Definitions in Science ( GE-13)

  Session-4    (2025-2026)

GK Event -13

Some Important Definitions in Science 

Q. 1         What is matter?

Ans:-      Matter is anything that has mass and takes up space, forming the physical world around us.

Q.2    What is DNA?

Ans:-     DNA (Deoxy-ribonucleic acid) is a molecule that carries genetic instructions for growth and development.

Q.3         What is the function of mitochondria?

Ans:-     Mitochondria generate energy for cells through cellular respiration.

 Q.4     What is the periodic table?

Ans:     The periodic table is a chart organising elements by atomic number and properties.

Q.5     What is an acid?

Ans:-     An acid is a substance that donates H+ ions, with a pH below 7.

Q.6     What is a chemical bond?

Ans:-  A chemical bond is an attractive force holding atoms together in a molecule.

          

Q.7     What is gravity?

Ans:-     Gravity is a force attracting objects with mass towards each other.

Q.8    What is energy?

Ans:- Energy is the ability to do work, existing in forms like kinetic, potential, and thermal.

Q.9    What is motion?

Ans:-     Motion is an object's change in position over time, described by speed, velocity, and acceleration.

Q.10    What is RNA ? 

Ans:-     RNA (ribonucleic acid) is a molecule that helps decode genetic instructions and make proteins in cells