 22-01-2026

Explanation

• Scientist: Edward Jenner
  • Discovery Year: 1796
  • Vaccine Type: Smallpox
  • Significance: First ever successful preventive vaccine
  • Extra Fact: Smallpox was declared eradicated in 1980 by WHO

Additional information:

• Edward Jenner is often called the “Father of Immunology.”

Last verified on 16-01-2026

Explanation

Colour of the plants is green due to the presence of Chlorophyll۔

Chlorophyll absorbs certain wavelengths of light within the visible light spectrum.

Chlorophyll is the green color pigment which absorbs wavelength from sunlight.

Since the synthesis of food occurs in the presence of sunlight, it is called photosynthesis.