Explanation

• Chromatography mainly works on the principle of adsorption.
• Different substances are adsorbed to different extents on a stationary phase.
• This causes separation of components in a mixture.

Last verified on 05-06-2026

Explanation

• Battery is a device that converts chemical energy into electrical energy.
• Batteries work by using a galvanic cell.
• It is an electrochemical device made up of two electrodes and an electrolyte solution.

Last verified on 16-03-2026

Explanation

• Nicolaus Copernicus is called the Father of Modern Astronomy.
• He introduced the heliocentric theory in 1543.
• This theory stated that the Sun is at the center of the solar system.
• His ideas changed the old belief that Earth is the center.

Additional information:

• Galileo Galilei, a later figure, is often called the "father of observational astronomy".

Last verified on 01-06-2026

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

• The first metal discovered and used by humans was Copper.
• It was found in native form (pure metal) in nature.
• Early humans used it for tools and ornaments before iron age.
• This period is known as the Copper Age (Chalcolithic Age).

Last verified on 30-05-2026

Explanation

• Anemometer is a scientific instrument used to measure wind speed (velocity).
• It is mainly used in meteorology and weather forecasting.
• It helps in studying storms, cyclones, and air pressure changes.
• Common types include cup, vane, and hot-wire anemometers.

Additional Information:

• A hygrometer is an instrument used to measure humidity.
• A salinometer is used to measure the salinity
• A bolometer is used to measure the power of incident electromagnetic radiation
• A barometer is used to measure air pressure in certain environment.

Last verified on 30-05-2026

Explanation

• Species is the basic unit of classification.
• Species are a group of organisms that are morphologically similar and can interbreed.
• Classification system as proposed by Linnaeus.

These groups or levels are:

1. Kingdom
2. Phylum
3. Class
4. Order
5. Family
6. Genus 
7. Species

Species is the smallest unit of classification.

Last verified on 20-05-2026

Explanation

• Nylon 6,6 is a synthetic polyamide polymer.
• It is formed by condensation polymerization.
• Two monomers react to form long polymer chains.
• Nylon 6,6 is formed by condensation of adipic acid (diacid) and hexamethylenediamine (diamine).
• Each monomer contributes 6 carbon atoms (hence 6,6).
• Water is eliminated during the reaction.

Last verified on 19-05-2026

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

• Isotopes of an element have the same number of protons.
• They differ in number of neutrons, which changes mass number.
• Chemical properties remain almost the same due to same protons.

Last verified on 14-05-2026