Explanation

Processed food is any food that has been changed from its natural state by methods like canning, freezing, or adding preservatives.

These changes are made for safety, shelf-life, and convenience, such as ready-to-eat meals or packaged snacks

Explanation

T cells identify and destroy virus-infected or abnormal cells directly.

They also activate other immune cells by releasing signaling molecules called cytokines.

Explanation

A force is a vector quantity.

Force is requires both magnitude (strength) and direction to be fully described.

Explanation

In the double-touch method, opposite poles (north and south) of two magnets are rubbed on the material in opposite directions to magnetize it effectively.

This helps align more magnetic domains inside the material.

Explanation

The Hubble Space Telescope is designed specifically for research and observation in space.

It captures images and data about stars, galaxies, and other celestial bodies to support astronomical research.

Explanation

This phenomenon is called persistence of sound or auditory memory.

The human ear retains the sensation of a sound for about 0.1 second (1/10) after the sound stops.

Explanation

A washing machine uses an electric motor to produce mechanical motion for spinning and agitating clothes.

This is a clear example of converting electrical energy into mechanical energy.

Explanation

Enzymes are special types of proteins produced by the body.

They act as catalysts, speeding up chemical reactions in the body without being consumed in the process.

Explanation

When hydrogen sulfide (H2S) reacts with sulfur dioxide (SO2), the reaction produces sulfur (S) and water (H2O).

2H2​S+SO2​→3S+2H2​O

• Reactants: Hydrogen sulfide (H₂S) and Sulfur dioxide (SO₂)

• Products: Elemental Sulfur (S) and Water (H₂O)

  
  

Explanation

When alkalis react with fats, they produce soap and glycerin in a process called saponification.

Glycerin (also called glycerol) is a byproduct formed alongside soap.