Explanation

• Spider legs = 8 total
• Arrangement = 4 pairs
• Insects (like ants, bees) have only 3 pairs (6 legs)

 Last updated NA 12-04-2026

Explanation

• A simple microscope is used to magnify small objects.
• It works by bending light to produce a larger image.
• Only a converging lens can produce a magnified virtual image.
• A convex lens has this property.
• Therefore, simple microscopes use a convex lens.

Last verified on 12-04-2026

Explanation

• Meteorology is the scientific study of the atmosphere, especially weather and climate.
• It involves forecasting and understanding atmospheric phenomena.
• Meteorology is a branch of the atmospheric sciences.
• Metrology is the scientific study of measurement.

Last verified on 03-04-2026

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

• Oncology is a branch of medicine that deals with the study, treatment, diagnosis, and prevention of cancer.
• A medical professional who practices oncology is an oncologist.
• The name's etymological origin is the Greek word ὄγκος, meaning "tumor", "volume" or "mass".

Last verified on 03-04-2026

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

• Glass and pitch are examples of pseudo solids.
• Pseudo solid is a solid which possesses the property of liquids.
• Glass is a pseudo solid and in a very slow process, it flows like a liquid due to which the base of glass gets thicker than top.

Last verified on 02-04-2026

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

• 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

• 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